Inconel 718 suppliers provide one of the most widely used precipitation-hardenable nickel alloy materials for high-temperature, high-strength, corrosion-resistant, and critical engineering applications. Inconel 718, also known as Alloy 718, UNS N07718, and W.Nr. 2.4668, is commonly supplied as bar, plate, sheet, pipe, tube, wire, forging, ring, fastener stock, and custom machined material. Buyers from aerospace, oil and gas, marine, power generation, chemical processing, and high-performance machinery industries choose Inconel 718 because it offers high strength, good oxidation resistance, good corrosion resistance, excellent weldability compared with many superalloys, and useful mechanical performance from cryogenic temperatures to elevated temperatures. This article explains Inconel 718 alloy overview, grade identification, chemical composition, key properties, supply range, available sizes, heat treatment, mechanical properties, standards, inspection requirements, applications, price factors, stock availability, lead time, and how to choose reliable Inconel 718 suppliers.
Inconel 718 Suppliers for High-Temperature Nickel Alloy Materials
Inconel 718 suppliers are important for industries that need nickel alloy materials with reliable strength, corrosion resistance, heat resistance, and full traceability. Unlike ordinary stainless steel or general nickel alloy supply, Inconel 718 often requires controlled heat treatment, mechanical testing, chemical verification, ultrasonic testing, PMI inspection, and material test certificates.
For many projects, buyers do not only need a material called “Inconel 718.” They need the correct grade, correct product form, correct standard, correct heat treatment condition, correct mechanical properties, correct size tolerance, and correct certificate. A professional supplier should help buyers confirm whether the material should be supplied as solution annealed, age hardened, hot rolled, forged, peeled, ground, pickled, or custom processed.
What Good Inconel 718 Suppliers Should Provide
| Supplier Capability | What It Means | Why It Matters to Buyers |
|---|---|---|
| Grade confirmation | Inconel 718 / Alloy 718 / UNS N07718 / W.Nr. 2.4668 | Prevents material mismatch and wrong alloy supply. |
| Multiple product forms | Bar, plate, sheet, pipe, tube, wire, forging, ring | Supports different engineering and machining requirements. |
| Heat treatment support | Solution annealed, aged, solution treated and aged | Mechanical properties depend strongly on final condition. |
| Testing and inspection | MTC, PMI, tensile test, hardness, UT, dimension inspection | Ensures quality and project compliance. |
| Custom cutting | Cut-to-length bar, cut plate, machined blank | Reduces buyer preparation and machining work. |
| Export packing | Wooden case, pallet, anti-rust protection, clear marking | Protects high-value nickel alloy during international shipment. |
Inconel 718 Alloy Overview
Inconel 718 is a nickel-chromium-iron-niobium-molybdenum alloy that can be strengthened by precipitation hardening. It is one of the most important nickel-based superalloys in modern engineering because it combines high strength, good corrosion resistance, high-temperature performance, and relatively good weldability.
The alloy is widely used in aerospace engine parts, gas turbine components, oil and gas downhole tools, marine hardware, power generation equipment, high-strength fasteners, springs, shafts, rings, pressure parts, and cryogenic components. Its broad application range makes it one of the most commonly requested nickel alloy grades from global suppliers.
Why Inconel 718 Is Popular
Many high-strength nickel alloys are difficult to weld or fabricate. Inconel 718 is valued because it has good weldability compared with many precipitation-hardenable superalloys. Its strengthening response is relatively slow during welding, which helps reduce post-weld cracking risk. This is one reason it is used not only for forged and machined parts, but also for welded assemblies and fabricated components.
