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Incoloy 800H/Alloy 800H/UNS N08810/W.Nr. 1.4958

Incoloy 800H/Alloy 800H/UNS N08810/W.Nr. 1.4958

Incoloy 800H, also known as Alloy 800H, N08810, and W.Nr. 1.4958, is a nickel-iron-chromium alloy with good strength and excellent resistance to high-temperature corrosion and oxidation. This alloy is designed for high-temperature applications where creep and rupture properties are required. Incoloy 800H offers superior resistance to carburization, nitridation, and other high-temperature atmospheres. It is commonly used in applications such as industrial furnaces, petrochemical processing, and heat-treating equipment, where elevated temperatures and corrosive environments are present. Additionally, this alloy is suitable for use in nitric acid and organic acid processing.

Incoloy 800H/Alloy 800H/UNS N08810/W.Nr. 1.4958
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Incoloy 800H/Alloy 800H/UNS N08810/W.Nr. 1.4958 Chemical Compositions

Nickel (Ni)  30.0-35.0 %
Chromium (Cr) 19.0-23.0 %
Iron (Fe) 39.5 % min
Carbon (C) 0.05-0.10 %
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 800H/Alloy 800H/UNS N08810/W.Nr. 1.4958 Physical Properties

Density lb/in3 0.287
g/cm3 7.94
Melting Range °F 2475-2525
°C 1357-1385
Curie Temperature (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
A°C -115

Incoloy 800H/Alloy 800H/UNS N08810/W.Nr. 1.4958 Mechanical Properties

Temperature

Yield strength

Tensile strength

Elongation

Rp 0.2

Rm

A

°C

°F

MPa

Ksi

MPa

ksi

%

20

68

170

24.7

450-700

65.3-101.5

Longit. 35 Transverse 30

Incoloy 800H/Alloy 800H/UNS N08810/W.Nr. 1.4958 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 800H/Alloy 800H/UNS N08810/W.Nr. 1.4958 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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