瀏覽:211次 2013/10/23
HRC含意是洛式硬度C標(biāo)尺,HRC適用范圍HRC 20--67,相當(dāng)于HB225--650;若硬度于此范圍則用洛氏硬度計(jì)A標(biāo)尺HRA,若硬度低于此范圍則用洛式硬度B標(biāo)尺HRB,布式硬度上限值HB650,不能于此值。
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