高强度碳钢：SCC3 SCC5 SCMn1 SCMn2 SCMn3 SCMn5 SCSiMn2 SCMnCr2 SCMnCr3 SCMnCr4 SCMnM1 SCMnM3 SCCrM1 SCCrM3 SCMnCrM2 SCNCrM2 SCC3A SCC3B SCC5A SCC5B SCMn1A SCMn1B SCMn2A SCMn2B SCMn3A SCMn3B SCMn5A SCMn5B SCSiMn2A SCSiMn2B SCMnCr2A SCMnCr2B SCMnCr3A SCMnCr3B SCMnCr4A SCMnCr4B SCMnM3A SCMnM3B SCCrM1A SCCrM1B SCCrM3A SCCrM3B SCMnCrM2A SCMnCrM2B SCNCrM2A SCNCrM2B
