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TA的每日心情 | 奋斗 2016-3-26 22:49 |
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签到天数: 39 天 [LV.5]常住居民I
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本帖最后由 馬汀三貼 于 2016-4-11 17:56 编辑
1.SK5是日本的碳素工具钢,S表Steel,K表工具(新标示是SK85,85表含碳量0.85%)
碳0.80-0.90% 硅0.35% 锰0.50% 磷0.030% 硫0.030%
SK4(SK95) 碳0.9-1.0%~~~
SK3(SK105)
SK2(SK120)
SK1(SK140)
2.对比下3种常见碳钢
碳钢1095
碳0.9-1.0% 锰0.4% 磷0.04% 硫0.05%
弹簧钢5160
碳0.6% 硅0.15-0.3% 锰0.75%-1%磷0.04%硫0.04%铬0.7-0.9%
轴承钢GCr15(日suj2)(52100)
碳1% 硅0.15~0.35%锰0.25~0.45%磷0.03%(≤0.025?)硫0.03%(≤0.015?)铬1.35~1.60%
3.钢号对照,T表工具钢代号,数字表含碳量
T7 = sk7,sk6
T8 = sk6,sk5
T8Mn= sk5
T9(含碳量0.9%) = sk4(含碳量0.9%~1.0%),sk5(含碳量0.8%~0.9%)
T10 = sk3,sk4
T11 =? sk3
T12 =? sk2
T13 =? sk1
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