Main Performance Features
| Feature | Performance Meaning | Typical Buyer Benefit |
|---|---|---|
| High strength | Strengthened by niobium, titanium, and aluminum precipitation phases. | Suitable for fasteners, shafts, rings, turbine parts, and high-load components. |
| High-temperature capability | Maintains useful strength at elevated temperatures. | Used in aerospace, turbines, and power equipment. |
| Corrosion resistance | Nickel-chromium base resists many corrosive environments. | Suitable for oil and gas, marine, and chemical applications. |
| Oxidation resistance | Chromium helps resist oxidation and scaling at elevated temperatures. | Useful for hot gas and engine service. |
| Good weldability | More weldable than many age-hardenable superalloys. | Supports fabricated parts and repair welding with proper procedures. |
| Cryogenic performance | Useful strength and toughness at very low temperatures. | Suitable for cryogenic and low-temperature engineering components. |
Inconel 718 UNS N07718 / W.Nr. 2.4668 Grade Identification
Inconel 718 is known by several names and designations. Buyers should confirm these names clearly when sending inquiries, because different suppliers and countries may use different naming systems.
Common Inconel 718 Names
| Name / Designation | Meaning | Where It Is Commonly Used |
|---|---|---|
| Inconel 718 | Common trade name | Buyer inquiries, supplier websites, product catalogs. |
| Alloy 718 | Generic commercial name | Used when avoiding trademark-specific wording. |
| UNS N07718 | Unified Numbering System designation | International procurement and material certificates. |
| W.Nr. 2.4668 | German material number | European drawings and specifications. |
| NiCr19Fe19Nb5Mo3 | EN-style alloy description | Technical material references and European documents. |
| NC19FeNb | Alternative designation | May appear in some regional material cross-reference tables. |
Why Grade Identification Matters
Inconel 718 should not be confused with Inconel 625, Inconel 600, Inconel X-750, or Alloy 725. These are all nickel alloys, but their composition, strengthening mechanism, heat treatment, mechanical properties, and applications are different. If a drawing specifies UNS N07718 or W.Nr. 2.4668, the supplier should supply Alloy 718 material that matches the required standard and certificate.
Chemical Composition of Inconel 718
The chemical composition of Inconel 718 is carefully controlled because its strength, corrosion resistance, heat treatment response, and weldability depend on the balance of nickel, chromium, iron, niobium, molybdenum, titanium, aluminum, and controlled minor elements.
Typical Chemical Composition Table
| Element | Typical Range | Function in Inconel 718 |
|---|---|---|
| Nickel + Cobalt (Ni + Co) | 50.00% – 55.00% | Provides the nickel base matrix, high-temperature stability, and corrosion resistance. |
| Chromium (Cr) | 17.00% – 21.00% | Improves oxidation resistance and corrosion resistance. |
| Iron (Fe) | Balance | Major balancing element in the alloy system. |
| Niobium + Tantalum (Nb + Ta) | 4.75% – 5.50% | Main strengthening element for precipitation hardening. |
| Molybdenum (Mo) | 2.80% – 3.30% | Improves strength and resistance to localized corrosion. |
| Titanium (Ti) | 0.65% – 1.15% | Supports precipitation hardening and mechanical strength. |
| Aluminum (Al) | 0.20% – 0.80% | Works with titanium and niobium in strengthening phases. |
| Cobalt (Co) | Max. 1.00% | Usually controlled as part of nickel plus cobalt content. |
| Manganese (Mn) | Max. 0.35% | Controlled minor element. |
| Silicon (Si) | Max. 0.35% | Controlled to maintain material quality. |
| Copper (Cu) | Max. 0.30% | Controlled residual element. |
| Carbon (C) | Max. 0.08% | Affects carbide formation and mechanical behavior. |
| Sulfur (S) | Max. 0.015% | Kept low to improve hot workability and quality. |
| Phosphorus (P) | Max. 0.015% | Controlled impurity element. |
| Boron (B) | Max. 0.006% | Controlled minor element that can affect grain boundary behavior. |
Why Niobium Is Important in Inconel 718
Niobium is one of the most important strengthening elements in Inconel 718. Together with titanium and aluminum, it allows the alloy to develop high strength after proper aging treatment. This is one reason Inconel 718 can be supplied in different heat treatment conditions and used for high-strength fasteners, rings, shafts, turbine parts, and oilfield components.
