Chemical Composition

Identification Symbol	UNS Number	Grade	Elements	Composition %
F44	S31254	20 chromium, 18 nickel, 6 molybdenum, low carbon	Carbon	0.020 max
			Manganese	1.00 max
			Phosphorus	0.030 max
			Sulfur	0.10 max
			Silicon	0.80 max
			Nickel	17.5 - 18.5
			Chromium	19.5 - 20.5
			Molybdenum	6.00 - 6.5
			Copper	0.50 - 1.00
			Nitrogen	0.18 - 0.25

Mechanical Properties

Property	Value
Tensile Strength, min, ksi [MPa]	94 [650]
Yield Strength, min, ksi [MPa]	44 [300]
Elongation in 2 in. [50mm] or 4D, min, %	35
Reduction or Area, min, %	50
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.