材料硬度换算表

布氏硬度HB洛氏硬度HRA86.686.386.185.885.585.285.084.784.484.183.983.683.383.182.882.582.282.081.781.481.280.980.680.380.179.879.579.379.078.7HRC70.069.569.068.568.067.567.066.566.065.565.064.564.063.563.062.562.061.561.060.560.059.559.058.558.057.557.056.556.055.5维氏硬度HV10371017997978959941923906889872856840825810795780766752739726713700688676664653642631620609布氏硬度HB洛氏硬度HRA78.578.277.977.777.477.176.976.676.376.175.875.575.375.074.774.574.273.973.773.473.272.972.672.472.171.871.671.371.170.8HRC55.054.554.053.553.052.552.051.551.050.550.049.549.048.548.047.547.046.546.045.545.044.544.043.543.042.542.041.541.040.5维氏硬度布氏硬度HVHB599589579570561551543534525517509501493485478470463456449443436429423417411405399393388382370365360355350345341336332327323318314310306302298294291287283280276273洛氏硬度HRA70.570.370.0HRC40.039.539.038.538.037.537.036.536.035.535.034.534.033.533.032.532.031.531.030.530.029.529.028.5维氏硬度布氏硬度HVHB377372367362351352347342338333329324320316312308304300296292289285281278269266263260257254251248245242240237234232229227225222220218216214211洛氏硬度HRAHRC28.027.527.026.526.025.525.024.524.023.523.022.522.021.521.020.520.019.519.018.518.017.517.0维氏硬度HV274271268264261258255252249246243240237234231229226223221218216214211501494488481474468461455449442436430424418413407401396391385380375注:1.布氏硬度:主要用来测定铸件、锻件、有色金属制件、热轧坯料及退火件的硬度,测定范围≯HB450。 2.洛氏硬度:HRA主要用于高硬度试件,测定硬度高于HRC67以上的材料和表面硬度,如硬质合金、氮化钢等，测定范围HRA>70。HRC主要用于钢制件(如碳钢、工具钢、合金钢等）淬火或回火后的硬度测定,测定范围HRC20~67。 3.维氏硬度:用来测定薄件和钢板制件的硬度,也可用来测定渗碳、氰化、氮化等表面硬化制件的硬度。