Why Chemical Composition Must Be Verified
A reliable Inconel 718 supplier should provide a material test certificate showing the heat number and chemical composition. For critical applications, buyers may also request PMI testing before shipment. Correct chemistry is the foundation of proper heat treatment response and final mechanical performance.
Key Properties of Inconel 718 Supplied Materials
Inconel 718 supplied materials are chosen for a combination of high strength, heat resistance, corrosion resistance, oxidation resistance, weldability, and good performance in both cryogenic and elevated-temperature environments.
Key Property Summary
| Property | Inconel 718 Performance | Typical Application Value |
|---|---|---|
| High tensile strength | Excellent after solution treatment and aging. | Used for fasteners, shafts, springs, and aerospace hardware. |
| Yield strength | High load-bearing capacity after age hardening. | Important for structural and pressure-related components. |
| Elevated-temperature strength | Maintains useful strength up to high service temperatures. | Suitable for turbine and hot-section support parts. |
| Creep resistance | Good in suitable temperature ranges. | Useful for long-term high-temperature load. |
| Corrosion resistance | Good resistance in many industrial, oilfield, and marine environments. | Supports oil and gas, marine, and chemical equipment use. |
| Oxidation resistance | Good resistance to high-temperature oxidation. | Useful for hot gas and engine environments. |
| Weldability | Better weldability than many precipitation-hardened superalloys. | Useful for fabricated and repaired components. |
| Cryogenic performance | Maintains useful properties at very low temperatures. | Suitable for cryogenic and aerospace applications. |
Strength and Weldability Balance
The balance of strength and weldability is one of the main reasons Inconel 718 remains popular. Some superalloys may offer higher temperature capability, but they can be more difficult to weld, fabricate, or source. Inconel 718 provides a practical combination of strong mechanical performance, processability, and global availability.
Inconel 718 Bar, Plate, Sheet, Pipe, Wire, and Forging Supply Range
Inconel 718 suppliers usually provide multiple product forms to meet different project requirements. The correct product form depends on the final component, manufacturing process, machining allowance, strength requirement, and inspection standard.
Main Product Forms
| Product Form | Common Supply Condition | Typical Applications |
|---|---|---|
| Inconel 718 Bar / Rod | Hot rolled, forged, solution treated, aged, peeled, ground | Fasteners, shafts, pins, springs, machined parts, oilfield tools. |
| Inconel 718 Plate | Hot rolled, annealed, solution treated, cut plate | Structural parts, machined plates, aerospace and power components. |
| Inconel 718 Sheet | Cold rolled, annealed, pickled, polished | Formed components, aerospace sheet parts, high-strength fabrications. |
| Inconel 718 Pipe / Tube | Seamless or welded, annealed or solution treated | Oil and gas, chemical processing, pressure systems, high-strength tubing. |
| Inconel 718 Wire | Cold drawn, spring temper, welding wire, straight wire | Springs, fasteners, mesh, welding filler, precision parts. |
| Inconel 718 Forging | Forged bar, ring, disc, block, custom forging | Turbine parts, rings, discs, shafts, pressure components. |
| Inconel 718 Fastener Stock | Aged bar, wire, or heading stock | Bolts, nuts, studs, washers, aerospace and oilfield fasteners. |
Custom Supply Support
Many projects require more than standard mill sizes. Inconel 718 suppliers may support cutting, peeling, grinding, heat treatment, forging, machining blanks, ring rolling, and custom packaging. For accurate quotation, buyers should provide drawings or detailed size requirements before purchase.
Available Sizes, Dimensions, and Custom Cutting Options
Inconel 718 is available in many sizes, but exact stock depends on product form, market inventory, mill schedule, and required standard. Common stock items may include round bars, plates, sheets, tubes, wires, and forged blanks. Custom sizes may require production or machining.
