HB HV HRC各种硬度换算表

硬度換算公式:1.肖氏硬度(HS)=勃式硬度(BHN)/10+122.肖式硬度(HS)=洛式硬度(HRC)+153.勃式硬度(BHN)=洛克式硬度(HV)4.洛式硬度(HRC)=勃式硬度(BHN)/10-3洛氏硬度HRC和布氏硬度HB等硬度对照区别和换算硬度是衡量材料软硬程度的一个性能指标。硬度试验的方法较多，原理也不一样，测得的硬度值和含义也不完全一样。最普通的是静负荷压入法硬度试验，即布氏硬度(HB)、洛氏硬度(HRA，HRB，HRC)、维氏硬度(HV)，橡胶塑料邵氏硬度(HA,HD)等硬度其值表示材料外表抵抗坚硬物体压入的能力。最流行的里氏硬度〔HL〕、肖氏硬度(HS)那么属于回跳法硬度试验，其值代表金属弹性变形功的大小。因此，硬度不是一个单纯的物理量，而是反映材料的弹性、塑性、强度和韧性等的一种综合性能指标。1、钢材的硬度：金属硬度(Hardness)的代号为H。按硬度试验方法的不同，●常规表示有布氏〔HB〕、洛氏〔HRC〕、维氏〔HV〕、里氏〔HL〕硬度等，其中以HB及HRC较为常用。●HB应用X围较广，HRC适用于外表高硬度材料，如热处理硬度等。两者区别在于硬度计之测头不同，布氏硬度计之测头为钢球，而洛氏硬度计之测头为金刚石。●HV-适用于显微镜分析。维氏硬度(HV)以120kg以内的载荷和顶角为136°的金刚石方形锥压入器压入材料外表，用材料压痕凹坑的外表积除以载荷值，即为维氏硬度值(HV)。●HL手提式硬度计，测量方便，利用冲击球头冲击硬度外表后，产生弹跳；利用冲头在距试样外表1mm处的回弹速度与冲击速度的比值计算硬度，公式：里氏硬度HL=1000×VB〔回弹速度〕/VA〔冲击速度〕。●目前最常用的便携式里氏硬度计用里氏〔HL〕测量后可以转化为：布氏〔HB〕、洛氏〔HRC〕、维氏〔HV〕、肖氏〔HS〕硬度。或用里氏原理直接用布氏〔HB〕、洛氏〔HRC〕、维氏〔HV〕、里氏〔HL〕、肖氏〔HS〕测量硬度值。时代公司生产的TH系列里氏硬度计就有此功能，是传统台式硬度机的有益补充！〞〔详细情况请点击?里氏硬度计TH140/TH160/HLN-11A/HS141便携式系列?〕洛氏硬度(HRC)一般用于硬度较高的材料，如热处理后的硬度等等。2、HB-布氏硬度：一般用于材料较软的时候，如有色金属、热处理之前或退火后的钢铁。布式硬度(HB)是以一定大小的试验载荷，将一定直径的淬硬钢球或硬质合金球压入被测金属外表，保持规定时间，然后卸荷，测量被测外表压痕直径。布式硬度值是载荷除以压痕球形外表积所得的商。一般为：以一定的载荷(一般3000kg)把一定大小(直径一般为10mm)的淬硬钢球压入材料外表，保持一段时间，去载后，负荷与其压痕面积之比值，即为布氏硬度值(HB)，单位为公斤力/mm2(N/mm2)。〔关于布式硬度(HB)详细情况请点击?布氏硬度机(计)HB-3000B/TH600?〕3、洛式硬度是以压痕塑性变形深度来确定硬度值指标。以0.002毫米作为一个硬度单位。当HB>450或者试样过小时，不能采用布氏硬度试验而改用洛氏硬度计量。它是用一个顶角120°的金刚石圆锥体或直径为1.59、3.18mm的钢球，在一定载荷下压入被测材料外表，由压痕的深度求出材料的硬度。根据试验材料硬度的不同，分三种不同的标度来表示：HRA：是采用60kg载荷和钻石锥压入器求得的硬度，用于硬度极高的材料(如硬质合金等)。HRB：是采用100kg载荷和直径1.58mm淬硬的钢球，求得的硬度，用于硬度较低的材料(如退火钢、铸铁等)。HRC：是采用150kg载荷和钻石锥压入器求得的硬度，用于硬度很高的材料(如淬火钢等)。另外：1.HRC含意是洛式硬度C标尺，2.HRC和HB在生产中的应用都很广泛3.HRC适用X围HRC20－－67，相当于HB225－－650假设硬度高于此X围那么用洛式硬度A标尺HRA。假设硬度低于此X围那么用洛式硬度B标尺HRB。布式硬度上限值HB650,不能高于此值。4.洛氏硬度计C标尺之压头为顶角120度的金刚石圆锥，试验载荷为一确定值，中国标准是150公斤力。布氏硬度计之压头为淬硬钢球〔HBS)或硬质合金球〔HBW〕，试验载荷随球直径不同而不同，从3000到31.25公斤力。5.洛式硬度压痕很小，测量值有局部性，须测数点求平均值，适用成品和薄片，归于无损检测一类。布式硬度压痕较大，测量值准，不适用成品和薄片，一般不归于无损检测一类。6.洛式硬度的硬度值是一无名数，没有单位。〔因此习惯称洛式硬度为多少度是不正确的。〕布式硬度的硬度值有单位，且和抗拉强度有一定的近似关系。7.洛式硬度直接在表盘上显示、也可以数字显示，操作方便，快捷直观，适用于大量生产中。布式硬度需要用显微镜测量压痕直径，然后查表或计算，操作较繁琐。8.在一定条件下，HB与HRC可以查表互换。其心算公式可大概记为：1HRC≈1/10HB。〔关于洛氏硬度机详细情况请点击?洛氏硬度机(计)HR-150A/TH300/TH500/TH320/TH301/TH310系列?〕各种硬度转换表里氏HLD洛氏HRC洛氏HRB布氏HB[1]布氏HB[2]肖氏HSD里氏HLD洛氏HRC洛氏HRB布氏HB[1]布氏HB[2]肖氏HSD维氏HV维氏HV300302304306308310312314316318320322324326328330332838485858687878889909091929394949559659860060260460660861061261461661862062262462662833.934.234.534.835.135.435.735.936.236.536.837.137.437.637.938.238.532232532833033333633834134434634935235535736036336631431631932232432733033233533834034334634935135435731531832032332532833133333633934134434634935235535746.346.646.947.247.547.848.248.548.849.149.449.750.150.450.75151.3334336969763063238.73936937236036336036351.752338340342344346348350352354989963463663864064264464664865039.339.639.840.140.440.740.941.241.537537738038338638939239539836636937137437738038338638936636937137437738038338638952.352.652.953.353.653.954.254.654.910010110110210310410559.660.361里氏HLD356358360362364366368370372374洛氏HRC洛氏HRB61.762.463.163.864.565.165.866.467布氏HB[1]布氏HB[2]肖氏HSD里氏HLD652654656658660662664666668670洛氏HRC41.74242.342.642.843.143.443.643.944.1洛氏HRB布氏HB[1]392395398401404407410布氏HB[2]392395398401404407410肖氏HSD55.255.655.856.256.556.957.257.557.958.2维氏HV维氏HV10610710810911011111211411511640140440741141441742042342642941341742041341742067.737637