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Incoloy 800/Alloy 800/UNS N08800/W.Nr. 1.4876

Incoloy 800/Alloy 800/UNS N08800/W.Nr. 1.4876

Incoloy 800, also known as Alloy 800, UNS N08800, and W.Nr. 1.4876, is a nickel-iron-chromium alloy known for its excellent resistance to oxidation and carburization at elevated temperatures. It maintains structural stability and mechanical strength during long-term exposure to high-heat environments.

Typical applications include heat exchangers, process piping, furnace parts, and petrochemical equipment. Incoloy 800 is widely used in thermal and chemical processing industries where high-temperature corrosion resistance is critical.

Incoloy 800/Alloy 800/UNS N08800/W.Nr. 1.4876
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Incoloy 800/Alloy 800/UNS N08800/W.Nr. 1.4876 Chemical Compositions

Nickel (Ni)  30.0-35.0 %
Chromium (Cr) 19.0-23.0 %
Iron (Fe) 39.5 % min
Carbon (C) 0.10 % max
Manganese (Mn) 1.50 % max
Sulfur (S)  0.015 % max
Silicon (Si) 1.0 % max
Copper (Cu) 0.75 % max
Aluminum (Al) 0.15-0.6 %
Titanium (Ti) 0.15-0.6 %

Incoloy 800/Alloy 800/UNS N08800/W.Nr. 1.4876 Physical Properties

Density

lb/in3

0.287

g/cm3

7.94

Melting Range

°F

2475-2525

°C

1357-1385

Specific Heat, (32-212°F)

 Btu/lb•°F

0.11

(0-100°C), J/kg•°C

460

Permeability at 70°F (21°C) and 200 oersted (15

9 kA/m)

Annealed

1.014

Hot-Rolled

1.009

Curie Temperature

°F

-175

°C

-115

Incoloy 800/Alloy 800/UNS N08800/W.Nr. 1.4876 Mechanical Properties

Temperature

Yield strength

Yield strength

Tensile strength

Elongation

Rp 0.2

Rp 1.0

Rm

A

°C

°F

MPa

Ksi

MPa

ksi

MPa

ksi

%

20

68

210

30.5

240

34.8

500

72.5

30

Incoloy 800/Alloy 800/UNS N08800/W.Nr. 1.4876 Standard Specifications

Bar and Rod Forgings Seamless Pipe and Tube Welded Pipe and Tube Plate, Sheet, and Strip Fittings
ASTM B 408 & ASME SB 408 ASTM B 564 & ASME SB 564  ASTM B 163/B 407 & ASME SB 163/ SB 407 ASTM B 514/B 515 & ASME SB 514/ SB 515 ASTM B 409 & ASME SB 409 ASTM B 366/ASME SB 366

Standard product forms of Incoloy 800/Alloy 800/UNS N08800/W.Nr. 1.4876 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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