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1.4958

Brand name

INCOLOY® Alloy 800 H Nicrofer® 3220 H

Trade name

Alloy 800 H

Standards

Material No.
1.4958
EN Designation
X5NiCrAlTi31-20
UNS
N08810
Alloy
800 H

Description

Alloy 800 H / 1.4958 is an austenitic high-strength solid-solution nickel-iron-chromium alloy.

Special properties

Good resistance to reducing, oxidizing and nitriding atmospheres. Metallurgical stability in long-term application at high temperatures.

Chemical Composition

C
%
0.03-0.08
Si
≤ %
0.70
Mn
≤ %
1.50
P
≤ %
0.015
S
≤ %
0.01
Cr
%
19.0-22.0
Ni
%
30.0-32.5
N
%
≤ 0.030
Ti
≤ %
0.20-0.50
Cu
%
≤ 0.50
Al
%
0.20-0.50
Co
%
≤ 0.50
Nb
%
≤ 0.10

Mechanical Properties 20°C

0.2% Yield strength Rp
≥ N/mm²
170
Tensile strength Rm
N/mm²
500-750
Elongation A5
≥ %
35
Resistant on air up to
°C
1100
Modulus of elasticity
kN/mm²
194

Physical Properties 20°C

Density
g/cm³
7.94
Specific heat capacity
J/kg K
460
Thermal conductivity
W/m K
12
Electrical resistivity
Ω mm²/m
0.99

Suitable welding
filler materials

2.4648

Application

Pressure vessels and steam boilers, chemical industry, petrochemical industry

Available forms for 1.4958 / ALLOY 800 H

Sheets/Plates
Lieferform
Bars
Lieferform
Wire
Lieferform
Tubes/Pipes
Lieferform
Fittings
Lieferform
Forged / cast parts
Lieferform
Finished part (drawing)
Lieferform