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.