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Incoloy 825/Alloy 825/UNS N08825/W.Nr. 2.4858

Incoloy 825/Alloy 825/UNS N08825/W.Nr. 2.4858

Incoloy 825 (Alloy 825), designated as UNS N08825 and W.Nr. 2.4858, is a nickel-iron-chromium alloy that offers excellent resistance to both reducing and oxidizing acids. It also provides exceptional resistance to stress-corrosion cracking, pitting, and crevice corrosion, making it ideal for highly corrosive environments.

Common applications for Incoloy 825 include chemical processing, acid production, pollution control, and marine equipment. Its ability to withstand harsh conditions involving sulfuric, phosphoric, and other aggressive acids makes it a popular choice for industries requiring durable, corrosion-resistant materials.

Incoloy 825/Alloy 825/UNS N08825/W.Nr. 2.4858
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Incoloy 825/Alloy 825/UNS N08825/W.Nr. 2.4858 Chemical Compositions

 Nickel (Ni) 38.0-46.0 %
 Iron (Fe) 22.0 % min.
 Chromium (Cr) 19.5-23.5 %
 Molybdenum (Mo) 2.5-3.5 %
 Copper (Cu) 1.5-3.0 %
 Titanium (Ti) 0.6-1.2 %
 Carbon (C) 0.05 % max.
 Manganese (Mn) 1.0 % max.
 Sulfur (S) 0.03 % max.
 Silicon (Si) 0.5 % max.
 Aluminum (Al) 0.2 % max.

Incoloy 825/Alloy 825/UNS N08825/W.Nr. 2.4858 Physical Properties

Density,

lb/in3

0.294

Mg/m3

8.14

Melting Range

°F

2500-2550

°C

1370-1400

Specific Heat

Btu/lb•°F

0.105

J/kg•°C

440

Curie Temperature

°F

<-320

°C

<-196

Permeability at 200 oersted (15.9 kA/m)

1.005

Incoloy 825/Alloy 825/UNS N08825/W.Nr. 2.4858 Mechanical Properties

Temperature

Yield strength

Tensile strength

Elongation

Rp 0.2

Rm

A

°C

°F

MPa

Ksi

MPa

ksi

%

20

68

240

34.8

585

84.8

30

Incoloy 825/Alloy 825/UNS N08825/W.Nr. 2.4858 Standard Specifications

Bar and Rod Forgings Seamless Pipe and Tube Welded Pipe and Tube Plate, Sheet, and Strip Fittings
ASTM B 425 & ASME SB 425 ASTM B 564 & ASME SB 564  ASTM B 163/B 407 & ASME SB 163/ SB 407 ASTM B 704/B 705 & ASME SB 704/ SB 705 ASTM B 424 & ASME SB 424 ASTM B 366/ASME SB 366

Standard product forms of Incoloy 825/Alloy 825/UNS N08825/W.Nr. 2.4858 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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