Hastelloy C-4 (Alloy C-4), with UNS N06455 and W.Nr. 2.4610, is a highly corrosion-resistant nickel-molybdenum alloy designed for superior performance in aggressive chemical environments. It offers excellent resistance to pitting, crevice corrosion, and stress-corrosion cracking, even in highly acidic environments like hydrochloric and sulfuric acid.
Hastelloy C-4 is widely used in industries such as chemical processing, pharmaceutical manufacturing, and waste treatment, where materials need to withstand aggressive chemicals and high temperatures. Its excellent resistance to both oxidizing and reducing environments makes it ideal for applications such as heat exchangers, reactors, and piping systems in corrosive environments.
| Nickel (Ni) | Balance |
| Chromium (Cr) | 14-18% |
| Molybdenum (Mo) | 14-17% |
| Iron (Fe) | 3.0% max. |
| Cobalt (Co) | 2.0% max. |
| NCarbon (C) | 0.015% max. |
| Manganese (Mn) | 1% max |
| Sulfur (S) | 0.03% max. |
| Silicon (Si) | 0.08% max. |
| Phosphorus (P) | 0.04% max. |
| Titanium (Ti) | 0.7% max. |
| Density | 8.6 g/ cm³ at 20 °C (537 lb/ft³ at 68 °F) |
| Melting Range | 1,335-1,380 °C (2,430-2,520 °F) |
|
Temperature |
Yield strength |
Yield strength |
Tensile strength |
Elongation at fracture |
||||
|
Rp 0.2 |
Rp 1.0 |
Rm |
A |
|||||
|
°C |
°F |
MPa |
ksi |
MPa |
ksi |
MPa |
ksi |
% |
|
20 |
68 |
300 |
43.5 |
330 |
47.9 |
700-900 |
102-131 |
40 |
| Bar and Rod | Seamless Pipe and Tube | Welded Pipe and Tube | Plate, Sheet, and Strip | Fittings |
| ASTM B 574/ASME SB 574 | ASTM B 622 / ASME SB 622 | ASTM B 626 /ASME SB 626, ASTM B 619 / ASME SB 619 | ASTM B 575/ASME SB 575 | ASTM B 366/ASME SB 366 |
Standard product forms of Hastelloy C-4/Alloy C-4/UNS N06455/W. Nr. 2.4610 are pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire. The products are available in a wide variety of sizes. Please contact us at [email protected] for full information.
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