Approximate Hardness Conversion Numbers for Steels 
熱處理硬度換算表 
Vickers Rockwell Rockwell Super-fical ShoreVickers 
維式洛式
HVHB HRAHRBHRCHRD15-N30-N45-NHSHV
940-----85.6-----6876.993.284.475.498940
920-----85.3-----67.576.5938474.396.8920
900-----85-----6776.192.983.674.295.6900
880-----84.7-----66.475.792.783.173.694.3880
860-----84.4-----65.975.392.582.773.193.1860
840-----84.1-----65.374.892.382.272.291.7840
820-----83.8-----64.774.392.181.771.890.4820
800-----83.4-----6473.891.881.17189800
780-----83-----63.373.391.580.470.287.6780
760-----82.6-----62.572.691.279.769.486.2760
740-----82.2-----61.872.19179.168.684.8740
720-----81.8-----6171.590.778.467.783.3720
700-----81.3-----60.170.890.377.666.781.8700
690-----81.1-----59.770.590.177.266.281690
680-----80.8-----59.270.189.876.865.780.2680
670-----80.6-----58.869.889.776.465.379.4670
660-----80.3-----28.369.489.575.964.778.6660
650-----80-----57.86989.275.564.177.8650
640-----79.8-----57.368.78975.163.577640
630-----79.5-----56.868.388.874.66376.2630
620-----79.2-----56.367.988.574.262.475.4620
610-----78.9-----55.767.588.273.661.774.5610
600-----78.6-----55.2678873.261.273.7600
590-----78.4-----54.766.787.872.760.572.8590
580-----78-----54.166.287.572.159.972580
570-----77.8-----53.665.887.271.759.371.1570
560-----77.4-----5365.486.971.258.670.2560
55051777-----52.364.886.670.557.869.3550
54050876.7-----51.764.486.3705768.4540
53049876.4-----51.163.98669.556.267.5530
52048876.1-----50.563.585.76955.666.6520
51047975.7-----49.862.985.468.354.765.6510
50047075.3-----49.162.28567.753.964.7500
49046174.9-----48.461.684.767.153.163.7490
48045174.5-----47.761.384.366.452.262.8480
47044274.1-----46.960.783.965.751.361.8470
46043473.6-----46.160.183.664.950.460.8460
45042573.3-----45.359.483.264.349.459.8450
44041572.8-----44.558.882.863.548.458.8440
43040572.3-----43.658.282.362.747.457.8430
42039771.8-----42.757.581.861.946.456.7420
41038871.4-----41.856.881.461.145.355.7410
40037970.8-----40.8568160.244.154.6400
39036970.3-----39.855.280.359.342.953.6390
38036069.811038.854.479.858.441.752.5380
37035069.2-----37.753.679.257.440.451.4370
36034168.710936.652.878.656.439.150.3360
35033168.1-----35.551.97855.437.849.2350
34032267.610834.451.177.454.436.548.1340
33031367-----33.350.276.853.635.246.9330
32030366.410732.249.476.352.333.945.7320
31029465.8-----3148.475.651.332.544.6310
30028465.2105.529.847.574.950.231.143.4300
29528064.8-----29.247.174.649.730.442.8295
29027564.5104.528.546.574.24929.542.2290
28527064.2-----27.84673.848.428.741.6285
28026563.8103.527.145.373.447.827.941280
27526163.5-----26.444.97347.227.140.4275
27025663.110225.644.372.646.426.239.7270
26525262.7-----24.843.772.145.725.239.1265
26024762.41012443.171.64524.338.5260
25524362-----23.142.271.144.223.237.9255
25023861.699.522.241.770.643.422.237.2250
24523361.2-----21.341.170.142.521.136.6245
24022860.798.120.340.369.641.719.936240
230219-----96.718--------------------34.7230
220209-----9515.7--------------------33.4220
210200-----93.413.4--------------------32210
200190-----91.511--------------------30.7200
190181-----89.58.5--------------------29.4190
180171-----87.16--------------------28180
170162-----853--------------------26.6170
160152-----81.70--------------------25.2160
150143-----78.7-------------------------23.8150
140133-----75-------------------------22.3140
130124-----71.2-------------------------20.8130
120114-----66.7-------------------------19.1120
110105-----62.3-------------------------17.6110
10095-----58.2-------------------------16.1100