CF3 ASTM A743 (CENT, INVEST, SAND)
Type：19Chromium, 9 Nickel
CF3 Chemical Requirements:
C(max):0.03
Men(max)：1.50
Si(max)：2.00
P(max):0.04
S(max):0.04
Cr:17.0~21.0
Ni:8.0~12.0
Heat Treatment Requirements:
(1) Heat to 1900°F [1040°C] minimum, hold for sufficient time to heat casting to temperature, and cool rapidly.
(2)As cast if corrosion resistance is acceptable
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: 35
Keywords: corrosion resistant; iron-chromium; iron-chromium nickel; steel castings