材料名稱:合金工具鋼 | | | | | | | | | | | | | | | | | | | | | 牌號:CrWMn | | | | | | | | | | | | | | | | | | | | | 標準:GB/T 1299-1985 | | | | | | | | | | | | | | | | | | | | | ●特性及適用范圍: | | | | | | | | | | | | | | | | | | | | | 是應用較為廣泛的冷作模具鋼,被譽為“不變形鋼”,但形成網狀碳化物比較敏感。主要用作淬火時要求變形很小,長而形狀復雜的切削刀具(如拉刀、長絲錐、長鉸刀、專用銑刀)和量具(如板牙、塊規、量規、樣柱、樣套)以及截面不大而形狀復雜的高精度的冷沖模等。 | | ●化學成份: | | | | | | | | | | | | | | | | | | | | | 碳 C :0.90~1.05 | | | | | | | | | | | | | | | | | | | | | 矽 Si:≤0.40 | | | | | | | | | | | | | | | | | | | | | 錳 Mn:0.80~1.10 | | | | | | | | | | | | | | | | | | | | | 硫 S :≤0.03 | | | | | | | | | | | | | | | | | | | | | 磷 P :≤0.03 | | | | | | | | | | | | | | | | | | | | | 鉻 Cr:0.90~1.20 | | | | | | | | | | | | | | | | | | | | | 鎳 Ni:允許殘餘含量≤0.25 | | | | | | | | | | | | | | | | | | | | | 銅 Cu:允許殘餘含量≤0.30 | | | | | | | | | | | | | | | | | | | | | 鎢 W :1.20~1.60 | | | | | | | | | | | | | | | | | | | | | ●力學性能: | | | | | | | | | | | | | | | | | | | | | 硬度 :退火,255~207HB,壓痕直徑3.8~4.2mm;淬火,≥62HRC | | | | | | | | | | | | | | | | | | | | | ●熱處理規范及金相組織: | | | | | | | | | | | | | | | | | | | | | 熱處理規范:淬火,800~830℃油冷。 | | | | | | | | | | | | | | | | | | | | | ●交貨狀態:鋼材以退火狀態交貨。 |
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