钢的临界温度参考值

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1、钢的临界温度参考值第 7 版）东北特殊钢集团徐效谦整理钢的临界温度参考值（第6版）单位：。C牌号AcAcArArMs碳素结构钢087328907008544801073087568085515735863685840450207358556808652573584068082438030732813677796380357248026807743604072479068076034045725770690720336507257606907213005572777469075529060727766690743265657277526967302657073073769572724075725

2、740690727230807257306907272308572373769069522015Mn73586368584016Mn73685068283541020Mn73585468283542025Mn73583068080030Mn73481267579635535Mn73080068077040Mn726790689768Y40Mn73180728045Mn72677068976850Mn72076066032060Mn72776568974128065Mn72676568974127070Mn723740680合金结构钢10Mn272083062071020Mn2725840610

3、74040030Mn271880462772136035Mn271379363071032540Mn271376662770432045Mn271176562670432050Mn271076059668032008Mn2Si735905300牌号AqAc3Ar1Ar3Ms15Mn2SiCrMo72585538045MnSiV73580564271829518MnMoNb73685064675637020MnMo73083968572938030MnMo71581538MnMo72082045MnMo72579040030Mn2MoWA72084533035MnMoWV74039045MnMo

4、V72779124018MnMoNb76385064675615MnNi70785820MnNiCu70580539015MnNiMo71485420MnNiMo68584542015MnTiRE73486561577939009MnVRE64080073032012MnV73486561577915MnV72085063578020MnV73085363075041525Mn2V72483962071036535Mn2V71577032042Mn2V72577031045Mn2V72577031014MnMoV71072788090856166576380014MnVTiRE72588520

5、SiMn73284027SiMn75088075035535SiMn73579569033040SiMn76081529042SiMn74080064571533044Mn2Si73081028550SiMn71079763670330527Si2Mn2Mo74582034032Si2Mn2MoA(防弹钢)72789162077431515SiMn3MoA68086032739629015SiMn3MoWV(A)68583034541536020SiMn2MoV727*877*640816330*25SiMn2MoV727*866*640785319*30SiMn2MoVA7258456307

6、2531030Si2Mn2MoWV73979831035SiMn2MoV735780306牌号Ac】Ac3Ar1Ar3Ms37SiMn2MoV72982331437SiMn2MoWV72083535051029040SiMn2MoWV72283629042SiMnMoV75587029535B73080269179140B73079069072745B72577069072028050B(A)74079067071928060B74074527015MnB72084741020Mn2B73085361373638030Mn2B72678640MnB73078065070032540MnBRE7

7、2580534045MnB72778060MnB71074028012MoVWBSiRE83594080488014MnMoVBRE75790070077320MnMoB74085069075030Mn2MoB73480030Mn2MoTiB(A)73381464069840MnMoB72480565273720MnTiB(RE)71584362579539520Mn2TiB70887060570525MnTiBRE70881060570539115MnVB73084063577043020MnVB72084063577043540MnVB73077463968140MnWB736800630

8、69532020SiMnVB72686669977922SiMnMoWTiB74486240CrB74177740CrMnB72978567635018CrMnMoB74084020CrMnMoVB85067578040CrMnMoVBA73479222CrMnWMoTiB74486245051326710CrNiMoVB72487612Cr2MoWVTiB82084595098073074083085542012Cr3MoVSiTiB84095837415CrMoVB75689618CrMn2MoBA741854320牌号Ac】Ac3Ar1Ar3Ms18Cr2Mn2MoB74184018Cr

9、2Mn2MoTiB77086020Cr1Mo1VNbB82790979386225CrMnMoTiB76585165375640330Cr2MnMoB72481515Cr76683870279920Cr76583670279939030Cr77581067035535Cr74579567036038CrA74078069373035030CrA178086536038CrA176088567574036040Cr74380569373035545Cr74579066069335550Cr73578066069325060Cr74076045Cr378082033015CrMn750845690

10、40020CrMn76583570079836040CrMn74077569035050CrMn74078530035CrMn273077563068030050CrMn273076029018CrMnNiMo73079549069038020CrMnNiMo72080040040CrMnNiMo39078029030CrMnMoTiA75583035035CrMnMoWV73082049032030CrMn2MoNb76540130535CrMn2MoNb72578032020CrMnSi(A)75584069020Cr2Mn2SiMo(A)72583561570030525CrMnSi(A

