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1、【精品文档】如有侵权，请联系网站删除，仅供学习与交流钢的临界温度.精品文档.钢临界温度:Ac1、Ac2、Ac3、Ar1、Ms这5个符号的意义Ac1：加热时珠光体向奥氏体转变的开始温度。 Ac3：加热时先共析铁素体全部转变成奥氏体的终了温度。 Ar1：冷却时奥氏体向珠光体转变的开始温度。 Ms：淬火时马氏体的转变起始温度。 2 ,(770)在Fe-Fe3C状态图上是铁素体的磁性转变曲线的温度钢的临界温度参考值日期：2010年8月10日 11:16单位：牌 号Ac1Ac3Ar1Ar3Ms碳 素 结 构 钢0872589070085448010730875680855 157358636858404
2、5020735855680865 2573584068082438030732813677796380357248026807743604072479068076034045725770690720330507257606907213005572777469075529060727766690743265657277526967302657073073769572724075725740690727230807257306907272308572373769069522015Mn735863685840 20Mn73585468283542025Mn735830680800 30Mn73481
3、267579635535Mn730800680770 40Mn726790689768 Y40Mn731807 28045Mn726770689768 50Mn720760660 32060Mn72776568974127065Mn72676568974127070Mn723740680 合 金 结 构 钢10Mn2720830620710 16Mn736850 38620Mn272584061074540030Mn271880462772136035Mn271379363071032540Mn271376662770432045Mn271176562670432050Mn2710760596
4、68032008Mn2Si735905 300牌 号Ac1Ac3Ar1Ar3Ms15Mn2SiCrMo725855 38045MnSiV735805 29518MnMoNb73685064675637020MnMo730839685729 30Mn2MoWA720845 33045MnMoV727791 24015MnNi707858 15MnNiMo714854 15MnTiRE73486561577939012MnV734865615779 14MnMoV710727880908561665763800 15MnV720850635780 18MnMoNb763850646756 20Mn
5、V73085363075041525Mn2V72483962071036535Mn2V725770 32042Mn2V725770 31045Mn2V725770 31020SiMn732840 27SiMn75083069075035535SiMn750830645 33040SiMn760815 29042SiMn74080064571533050SiMn71079763670330515SiMn3MoA68086032739629032Si2Mn2MoA(防弹钢)72789162077431515SiMn3MoWV(A)68583034541536020SiMn2MoV727*877*6
6、40816330*25SiMn2MoV727*866*640785319*30SiMn2MoVA72584563072531030Si2Mn2MoWV739798 31035SiMn2MoV735780 30637SiMn2MoV729823 31437SiMn2MoWV72083535051029040SiMn2MoWV722836 29042SiMnMoV755870 29535B730802691791 40B730790690727 45B725770690720 50B(A)72575567071925315MnB720847 41020Mn2B730853613736 30Mn2B
7、726786 牌 号Ac1Ac3Ar1Ar3Ms40MnB73078065070032540MnBRE725805 34045MnB727780 12MoVWBSiRE835940804880 14MnMoVBRE757900700773 20MnMoB740850690750 30Mn2MoB734800 30Mn2MoTiB(A)733814640698 40MnMoB724805652737 15MnVB73084063577043020MnVB72084063577023020MnTiB72684061075341020Mn2TiB715843625795 25MnTiBRE70881
8、060570539140MnVB730774639681 40MnWB734822 32020SiMnVB726866699779 22SiMnMoWTiB744862 10CrNiMoVB724876 12Cr2MoWVTiB82084595098073074083085542012Cr3MoVSiTiB840958 37415CrMoVB756896 18CrMn2MoBA741854 32018Cr2Mn2MoTiB770860 20Cr1Mo1VNbB827909793862 25CrMnMoTiB76585165375640330Cr2MnMoB724815 15Cr76683870
9、2799 20Cr76583670279939030Cr740815670 35535Cr740815670 36538CrA780840 35038CrA176088567574036040Cr74380569373032845Cr74579066069335550Cr72177166069325015CrMn750845690 40020CrMn76583570079836040CrMn740775690 35050CrMn730760 29015CrMn2SiMo(A)73280538947836020CrMnSi(A)755840690 20Cr2Mn2SiMo(A)725835615
10、700305牌 号Ac1Ac3Ar1Ar3Ms25CrMnSi(A)760880680 30530CrMnSi(A)76083067070535235CrMnSi(A)77583070075533040CrMnSiMoVA780830 28840CrMnSiNiMo695800 33045CrMnSi(A)790880 29550CrMnSiMo790815 27530CrMnMoTiA755830 35014CrMnSiNi2MoA72480560769036418CrMnNiMo73079549069038030CrMnSiNi2A750760805830 31032018CrMnTi74
11、0825650730 20CrMnTi74583066573042430CrMnTi765790660740 40CrMnTi76582064068032035CrSi755830715 34038CrSi76381068075533040CrSi755815715 32016CrSiNi745*845* 390*40CrSi2Ni2MoA748802 29016Mo73587590061083042020Mo726*845* 420*30Mo724*825* 390*12CrMo720880695790 12Cr2Mo1790900 38015CrMo74584569579043520CrM
12、o74681850474638025CrMo75082066574538030CrMo75780769376334530Cr3MoA765810 33535CrMo75580069575032035CrMoAl775885 35538CrMoAl(A)76088567574036042CrMo730800690 31045CrMo720760 28550CrMo725760 29015CrMnMo710830620740 20CrMnMo710830620740 20Cr2Mn2Mo76182865573531030CrMnMoTiA755830 35040CrMnMo735780680 12
13、CrMoV790900774865 12CrlMoV774803882914761787830895400牌 号Ac1Ac3Ar1Ar3Ms15CrMnMoVA77087067478037617CrMo1V783803885922741785811838 20CrMoWV800930 33020Cr3MoWVA82093069079033024CrMoV790840680790 25Cr2MoV77084069078034025Cr2MolVA780870700790 30Cr2MoV78183371174733032Cr3MoVA795835 31035CrMoVA755835600 356
14、35 Cr1Mo2V770895 27038 Cr2Mo2VA780850 32055CrMoV75579068071526530Ni690810 36540Ni715770 33012CrNi715830670 12CrNi2(A)71583067076840512CrNi3(A)72081060071540912Cr2Ni4(A)72080060567539018CrNi4A70578057067036020CrNi(A)71080566079041020CrNi3A70076050063034020Cr2Ni4A68577558563030530CrNi3A699749650 32035
15、Cr2Ni4A68576062164932037CrNi3(A)710770640 31040CrNi70775066070134045CrNi725775680 31050CrNiA725770680 30012CrNi3Mo710800 38512Cr2Ni3Mo690785 12CrNi4Mo660770 37016CrNi3MoA695770 32018Cr2Ni4Mo700810 37020CrNiMo725810 39630CrNiMo730775 34030CrNi3Mo680770 31030CrNi4MoA700740 32534CrNi3Mo705750 29035CrNi2Mo695780400 32035Cr2Ni4MoA720765 20040CrNiMoA72079068046932040CrNi2Mo680775 390牌 号Ac1Ac3 (Accm)Ar1Ar3(Arcm)Ms30CrNi2MoVA725780640 32032CrNi2MoTiA(防弹钢)725774 31835CrNi3MoV725780 32045CrNiMoVA720790650 27515CrV740830770 20CrV76684070478243530CrV765820 35540CrV755790700745340