Chemical Composition

Grade Symbol	UNS Number	Alloy	Elements	Composition %
F317L	S31703	19 chromium, 13 nickel, 3.5 molybdenum 317LG	Carbon	0.08 max
			Manganese	2.00 max
			Phosphorus	0.045 max
			Sulfur	0.030 max
			Silicon	1.00 max
			Nickel	11.0 - 15.0
			Chromium	18.0 - 20.0
			Molybdenum	3.0 - 4.0

Mechanical Properties

Property	Value
Tensile Strength, min, ksi [MPa]	70 [485]D
Yield Strength, min, ksi [MPa]	25 [170]
Elongation in 2 in. [50mm] or 4D, min, %	30
Reduction or Area, min, %	50

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.