SKS3材料高韌性,高硬度空冷淬硬高鉻工具鋼,比SKD鋼材的硬度及韌性好．
SKS3特性與用途:
<真空精煉鋼質(zhì)純凈；
<球化退火軟化組織易于切削加工；
<淬火時(shí)具有很高的硬度；
回火后具有較好的尺寸穩(wěn)定性。
廣泛用于制做厚度不大于 8mm 的沖裁模、沖壓模、彎曲模、精整模；
<也被大量用于制做量規(guī)、量具、木工刀具及車(chē)床頂針等；
<也被廣泛用于制引導(dǎo)襯套、頂針、板牙、絲針等。
SKS3熱處理規(guī)范:
淬 火:先預(yù)熱至550℃~650℃，再加熱至800~850℃在油中淬硬。
回 火:加熱至150℃~200℃，在此溫度中停留，然后在靜止空氣中淬冷卻。
硬 度:HRC60℃以上
退 火:加熱至750~800℃，在此溫度中停留一至三小時(shí)，在爐中任其漸冷。
化學(xué)成份(%):
C :0.9-1.0
Mo :0.1-0.2
Mn :0.9-1.2
Cr :0.5-1.0
Si :≦0.35
W :0.6-0.9
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