供应W18Cr4V高速工具钢M42 高速工具钢圆钢
牌号:W18Cr4V | | | | | | | | | | | | | | | | | | | | | | | | | | | |
标准:GB/T 9943-1988 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
●特性及适用范围: | | | | | | | | | | | | | | | | | | | | | | | | | | |
是使用的钨系通用型高速钢,硬度、红硬性及高温硬度较高,易于磨削加工。适用作工作温度在 600℃以下仍能保持切削性能的刀具,如车、刨、铣、铰、拉刀、钻头、各种齿轮刀具及丝锥、板牙等,适于加工软的或中等硬度 (300~320HB以下) 的材料。及制作高温耐磨机械零 |
●化学成份: | | | | | | | | | | | | | | | | | | | | | | | | | | | |
碳 C : 0.70~0.80(允许偏差:±0.01) | | | | | | | | | | | | | | | | | | | | | | | | | |
硅 Si: 0.20~0.40(允许偏差:±0.05) | | | | | | | | | | | | | | | | | | | | | | | | | |
锰 Mn: 0.10~0.40(允许偏差:+0.04) | | | | | | | | | | | | | | | | | | | | | | | | | |
硫 S :≤0.030 | | | | | | | | | | | | | | | | | | | | | | | | | | |
磷 P :≤0.030 | | | | | | | | | | | | | | | | | | | | | | | | | | |
铬 Cr: 3.80~4.40(允许偏差:±0.05) | | | | | | | | | | | | | | | | | | | | | | | | | |
镍 Ni:允许残余含量≤0.30 | | | | | | | | | | | | | | | | | | | | | | | | | |
铜 Cu:允许残余含量≤0.25 | | | | | | | | | | | | | | | | | | | | | | | | | |
钒 V : 1.00~1.40(允许偏差:±0.05) | | | | | | | | | | | | | | | | | | | | | | | | |
钼 Mo:≤0.30(允许偏差:尺寸≤6,±0.05;尺寸>6,±0.10) | | | | | | | | | | | | | | | | | | | | | | |
钨 W : 17.50~19.00(允许偏差:尺寸≤10,±0.10;>10,±0.20) | | | | | | | | | | | | | | | | | | | | | | |
●力学性能: | | | | | | | | | | | | | | | | | | | | | | | | | | | |
硬度 :交货硬度:(其他加工方法)≤269HB; (退火)≤255HB。试样热处理制度及淬回火硬度:≥63HRC | | | | | | | | | | | | | | | | | | |
●热处理规范及金相组织: | | | | | | | | | | | | | | | | | | | | | | | | | |
热处理规范:淬火,820~870℃预热,1270~1285℃(盐浴炉)或1270~1285℃(箱式炉)加热,油冷,550~570℃回火2次,每次1h。 | | | | | | | | | | | | | | | | |
●交货状态:热轧、锻制、冷拉钢棒以退火状态交货,热轧、锻制钢棒以退火+其他加工方法(剥皮、轻拉、磨光或抛光等)加工后交货。 | | | | | | | | | | | | | | | |