11、)76088068030530CrMnSi(A)76083067070536035CrMnSi(A)77583070075533040CrMnSiMoVA78083028840CrMnSiNiMo69580033045CrMnSi(A)79088029550CrMnSiMo79081527515CrMn2SiMoA73280538947836014CrMnSiNi2MoA72480560769036430CrMnSiNi2A（超高强钢）750760805830310320牌号Ac】AC3AriAr3Ms18CrMnTi73082069036520CrMnTi74082568073036030C

12、rMnTi76579066074040CrMnTi76582064068031025CrMnV73582042035CrSi75583071534038CrSi76381068075533040CrSi76081571532516CrSiNi745*845*390*30CrSiMo78086035040CrSi2Ni2MoA74880229016Mo73587590061083042020Mo726*845*420*30Mo724*825*390*12CrMo72088069579012Cr1Mo79090038015CrMo74584569579043520CrMo7458405047463

13、8025CrMo75083066574536530CrMo75780769376334535CrMo75580069575032038CrMo76078032042CrMo73078069031045CrMo73080031050CrMo72576029025Cr3Mo77083536030Cr3MoA（渗碳、渗氮钢）76581033538CrMoAIA （渗碳、渗氮钢）76088567574036015CrMnMo71083062074020CrMnMo71083062074024930CrMnMo73079538540CrMnMo73277464024620Cr2Mn2MoA7618286

14、5573531030CrMnMoTiA75583035030CrMnWMoNbV72082551535512CrMoV79090077486512CrlMoV77480388291476178783089540012CrlMo1V79593015CrMnMoVA77087067478037617CrMo1V78380388592274178581183820Cr1Mo1VNbB82790979386220CrMoWV800930330牌号AqAc3Ar1Ar3Ms20Cr3MoWVA82093069079033024CrMoV79084068079025Cr2MoV77084069078034

15、025Cr2MolVA78087070079030Cr2MoV78183371174733032Cr3MoVA（渗碳、氮钢）79583531035CrMoVA75583560035635 Cr1Mo2V77089527038 Cr2Mo2VA（超高强钢）78085032045CrMoV75083032055CrMoV75579068071526530Ni69081036540Ni71577033050Ni72575532015NiMo72580065075033010Ni271082042512Ni368581045025Ni369076034030Ni367075031035Ni367075

16、031040Ni366574031060Ni465072010Ni561577513Ni561076535040Ni565071036050Ni565024015NiMo72580065075033012CrNi71583067020CrNi72080068079041040CrNi73077066070230545CrNi72577568031050CrNi72577068030012CrNi2A73279467176339512CrNi3A（渗碳、渗氮钢）71082066038020CrNi3A70076050063034030CrNi3A69978065032037CrNi3A71077

17、064028018CrNi4A（渗碳、渗氮钢）70578057067036020Cr2Ni2V72079539012Cr2Ni4A （渗碳、渗氮钢）67078060567539020Cr2Ni4A68577558563030535Cr2Ni4A685760621649320牌号Ac1Ac3Ar1Ar3Ms40Cr2Ni468075024020CrNiMo72581039630CrNiMo73077534035CrNiMo73081034040CrNiMoA72079068032017CrNi2Mo69081030CrNi2Mo69578535035CrNi2Mo69578031040CrNi2

18、Mo68077530012CrNi3Mo71080038516CrNi3MoA （渗碳、氮钢）69577032025CrNi3MoAl74078029030CrNi3Mo68077031035CrNi3Mo70576031012CrNi4Mo69079037030CrNi4MoA70074032535CrNi4Mo70075027035Cr2NiMo73078032030Cr2Ni2Mo74078035035Cr2Ni2Mo75079035512Cr2Ni3Mo69078535Cr2Ni3Mo73077039512Cr2Ni4Mo66077037018Cr2Ni4Mo70081037020Cr

19、2Ni4Mo71582039035Cr2Ni4MoA （超高强钢）72076520045CrNiMoVA72079065027530CrNi2MoVA72578064032025CrNi3MoV68080033030CrNi3MoV74079032035CrNi3MoV72578032032CrNi2MoTiA(防弹钢)72577431815CrV75587077043520CrV76684070478243530CrV76582035540CrV75579070074534045CrV74078074631550CrVA75278068874630035Cr2V76085031035CrW7

20、5081037018CrNiWA69580031030CrNiWA720*800*350*牌号AqAc3 (Accm)Ar1Ar3(Arcm)Ms30CrNi2WVA706*785*320*18Cr2Ni4WA（渗碳、氮钢）69581035040031025Cr2Ni4WA68577030029035Cr2Ni4W66076030016Co14Ni10Cr2MoE60080031032012WMoVSiRE835940804880380非调质钢LFIOMnSiTi795862696LF10Mn2VTiB654840623714405LF20Mn2V715845394GF3OMn2SiV7207

