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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

PropertyValue
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.