Hardness Conversion Chart (mitutoyo) 硬度转换表
.028 (0.71) √√ 20 67 63 62 .030 (0.76) √√√ 60 58 57 .032 (0.81) √√√ 51 52 .034 (0.86) √√√ 43 45 .036 (0.91) √√√ 37 .038 (0.96) √√√ 28 .040 (1.02) √√√ 20 Rockwell Superficial Rockwell Regular...