碳素钢是近代工业中使用***早、用量***大的基本材料。世界各工业***，在努力增加低合金高强度钢和合金钢产量的同时,也非常注意改进碳素钢质量,扩大品种和使用范围。目前碳素钢的产量在各国钢总产量中的比重,约保持在80％左右,它不仅广泛应用于建筑、桥梁、铁道、车辆、船舶和各种机械制造工业，而且在近代的石油化学工业、海洋开发等方面，也得到大量使用。碳素钢按化学成分（即以含碳量）可分为低碳钢、中碳钢和高碳钢。(1)低碳钢又称软钢,含碳量从0.10％至0.30%低碳钢易于接受各种加工如锻造,焊接和切削,常用於制造链条,铆钉,螺栓,轴等。(2)中碳钢碳量0.25％～0.60％的碳素钢。有***钢、半***钢、沸腾钢等多种产品。除碳外还可含有少量锰(0.70％～1.20％)。按产品质量分为普通碳素结构钢和优质碳素结构钢。热加工及切削性能良好，焊接性能较差。强度、硬度比低碳钢高，而塑性和韧性低于低碳钢。可不经热处理，直接使用热轧材、冷拉材，亦可经热处理后使用。淬火、回火后的中碳钢具有良好的综合力学性能。能够达到的***高硬度约为HRC55(HB538)，σb为600～1100MPa。所以在中等强度水平的各种用途中，中碳钢得到***广泛的应用，除作为建筑材料外，还大量用于制造各种机械零件。（3）高碳钢常称工具钢,含碳量从0.60%至1.70%,可以淬硬和回火。锤,撬棍等由含碳量0.75%的钢制造;切削工具如钻头,丝攻,铰刀等由含碳量0.90%至1.00%的钢制造。用途用于制造承载较小的零件、铁丝、铁圈、垫铁、开口销、拉杆、冲压件以及焊接件等。用于制造拉杆、套圈、垫圈、渗圈、渗碳零件以及焊接件等。用于制造金属结构件、心部强度要求不高的渗碳件或碳氮共渗件、拉杆、连杆、吊钩、车钩、螺栓、螺母、套筒、轴以及接件；C、D级用于制造重要的焊接结构件。用于制造转轴、心轴、吊钩、拉杆、摇杆、楔等强度要求不高的零件。此负焊接性尚可。用于制造轴类、链轮、齿轮、吊钩等强度要求高的零件。碳素工具钢：T7SK7SK6SK70C70W21.1620C70UT8SK80SK6SK5C80W21.1625C80UT8AC80W1T8MNSK85SK5C85WS1.1830T10SK95SK4SK3C105W21.1645T12SK2SK120C125W21.1663T12AT13SK1SK140C130W21.1673合金工具钢：8MNSISKS95C75W1.17509SICR90CRSI51.2108CR2SUJ2102CR61.2067CR06SKS8140CR31.20089CR290CR31.2056WSKS21120W41.2414CR12SKD1D3X210CR121.2080CR12MOVSKD11X165CRMOV121.26019MN2VO290MNCRV81.28429CRWMNSKS3100MNCRW41.2510CRWMNSKS31105WCR61.24193CR2W8VSKD5X30WCRV9-31.25815CRMNMO40CRMNMO71.23115CRNIMOSKT4L655NICRMOV61.27134CR5MOSIVSKD6H11X38CRMOV5-11.23434CRW2SISKS415CRW2SIS145WCRV71.2542高速工具钢：W18CR4VSKH2T1HS18-0-1S18-0-11.33552750W6MO5CR4V2SKH51M2S6-5-21.33392722W18CR4VCO5SKH3T4S18-1-2-51.3255W2MO9CR4VCO8SKH59M42M41S2-10-1-81.32472716模具钢：PXZPX4PX5NAK55NAK80S-STARG-STARYK30DC11DC53DHA1DH21DH31-SDH2FDH42GFAMH51MH55MH8SGTGOADEX20DEX40DEX60PD613SUS420S50CH3100PX88PAK90QCM8MH85HPM1HPM2HPM7HPM38HPM50HPM75HPM77G20Cr2Ni4ACENA1DACSKD4SKD5SKD7SKD8SKT4SK3SK4SK5SKS3SKD11YEMYEM-KDA***5SKD61SKD62FDACDAC10DAC55SLDSLD8SLD10ARK1SGTYXM1YXM4YXR3YXR33SKH-9SKH-51SKH-55SKH-57SKH-59HAP10HAP40SUS420J2HAP72NP8NP9YSSYHD28YHD3K100DF-2XW-10XW-5XW-41618618H718718HS136S136H840284078416QRO-90HSP-41ASP23ASP30ASP60VANADIS-4VANADIS-10HOTVAR168S635ASSAB88ELMAXXW-42V-4S-7EM2VANCRON40RAMAX2POLMAXUNIMAXNIMAXMM40MMXLELMXXDIEVARP20231127382316208327674125234423672379284223632436251033433207TSP46582722512931285YE2311YE2738YE2083YE2316YE23441.85191.85501.32431.32471.21011.15451.20801.23121.27341.28401.28421.28851.