Chemical Composition

Identification Symbol	UNS Number	Grade	Elements	Composition %
F20	N08020	35 nickel, 20 chromium, 3.5 copper, 2.5 molybdenum	Carbon	0.07 max
			Manganese	2.00 max
			Phosphorus	0.045 max
			Sulfur	0.035 max
			Silicon	1.00 max
			Nickel	32.00 - 38.00
			Chromium	19.00 - 21.00
			Molybdenum	2.00 - 3.00
			Columbium	8xCmin - 1.00
			Copper	3.00 - 4.00

Mechanical Properties

Property	Value
Tensile Strength, min, ksi [MPa]	80 [550]
Yield Strength, min, ksi [MPa]	35 [240]
Elongation in 2 in. [50mm] or 4D, min, %	30
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.