21、98608702GF32Mn2SiV720798343YF35V715800350YF35MnV708798351YF35MnVN735818639731296F40MnV746796667755YF40MnV725800619714320F40MnV(Ti)728815632694405GF40SiMnVS735800345F45V749800680747310YF45V740797310YF45MnV740790260碳素工具钢T7(A)725765700280T8(A)730750700220T8Mn(A)725690T9(A)730760700190T10(A)730(800)7002

22、00T11(A)730(810)700185T12(A)730(820)700200T13(A)730(830)700190T10Mn2710(850)125合金工具钢SM1CrNi3(P6)7208106007154091Ni3Mn2MoCuAI6758213825172702Cr3Mo2NiVSi776851672Y20CrNi3MnMoAl(P21)7407802903Cr2MoWVNi8168332683Cr2MnNiMo7157702803Cr2Mo(P20)7708256407603353Cr3Mo3VNb8259207348103553Cr3Mo3W2V8409227868393

23、73牌号Ac】Ac3 (Accm)Ar1Ar3(Arcm)Ms3Cr2W4V8208406904003Cr2W8V(H21)820(925)773(838)3803Cr3Mo3VNb825(920)7348103554CrMnSiMoV7928556607702904CrSi7458607252904CrSiV7658307253304CrMoVSi8509101304CrW2Si(SKS41)7808407353154CrW2VSi8008757302754Cr3Mo2MnVB8018746807593424Cr3Mo2MnVNbB7899102634Cr3Mo2MnWV7703204Cr3

24、Mo2NiVNb7703204Cr3Mo3SiV(H10)8109107503604Cr3Mo3W2V8509307358254004Cr3Mo3W4VTiNb8218807528504Cr4Mo2WVSi8309106707502554Cr5MoSiV(H11)8539127358103104Cr5MoSiVI(H13)8609157758153404Cr5MoWSiV8359207408252904Cr5Mo2MnVSi8158932714Cr5W2VSi8759157308402755SiMn7557906905SiMnMoV(S2)7647883005Cr3MnSiMo1V(S7)79

25、2*835*254*5Cr3W3MoSiVNb7809206657253305CrMnSiMoV7107606502155CrMnMo7107606506802205CrNiMo(L6)7307806802305CrNiMoV7408156507302105CrNiMnMoVSCa6957353053782205CrNiTi7207707002305CrNiW7308202055Cr2NiMoVSi7508746257512435Cr4Mo3SiMnVAI8379022775Cr4Mo2W2SiV8108857007852905Cr4Mo2W5V8368937448162505CrW2Si(S

26、1)7758607252956CrSi7708307102506CrNiMnSiMoV7057405806051746Cr4Mo3Ni2WV7378226501806CrW2Si775810725280牌号AqAC3 (Accm)Ar1Ar3(ArCm)Ms6Cr4W3Mo2VNb8207302206Cr6W3MoVSi875(905)7557902506W6Mo5Cr4V8207302407MnSi27507752157CrSiMnMoV7768346947322117Cr4W3Mo2VNb8108307407602207Cr7Mo3V2Si(LD1)876(925)725(816)1057

27、Cr4W7MoV7851848Cr2MnMoWVS7708206607108Cr37858307507703708CrV740*761*7002159Mn2710(760)6259Mn2V(O2)736(765)652(690)1809SiCr770(870)7301609Cr2730(860)7002709Cr2Mo755(850)1909CrWMn750(900)710230MnSi760(865)708245MnCrWV(OI)750(780)655190SiMnMo735(770)676(720)SiMnWVNb750(785)130Cr745(900)700240V730770700

28、200Cr06730(950)700(740)CrMn740(980)700245CrMnSi730(930)700Cr2745(900)700240Cr2Mn2SiWMoV770740640(605)190Cr4W2MoV795(900)760142Cr5MolV(A2)785(835)705(750)180Cr8Mo2SiV(DC53)845(905)715(800)115Cr12(SKD1)810(835)755(770)180Cr12MoV(SKD11)830(855)750(785)230Cr12Mo1V1(D2)810(875)750(695)190Cr12Mo810(875)69