Common Size Information
| Product Form | Common Size Information Needed | Custom Options |
|---|---|---|
| Round Bar | Diameter, length, tolerance, surface condition | Cut-to-length, peeled, ground, forged, aged. |
| Plate | Thickness, width, length, flatness | Saw cutting, waterjet cutting, machined blanks. |
| Sheet | Thickness, width, length, surface finish | Shearing, laser cutting, polishing, protective film. |
| Pipe / Tube | OD, wall thickness, length, seamless or welded type | Cut pieces, special wall thickness, testing, end protection. |
| Wire | Diameter, coil weight, temper, surface condition | Straightened wire, cut wire, spring wire, welding wire. |
| Forging | Drawing, OD, ID, thickness, weight, machining allowance | Forged ring, disc, block, shaft, custom shape. |
Custom Cutting Service
Custom cutting can reduce buyer preparation work and material waste. For bars, suppliers can cut to fixed length. For plates, suppliers can cut according to drawing or machining blank size. For tubes, suppliers can provide exact lengths with end protection. Cutting tolerance, saw loss, edge quality, and packing method should be confirmed in advance.
Machining Allowance
For forged bars, rings, or large machined parts, buyers should allow enough machining allowance. Surface scale, ovality, straightness, and forging tolerance should be considered. If the final part has tight tolerance, it is better to discuss rough machining, semi-finished machining, or precision grinding before ordering.
Heat Treatment and Delivery Conditions of Inconel 718
Heat treatment is one of the most important technical factors for Inconel 718. The alloy can be supplied in solution annealed, solution treated, aged, solution treated and aged, or custom heat-treated condition. Mechanical properties can change greatly depending on condition.
Common Delivery Conditions
| Condition | Meaning | Typical Use |
|---|---|---|
| Annealed / Solution Annealed | Material is softened and prepared for forming, machining, or later aging. | Sheet, plate, bar, and fabrication stock. |
| Solution Treated | Material is heat treated to dissolve phases and prepare for aging. | Bar, forging, and machined components before final aging. |
| Solution Treated and Aged | Material receives final strengthening treatment. | Fasteners, shafts, springs, rings, high-strength parts. |
| Double Aged | Two-step aging treatment to develop required strength. | AMS and high-strength specification requirements. |
| Custom Heat Treated | Heat treatment follows customer drawing or project specification. | Aerospace, oilfield, and critical engineering components. |
Why Heat Treatment Must Be Confirmed Before Quotation
An annealed Inconel 718 bar and an aged Inconel 718 bar are not the same for price or performance. Aged material requires additional furnace treatment, longer process time, and often mechanical testing. If the buyer needs specific tensile strength, yield strength, hardness, or AMS condition, this must be stated in the inquiry.
Typical Heat Treatment Logic
Inconel 718 is commonly solution treated and then aged to develop high strength. Different specifications may require different temperatures, holding times, cooling methods, and aging cycles. Buyers should not rely only on a general heat treatment description. The required AMS, ASTM, EN, customer drawing, or engineering specification should control the final condition.
Mechanical Properties and High-Temperature Strength
Inconel 718 is known for high mechanical strength after age hardening. Its mechanical properties depend on product form, size, heat treatment, testing direction, specification, and temperature. For critical applications, buyers should request actual test results from the supplier’s material test certificate.
Typical Mechanical Property Considerations
| Property | General Inconel 718 Performance | Buyer Note |
|---|---|---|
| Density | About 8.19 g/cm³ | Useful for weight calculation and freight planning. |
| Tensile Strength | High after age hardening | Final value depends on product standard and heat treatment. |
| Yield Strength | Very high in aged condition | Important for fasteners, shafts, rings, and pressure parts. |
| Elongation | Good balance of strength and ductility | Must be checked according to condition and specification. |
| Hardness | Higher after aging | Useful for verifying heat treatment condition. |
| Creep Strength | Good in suitable elevated-temperature service | Important for turbine and hot-section support applications. |
| Fatigue Resistance | Good for high-strength cyclic loading applications | Surface condition and heat treatment strongly affect performance. |
High-Temperature Strength
Inconel 718 is commonly used where high strength must be retained at elevated temperature. It is often selected for service up to about 650°C in many engineering applications, depending on design code, load, atmosphere, and required life. For temperatures beyond the suitable range of 718, buyers may need to compare Waspaloy, Rene 41, Nimonic 263, Haynes alloys, or other high-temperature superalloys.
