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用模拟试验的方法研究了用于大截面塑料模具的P20BSCa预硬易切削塑料模具钢的淬透性。结果表明，该钢具有优异的淬透性，经淬火及回火处理后，截面尺寸为600mm的模块心部硬度可达33HRC以上。可以满足预硬硬度为30～35HRC的大型塑料模具的使用要求。
The hardenability of P20BSCa pre-hardened and easy-cut plastic mold steels for large cross-section plastic molds was studied by means of a simulation test. The results show that the steel has excellent hardenability, after quenching and tempering, the core section of the cross section size of 600mm up to 33HRC. Can meet the pre-hard hardness of 30 ~ 35HRC large plastic mold requirements.