有高的强度、韧度和良好的淬透性和抗过热的稳定性，但白点敏感性高，有回火脆性。焊接性较差，焊前需经高温预热，焊后需消除应力，经调质后使用。

化学成分

金满地45451cc碳C 0.37~0.44

硅Si 0.17~0.37

金满地45451cc锰Mn0.50～0.80

硫S 允许残余含量≤0.025

磷P 允许残余含量≤0.025

金满地45451cc铬Cr 0.60～0.90

镍Ni 1.25～1.65

金满地45451cc铜Cu 允许残余含量≤0.25

金满地45451cc钼Mo0.15～0.25

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It has high strength, toughness, good hardenability and resistance to overheating, but has high white point sensitivity and temper brittleness. Poor weldability, preheating before high temperature, need to eliminate stress after welding, after quenching and tempering.

chemical composition

金满地45451ccCarbon C 0.37~0.44

金满地45451ccSilicon Si 0.17~0.37

Manganese Mn 0.50~0.80

Sulfur S allows residual content ≤0.025

Phosphorus P allows residual content ≤0.025

金满地45451ccChromium Cr 0.60～0.90

Nickel Ni 1.25~1.65

金满地45451ccCopper Cu allows residual content ≤ 0.25

金满地45451ccMolybdenum Mo0.15～0.25