Cryogenic Strength
Inconel 718 also performs well at low temperatures. This makes it useful for cryogenic systems, aerospace hardware, and low-temperature engineering parts. When cryogenic service is required, the buyer should confirm the relevant test standard and toughness requirement.
Corrosion Resistance and Oxidation Resistance Performance
Inconel 718 provides good corrosion resistance in many environments because of its nickel-chromium-molybdenum composition. It is used in oil and gas, marine, aerospace, power generation, and chemical processing applications where strength and corrosion resistance must work together.
Corrosion Resistance
The nickel base helps resist many corrosive media, while chromium improves resistance to oxidizing conditions. Molybdenum improves resistance to localized corrosion in some environments. This makes Inconel 718 useful in sour service, chloride-containing environments, seawater-related components, and oilfield equipment, depending on exact service conditions and specification.
Oxidation Resistance
Chromium content gives Inconel 718 useful oxidation resistance at elevated temperatures. It can resist scaling in many hot gas and high-temperature environments. However, if the main requirement is very severe oxidation above the common service range of 718, alloys such as Inconel 601, Alloy 602CA, or other high-temperature oxidation-resistant alloys may be considered.
Material Selection Warning
Inconel 718 should not be selected only because it is a strong nickel alloy. If the environment involves strong acids, very high-temperature oxidation, molten salts, or special chemical media, buyers should confirm corrosion compatibility before ordering. A professional supplier should ask about service environment when the application is critical.
Common Specifications and Standards for Inconel 718
Inconel 718 can be supplied under several standards depending on product form and industry. The standard is important because it controls chemical composition, heat treatment, mechanical properties, testing, and acceptance requirements.
Common Standards by Product Form
| Standard | Common Product Form | Procurement Meaning |
|---|---|---|
| ASTM B637 | Bar, forging, forging stock | Common reference for precipitation-hardening nickel alloy bar and forging products. |
| AMS 5662 | Bar, forgings, rings | Common aerospace specification for solution-treated condition. |
| AMS 5663 | Bar, forgings, rings | Common aerospace specification for solution-treated and aged condition. |
| AMS 5596 | Sheet, strip, plate | Common aerospace flat product specification. |
| AMS 5597 | Sheet, strip, plate | Common flat product specification for aged condition. |
| ASTM B670 | Plate, sheet, strip | Common reference for precipitation-hardening nickel alloy flat products. |
| API / NACE-related requirements | Oilfield parts and sour service components | Used when oil and gas corrosion and strength requirements are involved. |
| Customer Drawing | Custom parts, fasteners, machined components | May define special heat treatment, testing, dimensions, and acceptance criteria. |
Why Standards Must Be Written on the Purchase Order
If the buyer only writes “Inconel 718 bar,” the supplier may quote commercial-grade material. If the part requires AMS 5663, ASTM B637, or a customer drawing, the quotation may be different because heat treatment, mechanical properties, inspection, and traceability requirements become stricter. Buyers should always include the standard number and product condition in the inquiry.
Quality Inspection, MTC, and Traceability from Inconel 718 Suppliers
Quality inspection is a key part of Inconel 718 supply because the material is often used in critical applications. A reliable supplier should provide proper documents and inspection records according to customer requirements.
