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纰� C 锛�0.80锝�0.90(鍏佽ū鍋忓樊:卤0.01)
纭� Si锛�0.20锝�0.45(鍏佽ū鍋忓樊:卤0.05)
閷� Mn锛�0.15锝�0.40(鍏佽ū鍋忓樊:+0.04)
纭� S 锛氣墹0.030
纾� P 锛氣墹0.030
閴� Cr锛�3.80锝�4.40(鍏佽ū鍋忓樊:卤0.05)
閹� Ni锛氬厑瑷辨畼浣欏惈閲忊墹0.30
閵� Cu锛氬厑瑷辨畼浣欏惈閲忊墹0.25
閲� V 锛�1.75锝�2.20(鍏佽ū鍋忓樊:卤0.05)
閴� Mo锛�4.50锝�5.50(鍏佽ū鍋忓樊:灏哄鈮�6,卤0.05;灏哄>6,卤0.10)
閹� W 锛�5.50锝�6.75(鍏佽ū鍋忓樊:灏哄鈮�10,卤0.10;灏哄>10,卤0.20)
閳� Co锛�4.50锝�5.50(鍏佽ū鍋忓樊:卤0.15)
SKH-55楂橀€熼嫾鎬ц兘
鎬ц兘锛氶壃绯婚珮纰冲惈閳疯秴纭瀷楂橀€熷伐鍏烽嫾锛岀‖搴﹂珮锛屽彲閬�63HRC锛岀啽纭€уソ锛岄珮婧‖搴﹂珮锛屽鏄撶（鍓�銆�
SKH-55楂橀€熼嫾閬╃敤鑼冨湇
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