29、5230Cr12MoW815255Cr12V810760180V730(770)700200VTi740(760)670(680)250W(F1)740(820)710W2745(950)720W3CrV770805710730牌号Ac】Ac3(ACcm)Ar1Ar3(Arcm)MsCrW760(805)725CrW4760(790)CrW5760(790)700(730)CrWMn(SKD31)750(940)710255高速工具钢9Cr6W3Mo2V2795(820)220Cr4W2MoV795(900)760142Cr6WV815(845)625(775)150Cr8MoWV3Si858

30、907215Cr12W815(865)7151809W18Cr4V810(845)135W18Cr4V(T1)810860(865)726(753)150200W18Cr4VCo5(T4)820(875)130190W14Cr4VMnRE795(860)W12Cr4V4Mo835855770225W12Mo3Cr4V3N830870765175W12Mo3Cr4V3Co5Si835860140W10Cr4V4Co5820170W10Mo4Cr4V3AI830860(890)115W9Cr4V2820(870)740(780)200W9Mo3Cr4V830(875)195CW9Mo3Cr4VN8

31、10(850)160W9Mo3Cr4V3840(875)210W9Mo3Cr4VAI850(890)220W9Mo3Cr4VCo5810(845)195W8Mo5Cr4VCo3N820116W7Mo4Cr4V750(830)145W6Mo5Cr4V2(M2)835(885)736(781)131W6Mo5Cr4V2Co5823852220W6Mo5Cr4V2AI845(924)120W6Mo5Cr4V3810845140W6Mo5Cr4V5SiNbAI830860160W6Mo5Cr4V2Co5836877739753220W4Mo3Cr4VSi815(855)170W3Mo2Cr4VSi81

32、5(865)140W2Mo9Cr4V(M1)827195W2Mo9Cr4V2(M 7)810820845860210W2Mo9Cr4VCo 8(M 42)830855150弹簧钢30W4Cr2VA82084069040050CrMn74078569030050CrMnV735787686745290牌号AclAc3 (Ac)Ar1Ar3(Ar)Ms50CrVA75278868874630067CrVA(TDSiCr)732772*228*55CrMnVA75078768674527555SiMnB74078064868024055Si2Mn77584069030055Si2MnB7708256

33、9074528955SiMnMoV74581561069029055SiMnMoVNb73077059068529255SiMnVB75077567070055CrMnA75077525055CrSi765*825*290*60CrSiV(TDSiCrV)763*823*256*60SiMn73079028560SiMnMo70076026460Si2MnA75581070077030560Si2CrA76578070060Si2CrVA77078071060Si2Mo74079026060CrMnA735*765*260*60CrMnBA735*765*260*60CrMnMoA700805

34、65525560CrMnSiVA74580027065MnSiV75580267570525565Si2MnWA76578070070Si2CrA75680022070Si3Mn(A)780810700290轴由承钢G20CrMo(AISI4118)750825680775380G20CrNiMo(AISI8620)730830669770395G20CrNi2Mo(AISI4320)725810630740380G20Cr2Ni4685775585630305G55SiMoVA765858687759304G8Cr15752(824)684780240GCr6735(860)700192GC

35、r9740(887)690721205GCr9SiMn738(775)700724170GCr15760(900)695707240GCr15SiMn770(872)708200GCr15SiMo750(785)695210GCrSiWV765(810)692200GMnMoV(RE)743(873)677(698)175GSiMn(RE)745674150牌号AqAc3(Accm)Ar1Ar3(Arcm)MsGSiMnV755(780)680(705)100GSiMnVRE745(785)680(730)125GSiMnMoV740(800)681(727)115GSiMnMoVRE742(

36、887)682(702)Cr4Mo4V(M50)726(840)720(778)130Cr14Mo4V(AISI618)875(925)745(800)不锈耐热钢1(12)Cr6Si2Mo8508907657900(06)Cr138009057808203701(12)Cr138208507008203402(20)Cr138208936717433203(30)Cr138008409507007422403(30)Cr13Si8302503(32)Cr13Mo8408907507904(40)Cr1380085010007802706(60)Cr13Mo8259002103(31)Cr17M

37、o860985175*1Cr10Co6MoVNb7608153601(13)Cr11Ni2W2MoV7357858859202793451Cr12Ni3Mo2V7158153051(14)Cr12Ni2WMoVNb7608102901(15)Cr12WMoV8208906707601(12)Cr13Ni2(414)7322741(14)Cr17Ni2(431)7271432(25)Cr13Ni27067803204(42)Cr9Si28659358058301904(40)Cr10Si2Mo9009708108702808(83)Cr20Si2Ni8409203059(95)Cr1881084