Common Inspection Items
| Inspection Item | Purpose | When It Is Important |
|---|---|---|
| Chemical Analysis | Confirms UNS N07718 composition. | All professional Inconel 718 orders. |
| PMI Test | Prevents material mix-up before shipment or fabrication. | Useful for multi-grade inventory and export orders. |
| Tensile Test | Checks tensile strength, yield strength, and elongation. | Required for mechanical-property-controlled orders. |
| Hardness Test | Verifies heat treatment and strength condition. | Important for aged bar, fastener stock, and machined parts. |
| Ultrasonic Testing | Checks internal defects in bar, plate, or forging. | Important for aerospace, oilfield, and large-section materials. |
| Dimension Inspection | Checks diameter, thickness, width, length, wall thickness, and tolerance. | Needed for precision machining and assembly. |
| Surface Inspection | Checks cracks, pits, scratches, scale, and surface defects. | Important for sheet, plate, bar, tube, and polished products. |
| Microstructure Inspection | Evaluates grain structure or special metallurgical requirements. | Used for critical engineering and aerospace projects. |
| Third-Party Inspection | Provides independent verification. | Useful for export projects and high-value material orders. |
Material Test Certificate
A material test certificate should show grade, heat number, chemical composition, product form, size, heat treatment condition, standard, mechanical properties when required, and inspection results. For critical applications, heat number traceability from raw material to final shipment should be maintained.
Traceability Requirement
Traceability is especially important for aerospace, oil and gas, marine, and pressure equipment projects. The heat number on the material, package label, packing list, and MTC should be consistent. If the buyer requires full traceability, this should be stated before placing the order.
Inconel 718 Applications in Aerospace, Oil & Gas, Marine, and Power Industries
Inconel 718 is widely used because it combines high strength, corrosion resistance, temperature resistance, and good processing behavior. Different industries use different product forms and specifications.
Aerospace Applications
In aerospace, Inconel 718 is used for turbine engine components, compressor parts, fasteners, rings, casings, shafts, springs, and structural hardware. Aerospace buyers often require AMS standards, strict heat treatment, mechanical testing, and full traceability.
Oil and Gas Applications
In oil and gas, Inconel 718 is used for downhole tools, wellhead components, valves, springs, fasteners, packer components, completion equipment, and sour service parts. High strength and corrosion resistance are both important in these applications.
Marine Applications
In marine environments, Inconel 718 can be used for high-strength fasteners, shafts, springs, valve parts, pump components, and equipment exposed to chloride-containing conditions. Material selection should consider seawater exposure, crevice corrosion, stress level, and galvanic contact with other metals.
Power Generation Applications
In power generation, Inconel 718 is used for gas turbine parts, high-strength bolts, springs, supports, rings, and components exposed to heat and stress. It is also used in nuclear and advanced energy applications where strength and corrosion resistance are needed.
| Industry | Typical Inconel 718 Parts | Main Requirement |
|---|---|---|
| Aerospace | Turbine parts, rings, casings, fasteners, shafts, springs | High strength, heat resistance, AMS compliance, traceability. |
| Oil and Gas | Downhole tools, valves, wellhead parts, springs, fasteners | Strength, corrosion resistance, sour service suitability. |
| Marine | Fasteners, shafts, pump parts, valve components | Chloride resistance and high mechanical strength. |
| Power Generation | Gas turbine components, bolts, supports, rings | Elevated-temperature strength and oxidation resistance. |
| Chemical Processing | High-strength pressure parts, valves, springs, hardware | Corrosion resistance and mechanical reliability. |
| Cryogenic Equipment | Low-temperature fasteners, supports, structural parts | Strength and toughness at very low temperature. |
Inconel 718 Price Factors, MOQ, Stock Availability, and Lead Time
Inconel 718 price depends on nickel, chromium, niobium, molybdenum, titanium, and aluminum cost, as well as product form, size, heat treatment, tolerance, surface finish, testing, quantity, and delivery time. Buyers should not compare price only by grade name.
