BS970 A36,BS970A36 钢材硬度单位
SNCM420 SNCM431 SNCM439 SNCM447 SNCM616 SNCM625 SNCM630 SNCM815 SMn420H SMn433H SMn438H SMn443H SMnC420H SMnC443H SCr415H SCr420H SCr430H SCr435H SCr440H SCM415H SCM418H SCM420H SCM425H SCM435H SCM440H SCM445H SCM822H SNC415H SNC631H SNC815H SNCM220H SNCM240H
用于塑料模模座/垫板.抛旋光性要求不高塑料和橡胶模塑料挤压模结构零件.
特点:耐腐蚀性佳,易加工,淬火性
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