38、0740765170102Cr17Mo(9Cr18Mo)81576514511(108)Cr17(440C)815840740765145(110)Cr14Mo4V875925745800注：1钢的显微组织转变点宀、A3和A是在缓慢加热、缓慢冷却条件下测得的临界点，因同13cm一牌号钢的化学成分不尽相同、加热和冷却速度也有差别，实测临界温度出现波动是正常的。实际 生产中，钢的组织转变总有滞后现象，实现组织转变，加热温度要高于临界点，冷却温度要低于临 界点。通常把加热时的临界点表示为Ac、Ac3和Ac，把冷却时的临界点表示为Ar_ Ar3和Ar。13c13c另外，用Ms和Mf表示马氏体开始转变和

39、转变终了温度。2. *表示计算值，计算采用安德魯斯()公式16AC1=723%+%+%+290As%+%(C)AC3 = 910 203iC% %+%+104V%+%+%(C)Ms=539423C%(C)3. 按 GB/T20878-2007 规定，不锈耐热牌号表示方法变更如下：用牌号前()中的数字代替第 1 位 数字，作为新牌号。马氏体沉淀硬化不锈钢的临界点参考值(C)牌号ACAc3Ms6含量()(StainlessW)650*1705*69305Cr17Ni4Cu4Nb (17-4 PH)67074014005Cr15Ni5Cu4Nb(15-5 PH)662*1702*6165*306Cr

40、15Ni5Cu2Ti(08X15H5囚2T)64075014004Cr15Ni6Cu2Nb(Custom450/XM-25)632707118035Cr16Ni7AlTi(Croloy16-6PH /9M814)613*1690*669*305Cr14Ni5MoCu2Nb(FV520B)667*1790*6162*304Cr13Ni8Mo2AI (PH13-8MO)655*1790*612115Cr15Co13Mo5V(AFC-77)775*1830*6140*512Cr12Co10Mo6(X12K10M6)810*1890*6155*5注：1. *1 不锈钢临界点计算公式：Ac】(C) =

41、820 25Mn 30Ni 11Co% 10Cu + 25Si + 7(Cr 13) + 30AI+ 20Mo + 50V (Irving公式，适用于含Cr12%17%马氏体和沉淀硬化不锈钢的Ac1点计算，一11Co 10Cu%和+ 7(Cr13)%为笔者增补的修正项，Mo的系数由25修订为20)。2. *3 沉淀硬化不锈钢临界点 Ms 的计算公式：Ms(C)=1180 1450(C + N) 30Si 30Mn 37Cr57Ni22Mo 32Cu (魏振宇公式适用于经充分奥氏体化后淬水状态的沉淀硬化型不锈钢的临界点计算，一 32Cu%为笔者增补的修正项)。3. *5 不锈钢临界点 Ms 的计

42、算公式： Ms(C)=635450C450N 30Mn 50Si 20Cr 20Ni 45Mo + 10Co 35Cu 36W46V 53AI (Pickering公式，适用于%Ni为基础的钢和含钻、钨、钒、铝的钢)。4. *6 不锈钢临界点 Ac3 的计算公式：Ac3(C)=910 203 vC + 10Mn 9Cr + +104V+80AI+100Ti+250Nb 4Co (安德魯斯()公式，T0Mn 9Cr+80AI+100Ti+250Nb 4Co 为笔者增 补的修正。)5. M只索科夫(Coko刀)公式：6 (%)= + + + 14Ti + + + 41C18 (适用于不锈钢，+ +

43、 + 为笔者增补的修正项。负数表示钢中不含6铁素体)。6. 称为奥氏体保留系数，用来衡量淬火后钢中残余奥化体留存量。半奥氏沉淀硬化不锈钢的临界点参考值(C )牌号AciAC*Md*oMs6含量()07Cr17Ni7Al(17-7PH/631)660*172564 15*307Cr15Ni7Mo2Al (PH15-7Mo)700*182041 6*307Cr14Ni8Mo2Al (PH14-8Mo)660*180852 9*309Cr17Ni5Mo3N(美 S35000/AM350/533)755*183046 35*512Cr16Ni5Mo3NbN(美 S35500/AM355/634)745*182728 33*507Cr12Mn5Ni4Mo3AI605658691052006Cr16Ni6(16-6PH /07X16H6)600650579注：1.*1 不锈钢临界点计算公式:AC1(C) = 820 25Mn 3