Main Price Factors
| Price Factor | How It Affects Cost | Buyer Suggestion |
|---|---|---|
| Raw material market | Nickel, niobium, molybdenum, and other alloying elements affect base cost. | Confirm quotation validity before ordering. |
| Product form | Bar, plate, sheet, tube, wire, and forging have different production costs. | Specify product form clearly. |
| Heat treatment | Aged condition costs more than simple annealed condition. | State required condition in the inquiry. |
| Size and tolerance | Special sizes and tight tolerances require more processing. | Use standard stock size when possible. |
| Surface finish | Peeled, ground, polished, or machined surfaces increase price. | Choose finish according to actual machining needs. |
| Testing requirement | UT, PMI, tensile test, hardness, and third-party inspection add cost. | List tests before quotation. |
| Quantity | Small orders usually have higher unit prices. | Combine sizes or increase order quantity if practical. |
| Stock availability | Stock material ships faster; custom production needs more time. | Confirm inventory and production schedule early. |
| Delivery term | Air freight, sea freight, courier, CIF, DAP, or EXW changes total cost. | Provide destination and preferred trade term. |
MOQ and Small Batch Supply
Inconel 718 suppliers may support small batch orders if stock is available. However, small quantity orders usually have higher unit cost because cutting, testing, packing, and documentation costs are spread over fewer kilograms. For custom forgings, special tube sizes, or non-stock wire, MOQ may be required.
Lead Time
If Inconel 718 bar, plate, sheet, or wire is available in stock, delivery can be faster after cutting, inspection, packing, and documentation. If the order requires production, forging, heat treatment, aging, grinding, ultrasonic testing, or third-party inspection, lead time will be longer. For aerospace or oilfield projects, buyers should leave enough time for inspection and certificate review.
How to Choose Reliable Inconel 718 Suppliers
Choosing reliable Inconel 718 suppliers requires more than checking the lowest price. Buyers should confirm technical knowledge, material traceability, heat treatment capability, testing support, product range, stock availability, export experience, and communication quality.
Supplier Selection Checklist
| Supplier Checkpoint | What to Confirm | Why It Matters |
|---|---|---|
| Grade knowledge | Inconel 718 / UNS N07718 / W.Nr. 2.4668 identification | Prevents confusion with other nickel alloys. |
| Standard support | ASTM B637, AMS 5662, AMS 5663, AMS 5596, AMS 5597, customer standard | Ensures correct technical compliance. |
| Product range | Bar, plate, sheet, pipe, tube, wire, forging, ring, fastener stock | Supports complete project sourcing. |
| Heat treatment capability | Solution treatment, aging, custom condition | Mechanical performance depends on proper heat treatment. |
| Testing capability | MTC, PMI, tensile test, hardness, UT, third-party inspection | Provides confidence for critical applications. |
| Traceability | Heat number marking, certificate matching, batch control | Required for aerospace, oilfield, marine, and power projects. |
| Processing support | Cutting, peeling, grinding, machining blanks, custom forging | Reduces buyer workload and improves project efficiency. |
| Export experience | Packaging, documentation, marking, international shipping | Helps avoid delivery and customs problems. |
Questions Buyers Should Ask Suppliers
Before placing an order, buyers should ask whether the material is in stock or made to order, what standard it meets, what heat treatment condition is supplied, whether MTC is available, whether mechanical testing is included, whether ultrasonic testing is possible, whether the material can be cut or ground, and what lead time is needed.
Why Very Low Prices Need Careful Checking
Very low prices may not include required heat treatment, testing, certificate, tolerance, or correct standard. For Inconel 718, wrong condition can create serious problems. For example, annealed bar and aged bar may look similar but have very different mechanical properties. Buyers should compare offers based on the same grade, standard, size, condition, testing, and delivery term.
How to Send a Clear Inquiry to Inconel 718 Suppliers
A clear inquiry helps suppliers provide faster and more accurate quotations. Buyers should include grade, product form, size, quantity, standard, heat treatment condition, surface finish, tolerance, testing requirement, application, and delivery destination.
