鋼種之熱處理溫度與硬度對照表鋼種構造用碳鋼構造用合金鋼不銹鋼鋼種記號S30C S35C S40C S45C S50C S55C SCr435 SCr440 SCM432 SCM435 SCM44 SNC631 SNC836 SNCM439 ...
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