Chemical Composition
Identification Symbol |
UNS Number |
Grade |
Elements |
Composition % |
F904L |
N08904 |
21 chromium, 26 nickel,
4.5 molybdenum |
Carbon |
0.02 max |
Manganese |
2.00 max |
Phosphorus |
0.04 max |
Sulfur |
0.03 max |
Silicon |
1.00 max |
Nickel |
23.00 - 28.00 |
Chromium |
19.00 - 23.00 |
Molybdenum |
4.00 - 5.00 |
Copper |
1.00 - 2.00 |
Nitrogen |
0.10 max |
Mechanical Properties
Property | Value |
Tensile Strength, min, ksi [MPa] |
71 [490] |
Yield Strength, min, ksi [MPa] |
31 [215] |
Elongation in 2 in. [50mm] or 4D, min, % |
35 |
Reduction or Area, min, % |
-- |
Brinell Hardness Number, HBW |
-- |
Heat Treatment
After hot working, forgings shall be cooled to a temperature below 1000 °F [538 °C] prior to heat treating in accordance with the requirements.