Inquiry Information Table
| Inquiry Item | Example Information | Why It Matters |
|---|---|---|
| Grade | Inconel 718 / Alloy 718 / UNS N07718 / W.Nr. 2.4668 | Confirms the exact material. |
| Product form | Bar, plate, sheet, pipe, tube, wire, forging, ring | Determines production route and price. |
| Size | Diameter, thickness, width, length, OD, wall thickness | Determines stock availability and processing cost. |
| Quantity | Kg, pieces, meters, sheets, coils, rings | Affects unit price, MOQ, and lead time. |
| Standard | ASTM B637, AMS 5662, AMS 5663, AMS 5596, AMS 5597, drawing | Controls technical acceptance requirements. |
| Heat treatment | Annealed, solution treated, aged, solution treated and aged | Affects mechanical properties and quotation. |
| Surface finish | Black, pickled, peeled, polished, ground, machined | Changes tolerance, appearance, and cost. |
| Tolerance | Standard tolerance, h7, special flatness, custom tolerance | Determines whether extra finishing is needed. |
| Testing | MTC, PMI, tensile test, hardness, UT, third-party inspection | Ensures quality and project compliance. |
| Application | Aerospace, oil and gas, marine, power, fasteners, shafts | Helps supplier confirm suitable condition and standard. |
| Delivery destination | Country, port, courier address, trade term | Needed for freight, packing, and export documents. |
Example of a Professional Inquiry
A clear inquiry may read: “Please quote Inconel 718 round bar, UNS N07718 / W.Nr. 2.4668, ASTM B637, diameter 25 mm, length 3000 mm, solution treated and aged, peeled surface, quantity 500 kg, with MTC, tensile test, hardness test, and UT, delivery to Italy.” This type of inquiry allows the supplier to check stock, heat treatment, testing cost, cutting, packing, and lead time accurately.
Packaging and Export Support from Inconel 718 Suppliers
Inconel 718 is a high-value nickel alloy, so packaging should protect the material from surface damage, moisture, impact, and material mixing during transportation. Proper marking and documentation are also important for international buyers.
Common Packaging Methods
| Product Form | Common Packaging | Protection Purpose |
|---|---|---|
| Bar / Rod | Bundles, plastic wrapping, wooden cases, pallets, end protection | Prevents bending, scratches, and mixing. |
| Plate / Sheet | Waterproof paper, wooden pallets, edge protection, steel straps | Protects surface and plate edges. |
| Pipe / Tube | Bundled packing, plastic caps, wooden cases, moisture protection | Protects tube ends and prevents deformation. |
| Wire | Coils, spools, cartons, wooden cases | Protects coil shape and surface. |
| Forgings / Rings | Wooden cases, pallets, custom supports | Protects heavy and machined surfaces. |
Export Documents
Common export documents include commercial invoice, packing list, material test certificate, certificate of origin if required, third-party inspection report if requested, and shipping documents. If the customer needs special label, heat number marking, or project-specific document format, this should be confirmed before shipment.
Inconel 718 Suppliers Related Questions
What is Inconel 718 used for?
Inconel 718 is used for aerospace engine components, turbine parts, fasteners, shafts, springs, rings, oil and gas downhole tools, valves, marine hardware, power generation equipment, cryogenic components, and high-strength machined parts. It is selected because it provides high strength, corrosion resistance, oxidation resistance, and good weldability compared with many other nickel-based superalloys.
How do I choose an Inconel 718 supplier?
Choose an Inconel 718 supplier by checking grade knowledge, UNS N07718 certification, available product forms, stock size range, heat treatment capability, MTC traceability, testing support, cutting and processing ability, export experience, and communication quality. A reliable supplier should confirm standard, condition, size, quantity, testing, and application before giving a final quotation.
What is the price of Inconel 718 per kg?
Inconel 718 price per kg depends on product form, size, standard, heat treatment, surface condition, tolerance, quantity, testing requirement, stock availability, and current nickel, niobium, and molybdenum market prices. Standard stock bar may have a different price from aged bar, AMS-certified material, precision ground rod, forged ring, or custom machined part, so buyers should request a quotation based on exact specifications.
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