Tensile strength N / mm2 Vickers Brinell hardness Rockwell hardness Tensile strength N / mm2 Vickers Brinell hardness Rockwell hardness RmHVHBHRCRmHVHB HRC2508076112535033335.52708580.7111536034236.62859085.2119037035237.73059590.2122038036138.832010095125539037139.833510599.8129040038040.8350110105132041039041.8370115109135042039942.7380120114138543040943.6400125119142044041844.5415130124145545042845.3430135128148546043746.1450140133152047044746.9465145138155548045647480150143159549046648.4490155147163050047549 .1510160152166551048549.8530165156170052049450.5545170162174053050451.1560175166177554051351.7575180171181055052352.3595185176184556053253610190181188057054253.6625195185192058055154.1640200190195559056154.7660205195199560057055.2675210199203061058055.7690215204207062058956.3705220209210563059956.8720225214214564060857.3740230219218065061857.875523522366058.377024022820.367058.878524523321.368059.280025023822.269059.782025524223.170060.1835260247247206185026525224.874061.886527025725.676062.588027526126.478063.390028026627.18006491528527127.882064.793029027628.58406 5.395029528029.286065.996530028529.888066.49953102953190067103032030432.292067.5106033031433.394068109534032334.4* HRBSt12=65St13=55St14=50 Hardness test is the simplest and most feasible test method in mechanical performance test. In order to replace certain mechanical performance tests with hardness tests, a more accurate conversion relationship between hardness and strength is required in production. Practice has proved that between various hardness values of metal materials, there is an approximate corresponding relationship between the hardness value and the strength value. Because the hardness value is determined by the initial plastic deformation resistance and the continued plastic deformation resistance, the higher the strength of the material, the higher the plastic deformation resistance and the higher the hardness value.
Link to this article：Comparison table of tensile strength and hardness
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