黑色金属硬度及强度换算表
黑色金属硬度及强度换算(摘自GB/T1172-1999)页码，1/3
黑色金属硬度及强度换算(摘自GB/T1172-1999)
(表一)
硬度
洛氏
HR 15N —————92.291.991.791.491.090.69.289.889.488.988.487.987.486.886.385.785.284.684.083.582.982.381.781.180.579.979.378.778.177.577.076.475.875.274.774.1
表面洛氏HR 30N —————81.380.679.879.078.177.376.575.674.873.973.172.271.370.469.568.667.766.865.965.064.163.262.361.360.459.558.657.656.755.851.853.953.052.051.150.2
HR 45N —————71.770.669.568.467.366.265.163.962.861.760.559.458.257.155.954.753.652.451.250.149.947.746.545.444.243.041.840.639.438.237.025.934.733.532.331.1
维氏
HB 30D 2———————————————————[***********][***********][***********][1**********]3
布氏
d 10、2d 5、4d 2.5/mm———————————————————2.732.772.812.852.892.932.973.013.053.093.133.173.213.263.303.343.393.433.483.523.563.61
————————————————————[***********][***********][***********][***********][1**********]9
——————————————————[***********][***********][***********][***********][***********]
———————————————[***********][***********][***********][***********][***********][1**********]9
———————————————[***********][***********][***********][***********][***********][1**********]3
—————————————————[***********][***********][***********][***********][***********]943
—————————————————[***********][***********][***********][***********][***********]1966
———————————————[***********][***********][***********][***********][***********][1**********]3
碳钢
铬钢
铬钡钢
铬镍钢
铬钼钢
铬钼镍钢
铬硅锰钢
抗拉强度/MPa
超高强度钢——————————[***********][***********][***********][***********][**************]8—————————
不锈钢
不分钢种
HRC HRA HV [***********][***********][***********][***********][***********][***********][**************]9
70.069.068.067.066.065.064.063.062.061.060.059.058.057.056.055.054.053.052.051.050.049.048.047.046.045.044.043.042.041.040.039.038.037.036.035.034.033.032.031.030.0
86.686.185.585.084.483.983.382.882.281.781.280.680.179.579.078.577.977.476.976.375.875.374.774.273.773.272.672.171.671.170.570.0—————————
————————————————————[***********][***********][***********][***********]1015990966
——————————[***********][***********][***********][***********][***********][***********][1**********]904
29.018.027.026.025.024.023.022.021.020.019.018.017.0
—————————————
73.573.072.471.971.470.870.369.869.368.868.367.867.3
49.248.347.346.445.544.543.642.641.740.739.838.937.9
29.928.727.526.325.123.922.721.520.419.218.016.815.6
[***********][***********]211
[***********][***********]211
3.653.703.743.783.833.873.913.954.004.034.074.114.15
[***********][***********]736
[***********][***********]706
[***********][***********]705
[***********][***********]9772
[***********][***********]726
[1**********]6—————————
[***********][***********]757
—————————————
[***********][***********]03
[***********][***********]724
注：1 表中d 10——钢球为10mm 时压痕直径；d 5——钢球为5mm 时的压痕直径；d 2.5——钢球为2.5mm 时的压痕直径。
2(表二)
硬度
洛氏HRB 100.099.098.097.096.095.094.093.092.091.090.089.088.087.086.085.084.083.082.081.080.079.078.077.076.075.074.073.072.0
HR 15T 91.591.290.990.690.490.189.889.589.389.088.788.488.187.987.687.387.086.886.586.285.985.785.485.184.884.584.384.083.7
表面洛氏HR 30T 81.781.080.479.879.178.577.877.276.675.975.374.674.073.472.772.171.470.870.269.568.968.267.667.066.365.765.164.163.8
HR 45T 71.770.769.668.667.666.565.564.563.462.461.460.359.358.357.256.255.254.153.152.151.050.049.047.946.945.944.843.842.8
维氏HV [***********][***********][***********][***********][**************]
HBS 10D 2——————————————————[***********][**************]
布氏
d 10、2d 5、4d 2.5/mm——————————————————3.003.023.063.093.113.143.163.193.213.243.27
[***********][***********][***********][***********][**************]抗拉强度/MPa
本表不包括低碳钢。
71.070.069.068.067.066.065.064.063.062.061.060.0
83.483.282.982.682.382.181.881.581.280.98.780.4
63.162.561.961.260.659.959.358.758.057.456.756.1
41.740.739.738.637.636.635.534.533.532.431.730.4
[***********][***********]
[***********][***********]
3.293.313.333.353.373.393.403.423.433.453.463.48
[***********][***********]
注：1 本表适用于低碳钢。
2
表中d 10、d 5及d 2.5意义见前表。