Chemical Composition

Grade Symbol	UNS Number	Alloy	Elements	Composition %
F317	S31700	19 chromium, 13 nickel, 3.5 molybdenum 317G	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]	75 [515]C
Yield Strength, min, ksi [MPa]	30 [205]
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.