Description:
P20 is an American grade of pre-hardened plastic mold steel.
(This steel corresponds to Chinese grade: 3Cr2Mo ; German DIN standard material number 1.2311 )
Chemical composition content:
C:0.28-0.40 Si:0.20-0.80 Mn:0.60-1.00 S:≤0.030
P:≤0.030 Cr:1.40-2.00 Mo:0.30-0.55