CH20 ASTM A743&A743M

CH20 ASTM A743&A743M  (CENT, INVEST, SAND)

GradeUNS:CH20 (J93402)

Type:25Chromium, 12 Nickel

CH20 Chemical Requirements:

C(max):0.20

Men(max):1.5

Si(max):2.00

P(max):0.04

S(max):0.04

Cr:22.0~26.0

Ni:12.0~15.0

 

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: 70

Tensile, MPa:485

Yield Strength, min

Yield, ksi:30

Yield, MPa:205

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

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

 

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