ST12是普通冷軋鋼，ST13沖壓?*湓鄭琒T14是深拉伸級的 ST15 低碳超深沖級 ST16 是超低碳超深沖級
ST12等同于DC01,SPCC
ST13等同于DC03,SPCD
ST14等同于DC04,SPCE,08AL
ST15等同于DC05,SPCF
ST16等同于DC06,SPCE-T
化學成分
**號 化學成分% 屈服點Mpa 抗拉強度Mpa 伸長率% 硬度HRB 彎曲試驗
C Si Mn P S
SPCC ≤0.12 ≤0.05 ≤0.05 ≤0.035 ≤0.035 - ≥270 ≥20 - 180攝氏度
SPCD ≤0.10 ≤0.03 ≤0.45 ≤0.030 ≤0.035 - ≥270 ≥28 - 180攝氏度
SPCE ≤0.08 ≤0.03 ≤0.40 ≤0.025 ≤0.030 - ≥270 ≥35 - 180攝氏度
SPCC1B ≤0.12 ≤0.05 ≤0.05 ≤0.035 ≤0.035 - - - 85 180攝氏度
SPCC4B 0.08-0.13 ≤0.05 0.35-0.65 ≤0.035 ≤0.035 - - - 65-80 180攝氏度