硬度和抗拉強度的關系對照表

1、一、硬度與抗拉強度的關系當鋼的硬度在500HB以下時，其抗拉強度與硬度成正比，kg/m m2 （出） = 1/3 X HB=3.2 X HRC=2.1 X HS,但上述關系式也并非在什么場合都成立，從熱處理方面說，回火溫度低時，kg/m m與HRC時的相關關系便可能被破壞， 鋼的回火溫度，硬度和抗拉強度的關系如圖所示。從300%：T/七Q由此圖可見硬度隨回火溫度的升高而下降，但在淬火狀態(tài)以及300 C以下低溫回火時，硬度與抗拉強度的關系難以成立。當回火溫度在300 C左右時，kg/mm與HRC具有相關關系，即硬度高，抗拉強度就高；硬度低，抗拉強度就低。 在低溫回火狀態(tài)欲求出 kg/m m值是很

2、困難的，因為此時抗拉強度值分布很離 散。由于低溫回火件的kg/m m?不穩(wěn)定而不能確定，故在日本工業(yè)標準（JIS） 中也是通試驗來測定400 C以上溫度回火件的拉伸特性（也有300 C回火工件）c 換言之是只對調質件（淬火+400 C回火）進行拉伸試驗。在工業(yè)上只是在要求 抗旋轉彎曲疲勞和抗磨損時才使用低溫回火件。高頻淬火和滲碳淬火即為此適 用例。受拉應力的零件不采用低溫回火。不過在低碳鋼中，但淬火M能發(fā)生自回火（故Ms點高）時，亦有在淬火狀態(tài)下使用者。低碳鋼的板條馬氏體組織結構 自回火，正可在工業(yè)上應用，但此時必須考慮淬透性和質量效應（必要時應添加B、Cr、Mn等金屬元素）、鋼材抗拉強度與維

3、氏硬度、布氏硬度、洛氏硬度的對照表維氏布氏克羅普洛氏標尺肖氏拉伸強度HVHBHKHRAHRBHRCHSKg/m m252849655876.35167.626451348154275.95066.225549846952675.24964.724648445551074.74863.423847144349574.14762.122945843248073.64660.822144642146673.14559.621543440945272.54458.420842340043872.04357.220141239042671.54256.119440238141470.94155.0188

4、39237140270.44053.918238236239169.93952.917737235338069.43851.817136334437068.93750.716635433636068.43649.716134532735167.93548.715633631934267.43447.715232731133466.83346.614931830132666.33245.614631029431865.83144.614130228631165.33043.613829427930464.62942.713528627129764.32841.713127926429063.82

5、740.812827225828463.32639.912526625327862.82539.212326024727262.42438.411925424326662.01002337.711724823726161.599.02236.911524323125661.098.52136.311223822625160.597.82035.611023021924360.296.734.610922221223659.596.333.510421320322958.996.032.310220419422058.395.031.110019618721257.694.030.0981881

6、7920457.093.09418017119656.4929217316518955.89190如果您要查的抗拉強度1000N/mm2，或者維氏硬度310HV ,或者布氏硬度300HB，或者洛氏硬度32HRC，請查本表抗拉強度維氏硬度HV布氏硬度HB洛氏硬度HRC2508076.02708580.72859085.23059590.232010095.033510599.8350110105370115109380120114400125119415130124430135128450140133465145138480150143-49015514751016015253016515654

7、517016256017516657518017159518517661019018162519518564020019066020519567521019969021520470522020972022521474023021975523522377024022820 378524523321.380025023822.282025524223.183526024724.085026525224 886527025725.688027526126 490028026627.191528527127 893029027628 595029528029 296530028529 89953102

8、9531.0103032030432.2106033031433.3109534032334.4112535033335.5111536034236.6119037035237.7122038036138.8125539037139.8129040038040.8132041039041.8135042039942.7138543040943.6142044041844.5145545042845.3148546043746.1152047044746.91555480(456)47.71595490(466)48.41630500(475)49.11665510(485)49.81700520(494)50.51740530(504)51.11775540(513)51.71810550(523)52.31845560(532)53.01880570(542)53.61920580(551)54.11955590(561)54.71995600(570)55.22030610(580)55.72070620(589)56.32105630(599)56.82145640(608)57.