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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

PropertyValue
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.