28Cr2Mo(GY4) steel is armored bullet-proof steel, code-named GY4. It is the main protective device on the tank. It needs to have high elasticity resistance. 28Cr2Mo steel also needs to have good processing technology and welding performance to meet the requirements of the tank manufacturing industry.
The GJB/1496A-2000 standard specifies the requirements, quality assurance regulations and delivery preparations for 28Cr2Mo(GY4), 26SiMnMo (GY5) and 22SIMn2TiB (616) rolled homogeneous armor plates for armored vehicles.
28Cr2Mo steel composition(%)
|
Grade |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
Cu |
|
28Cr2Mo |
0.25-0.31 |
0.18-0.35 |
0.30-0.55 |
≤0.030 |
≤0.030 |
1.80-2.30 |
≤0.50 |
0.25-0.35 |
≤0.30 |
28Cr2Mo(GY4) steel plate smelting method: electric arc furnace smelting should be used. After negotiation between the supplier and the buyer and indicated in the contract, other methods that can guarantee the requirements of this specification can also be used.
Scope of application
28Cr2Mo(Gy4) this type of bulletproof steel plate is a high temperature tempered bulletproof steel plate for tanks. The homogeneous armor plate Gy4 28CrMo is the main protective device on the tank, which has high elasticity resistance.
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