Alloy 800
Equivalent designations
UNS N08800
DIN W. Nr. 1.4876
Form
ASTM
Rod and bar
B 408
Plate, sheet and strip
A 240, A 480, B 409, B 906
Seamless pipe and tube
B 407, B 829
Welded pipe
B 514, B 775
Welded tube
B 515, B 751
Welding fitting
B 366
Forging
B 564
Chemical composition
%
Fe
Ni
Cr
C
Mn
Si
S
Cu
Al
Ti
min
39.5
30.0
19.0
0.15
0.15
max
35.0
23.0
0.10
1.50
1.00
0.015
0.75
0.60
0.60
Physical properties
Density
7.94 g/cm3
Melting range
1357-1385℃
Features: Incoloy 800 has good rupture and creep strength and excellent resistance to oxidation, carburization and sulfidation at temperatures up to 816℃. It also resists general corrosion by many aqueous media. For applications requiring higher stress rupture and creep properties, especially at temperatures above 816℃, Incoloy 800H and 800HT are recommended. Incoloy 800 is readily formed, welded and machined.
Applications: Chemical and petrochemical process piping, heat exchangers, furnace components, carburizing equipment, heating-element sheathing, and nuclear power steam-generator tubing.