swrch20k碳结冷墩钢
钢种：碳素钢：swrch20kchemical composition % of the ladle analysis of grade swrch20kswrch20k级的熔炼分析化学成分％
| annealing hardness退火硬度 hbs哈佛商学院 | cold pull hardness冷拉硬度 hbs哈佛商学院 | preheating temperature预热温度 ℃℃ | temperature淬火温度 ℃℃ | holding time保持时间 min分 | hardening medium淬火介质 | temper temperature回火温度 ℃℃ | after tempering hardness回火后硬度 ≥hrc≥hrc | |
| salt-bath furnace盐浴炉 | controlled atmosphere furnace可控气氛炉 | |||||||
| 235235 | 262262 | 788788 | 11911191 | 12041204 | 5～155～15 | air cooling气冷 | 522522 | 6060 |
cç
≤≤si丝
≤≤mn锰
≤≤pp
≤≤s??1??71??1??771??1??71??1??7771??1??71??1??771??1??71??1??77770??1??71??1??771??1??71??1??7771??1??71??1??771??1??71??1??77775
≤≤cr铬ni镍0.18-0.230.18-0.230.1-0.350.1-0.350.3-0.60.3-0.60.030.030.0350.035≤0.2≤0.2≤0.2≤0.2mo莫al铝cu铜nb铌ti钛vvce铈 ≤0.3≤0.3 nñco合作pb铅b乙other其他
≤≤si丝
≤≤mn锰
≤≤pp
≤≤s??1??71??1??771??1??71??1??7771??1??71??1??771??1??71??1??77770??1??71??1??771??1??71??1??7771??1??71??1??771??1??71??1??77775
≤≤cr铬ni镍0.18-0.230.18-0.230.1-0.350.1-0.350.3-0.60.3-0.60.030.030.0350.035≤0.2≤0.2≤0.2≤0.2mo莫al铝cu铜nb铌ti钛vvce铈 ≤0.3≤0.3 nñco合作pb铅b乙other其他
本产品的材质是SWRCH20K，产地/厂家是宝钢，用途是零件，仓库是3600，规格是3-120
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