: Guangzhou Changfeng Steel Co., LTD

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SCM440 4140 1.7225 Oil Hardening Alloy Hardened Tool Steel Bars For Mechanical

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Guangzhou Changfeng Steel Co., LTD

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SCM440 4140 1.7225 Oil Hardening Alloy Hardened Tool Steel Bars For Mechanical

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SCM440 4140 1.7225 Oil Hardening Alloy Hardened Tool Steel Bars For Mechanical

SCM440 4140 1.7225 oil hardening tool steel bars For Mechanical SCM440 4140 1.7225 oil hardening tool steel bars For Mechanical Chemical composition(%): C Si Mn Cr P S Mo 0.38-0.45 0.17-0.37 0.50-0.80 ...

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engineering special steels

h13 tool steel

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