28Cr2Mo GY4 high pressure steel

28Cr2Mo (high pressure Gy4), 26SiMnMo (high pressure Gy5), this type (28CrMo Gy4) steel plate is a protective steel plate of quenching and low temperature tempering.

Homogeneous Gy4 28Cr2Mo steel plate needs to have high protective performance, and also to meet the requirements of the tank manufacturing industry, it is required to have good processability and welding performance.

The 28CrMo (Gy4) and 26SiMnMo (Gy5) steel plates trial-produced in my country are mainly used in state-owned protective equipment.

Chemical composition of 28Cr2Mo steel plate:
C: 0.25-0.31
Si: 0.18-0.35
Mn: 0.30-0.55
P:≤0.030
S:≤0.030
Cr: 1.80-2.30
Ni: ≤0.50
Mo: 0.25-0.35
Cu: ≤0.30

The 32Mn2Si2MoA used for aviation protection steel plate has been trial-produced since the early 1960s when it imitated the Soviet brand.

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