838038238438638839039239439639840040240440640841041241468.368.969.570.170.671.271.872.372.973.47474.57575.57676.57777.57811711811912012112312412512612712913013113313413513613813914167267467667868068268468668869069269469669870070270470670871044.444.744.945.245.545.74646.246.546.84747.347.547.84848.348.648.849.149.343343643944244644945245645946346646947347648048348749149449842342642943243543944244544845145545846146546847147447848148542342642943243543944244544845145545846146546847147447848148558.558.959.259.559.960.260.560.961.261.661.962.262.662.963.363.66414214414514714915015215364.364.66578.4里氏HLD洛氏HRC洛氏HRB布氏HB[1]布氏HB[2]肖氏HSD里氏HLD洛氏HRC洛氏HRB布氏HB[1]布氏HB[2]肖氏HSD维氏HV维氏HV41641842042242442642843043243443643844044244444644845045278.979.379.880.280.781.181.581.982.482.883.283.68484.484.885.185.585.986.314214314514614814915115215415515715816016116316416616816915515615715916016216316516616816917117217417517617817918171271471671872072272472672873073273473673874074274474674849.649.850.150.350.650.851.151.351.651.852.152.352.652.853.153.353.653.854.150150550951351652052452853253553954354755155555956356857248849149549850250550851251551952252652953353654054354755148849149549850250550851251551952252652953353654054354755165.365.76614014114314414514714815015115315415615715916016216466.466.767.167.467.868.268.568.969.269.669.970.370.77171.471.845445645846046246446646847047247486.68717117317417617817918118318518618816516716817017217317517717818018218218418518718819019119319419619775075275475675876076276476676877054.354.554.85555.355.555.75657658058458959359760260661061561955455856156556957257658058358759155455856156556957257658058358759172.172.572.973.273.67474.374.775.175.575.887.487.788.188.588.889.289.589.990.326.426.72727.327.627.928.228.556.256.556.7里氏HLD476478480482484486488490洛氏HRC洛氏HRB90.69191.391.792.192.492.893.1布氏HB[1]184185187189191192194布氏HB[2]198200202203205206208肖氏HSD28.829.129.429.73030.330.630.9里氏HLD772774776778780782784786洛氏HRC56.957.257.457.657.958.158.358.6洛氏HRB布氏HB[1]594598602605609613617布氏HB[2]594598602605609613617肖氏HSD76.276.67777.477.778.178.578.9维氏HV维氏HV19019219419519719920120362462863363864264765265719620962062049249449649850050250450650851051251451651852052252452652853093.593.994.394.69595.495.896.296.69797.497.998.398.799.299.620520720921121321521721922122322522722923123323523723924124419820020220420520720921121321521721922122322522722923123423621121221421521721922022222422522722923023223423523723924124231.231.531.73278879079279479679880080280480680881081281481681882082282482658.85966266667167668168669169770270771271872372873473974575075676262462863263563964364765162462863263563964364765179.379.780.180.580.981.281.68282.482.883.283.784.184.584.985.385.786.186.58759.259.559.759.960.160.460.660.86161.261.461.761.962.162.362.562.762.932.232.532.833.133.333.633.934.234.434.73535.335.635.836.136.419.820.220.62121.321.72222.422.823.123.553253423.824.124624823824024424636.73782883063.163.376877387.487.8里氏HLD536538540542544546548550552554556558洛氏HRC24.524.825.225.525.826.226.526.827.127.527.828.1洛氏HRB布氏HB[1]242244246249251253255258262262265267布氏HB[2]248250252254256258259261263265268270肖氏HSD37.337.637.938.138.438.73939.339.639.940.240.5里氏HLD832834836838840842844846848850852854洛氏HRC63.563.763.964.164.364.564.764.965.165.365.465