CK20 ASTM A743&A743M

GradeUNS:CK20(J94202)

Type:25Chromium, 20 Nickel

Chemical Requirements:

C(max):0.20

Men(max):2.00

Si(max):2.00

P(max):0.04

S(max):0.04

Cr:23.0~27.0

Ni:19.0~22.0

 

Heat Treatment Requirements:

Heat to 2000°F [1093°C] minimum, hold for sufficient time to heat casting to temperature, quench in water or rapid

cool by other means

Tensile Requirements:

Tensile Strength, min

Tensile, ksi: 65

Tensile, MPa:450

Yield Strength, min

Yield, ksi:28

Yield, MPa:195

Elongation in 2 in. [50 mm] min, %A: 30

Keywords: corrosion resistant; iron-chromium; iron-chromium nickel; steel castings