Alloys 800HT

Brand name

INCOLOY® Alloy 800HT Nicrofer® 3220 HP

Trade name

Alloy 800 HT

Standards

Material No.
1.4959
EN Designation
X8NiCrAlTi32-21
UNS
N08811
Alloy
800 HT

Description

Alloy 800 HT / 1.4959 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
%
0.05-0.10
Si
≤ %
0.70
Mn
≤ %
1.50
P
≤ %
0.015
S
≤ %
0.01
Cr
%
19.0-22.0
Ni
%
30.0-34.0
N
%
≤ 0.030
Ti
≤ %
0.25-0.65
Cu
%
≤ 0.50
Al
%
0.25-0.65
Co
%
≤ 0.50

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 1.4959 / ALLOY 800 HT

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

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