洛氏硬度修正值.pdf

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1、GB230.1-2004ISO6508-1：1999用金钢石圆锥压头试验（A、C和D标尺）HRA588.420-88HRA洛氏硬度洛氏硬度修正值曲率半径/mmHRB98020HRB-100HRB读数356.589.511121619HRC147120HRC-70HRC202.521.51.5112532.521.51111.6302.521.51.5110.51.535321.51.5110.50.51.4402.521.51110.50.51.345321.51110.50.50.51.2502.521.511

2、0.50.50.50.51.15521.5110.50.50.50.501601.5110.50.50.50.5000.9651.5110.50.50.50.5000.870110.50.50.50.50.5000.77510.50.50.50.50.50000.6800.50.50.50.50.500000.5850.50.50.50000000.4900.5000000000.3注：大于3HRA、3HRC和3HRD的修正值太大，不在表中规定0.22030405060708090HRDHRB最小厚度20时3.3

3、/30时3/40时2.7/50时2.4/60时2.1/70时1.8/80时1.5/90时1.2HRCHRA洛氏硬度