金属材料硬度对照表

布氏硬度HB洛氏硬度HRA86.686.386.185.885.585.285.084.784.484.183.983.683.383.182.882.582.282.081.781.481.280.980.680.380.179.879.579.379.078.7HRC70.069.569.068.568.067.567.066.566.065.565.0.5.063.563.062.562.061.561.060.560.059.559.058.558.057.557.056.556.055.5维氏硬度HV103710179979759941923906887285684082581079578076675273972671370068867666532631620609布氏硬度HB洛氏硬度HRA78.578.277.977.777.477.176.976.676.376.175.875.575.375.074.774.574.273.973.773.473.272.972.672.472.171.871.671.371.170.8HRC55.0.5.053.553.052.552.051.551.050.550.049.9.048.8.047.7.046.6.045.5.044.4.043.3.042.2.041.1.040.5维氏硬度布氏硬度HVHB599557957056155135345255175095014934878470463494434329423417411405399393388382370365360355350345341336332327323318314310306302298294291287283280276273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HVHB37737236736235135234734233833332932432031631230830430029629222852812782692662632602572251248245242240237234232229227225222220218216214211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HV2742712682261258255252249246243240237234231229226223221218216214211501494488481474468461494424330424418413407401396391385380375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。