HB HV HRC各種硬度換算表

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等硬度對照區(qū)別和換算硬度是衡量材料軟硬程度的一個性能指標。硬度試驗的方法較多，原理也不一樣，測得的硬度值和含義也不完全一樣。最普通的是靜負荷壓入法硬度試驗，即布氏硬度(HB)、洛氏硬度(HRA，HRB，HRC)、維氏硬度(HV)，橡膠塑料邵氏硬度(HA,HD)等硬度其值表示材料外表抵抗堅硬物體壓入的能力。最流行的里氏硬度〔HL〕、肖氏硬度(HS)那么屬于回跳法硬度試驗，其值代表金屬彈性變形功的大小。因此，硬度不是一個單純的物理量，而是反映材料的彈性、塑性、強度和韌性等的一種綜合性能指標。1、鋼材的硬度：金屬硬度(Hardness)的代號為H。按硬度試驗方法的不同，●常規(guī)表示有布氏〔HB〕、洛氏〔HRC〕、維氏〔HV〕、里氏〔HL〕硬度等，其中以HB及HRC較為常用?！馠B應用X圍較廣，HRC適用于外表高硬度材料，如熱處理硬度等。兩者區(qū)別在于硬度計之測頭不同，布氏硬度計之測頭為鋼球，而洛氏硬度計之測頭為金剛石?！馠V-適用于顯微鏡分析。維氏硬度(HV)以120kg以內的載荷和頂角為136°的金剛石方形錐壓入器壓入材料外表，用材料壓痕凹坑的外表積除以載荷值，即為維氏硬度值(HV)?！馠L手提式硬度計，測量方便，利用沖擊球頭沖擊硬度外表后，產生彈跳；利用沖頭在距試樣外表1mm處的回彈速度與沖擊速度的比值計算硬度，公式：里氏硬度HL=1000×VB〔回彈速度〕/VA〔沖擊速度〕?！衲壳白畛Ｓ玫谋銛y式里氏硬度計用里氏〔HL〕測量后可以轉化為：布氏〔HB〕、洛氏〔HRC〕、維氏〔HV〕、肖氏〔HS〕硬度?；蛴美锸显碇苯佑貌际稀睭B〕、洛氏〔HRC〕、維氏〔HV〕、里氏〔HL〕、肖氏〔HS〕測量硬度值。時代公司生產的TH系列里氏硬度計就有此功能，是傳統(tǒng)臺式硬度機的有益補充！〞〔詳細情況請點擊?里氏硬度計TH140/TH160/HLN-11A/HS141便攜式系列?〕洛氏硬度(HRC)一般用于硬度較高的材料，如熱處理后的硬度等等。2、HB-布氏硬度：一般用于材料較軟的時候，如有色金屬、熱處理之前或退火后的鋼鐵。布式硬度(HB)是以一定大小的試驗載荷，將一定直徑的淬硬鋼球或硬質合金球壓入被測金屬外表，保持規(guī)定時間，然后卸荷，測量被測外表壓痕直徑。布式硬度值是載荷除以壓痕球形外表積所得的商。一般為：以一定的載荷(一般3000kg)把一定大小(直徑一般為10mm)的淬硬鋼球壓入材料外表，保持一段時間，去載后，負荷與其壓痕面積之比值，即為布氏硬度值(HB)，單位為公斤力/mm2(N/mm2)。〔關于布式硬度(HB)詳細情況請點擊?布氏硬度機(計)HB-3000B/TH600?〕3、洛式硬度是以壓痕塑性變形深度來確定硬度值指標。以0.002毫米作為一個硬度單位。當HB>450或者試樣過小時，不能采用布氏硬度試驗而改用洛氏硬度計量。它是用一個頂角120°的金剛石圓錐體或直徑為1.59、3.18mm的鋼球，在一定載荷下壓入被測材料外表，由壓痕的深度求出材料的硬度。根據試驗材料硬度的不同，分三種不同的標度來表示：HRA：是采用60kg載荷和鉆石錐壓入器求得的硬度，用于硬度極高的材料(如硬質合金等)。HRB：是采用100kg載荷和直徑1.58mm淬硬的鋼球，求得的硬度，用于硬度較低的材料(如退火鋼、鑄鐵等)。HRC：是采用150kg載荷和鉆石錐壓入器求得的硬度，用于硬度很高的材料(如淬火鋼等)。另外：1.HRC含意是洛式硬度C標尺，2.HRC和HB在生產中的應用都很廣泛3.HRC適用X圍HRC20－－67，相當于HB225－－650假設硬度高于此X圍那么用洛式硬度A標尺HRA。假設硬度低于此X圍那么用洛式硬度B標尺HRB。布式硬度上限值HB650,不能高于此值。4.洛氏硬度計C標尺之壓頭為頂角120度的金剛石圓錐，試驗載荷為一確定值，中國標準是150公斤力。布氏硬度計之壓頭為淬硬鋼球〔HBS)或硬質合金球〔HBW〕，試驗載荷隨球直徑不同而不同，從3000到31.25公斤力。5.洛式硬度壓痕很小，測量值有局部性，須測數點求平均值，適用成品和薄片，歸于無損檢測一類。布式硬度壓痕較大，測量值準，不適用成品和薄片，一般不歸于無損檢測一類。6.洛式硬度的硬度值是一無名數，沒有單位?！惨虼肆晳T稱洛式硬度為多少度是不正確的?！巢际接捕鹊挠捕戎涤袉挝唬液涂估瓘姸扔幸欢ǖ慕脐P系。7.洛式硬度直接在表盤上顯示、也可以數字顯示，操作方便，快捷直觀，適用于大量生產中。布式硬度需要用顯微鏡測量壓痕直徑，然后查表或計算，操作較繁瑣。8.在一定條件下，HB與HRC可以查表互換。其心算公式可大概記為：1HRC≈1/10HB?！碴P于洛氏硬度機詳細情況請點擊?洛氏硬度機(計)HR-150A/TH300/TH500/TH320/TH301/TH310系列?〕各種硬度轉換表里氏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維氏HV維氏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維氏HV維氏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維氏HV維氏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維氏HV維氏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