26011.26061.27141.12101.71471.65231.65821.59191.5752M202M238M300M310M340M330W302W303W321K100K110K340K460S390PMS590PMS690PMS790PMS500S705A903W500K105K305N100N320N540N350E200E220E230E400F300F530V320V155V800V82042060617075D2D3H11H13OlO2M2M4L6M35M42A26F7T4243404140A345#50#Crl2Crl2MOVS200CS50C9CrSiH133Cr2W8VW18Cr4VT8AT10A40Cr35CrMO40CrMO654242CrMo40CrNiMo42CrNiMo5CrNiMo1Cr132Cr133Cr134Cr1320CrMnTi30CrMnTi38CrMoALW18W9Y35CAY12Y15Y20Y30Y40常用钢：16MN20CRMNTI20CRMO30CRMOSPCCSS40035K30MNSIQ235ASG1008SAE1008ML10Q215Q195B70#30MNSIBQ195LYML40CRCH22ACH35KML08AL20MN220CR40CRML35M6H08AHML10ML35ACRCH8ACH6AH82BSAE100840KQ215AQ215BQ345BQ345CQ235BSS400SS41S235JRS235JRG1ST37-2S45CS50C50#SAE1045SAE1050***5E***0ES40CSAE1040SAE1020S20C20#CK221.1151CK40CK45CK531.11861.11911.1210CK67SCR420SAE5120SCR440SAE5140SCM435SAE4135SCM440SAE4140SNCM439SAE434020CR41.702741CR41.703534CRMO41.722042CRMO41.722536CRNIMO41.6511Y12Y15Y15PBY40MNSUM21SUM22SUM32B111212L1311441215121412L1410S209***NPB289***NPB36ML08ALML10SWRCH8AT10AT109SICR5CRMNMOH13CR12CR12MOV3CR2W8VCRWMNW6MO5CR4V2W18CR4V60SI2MNGCR1538CRMOAL40CRNIMO20CRNIMO40CRNIMOA35CRMO42CRMO5CRNIMO45#T7T8Q195Q235Q3451.20831.231640CR20CR1CR132CR133CR134CR131CR17SUS420SUS440C60SI2MNA9CR189CR18MOASP23ASP30ASP60DC53M41M42P20718738S13642CRMOS41.7227碳结钢：SPCCSPHCSPCDSPCESPCFSPCENSPCGDC01DC03DC04DC05DC06DC07SPHDST12ST13ST14ST15ST14-TA316MNQ195S185ST331.0035Q215AQ215BUST34-2RST34-21.00281.0034Q235AQ235BQ235CQ235DS235JRS235JRG1S235JRG2ST37-2UST37-2RST37-21.00371.00361.0038Q255AQ255DST44-21.0044Q275S275J2G3S275J2G4ST44-3N1.01441.01451.0055A3SS330SS400SS490SS34SS41***400A***400B***41A***41BSS50HR2HR1FE360AFE360D08F08#10F10#15#20#25#30#35#40#45#50#55#60#70#15MN20MN30MN40MN50MN60MNS58C106210061008101010121015102010251030103510401045105010551060101611151021102210301033103610401043104510501052106210531046040A04045M10040A10045M10095M15050A20060A30060A35080A40080M46060A52070M55080A62080A17080A20080A32080A40080A47030A52S09CKS9CKS10CS15CS20CS25CS30CS35CS40CS45CS50CS55CS58CS53CXC10XC12XC18XC32XC38TSXC38H1X***5X***8TSXC55XC3240M5X***8C10CK10C15CK15C22CK22CK25C25C30C35***0C20***5C55C60C65C70CK35***5ECK45CK53CK6014MN440MN416MNSAE1006SAE1008SAE1010SAE1012SAE1015SAE1020SAE1025SAE1030SAE1035SAE1040SAE1045SAE1050SAE1055SAE1060SAE1016SAE1115SAE1021SAE1022SAE1030SAE1033SAE1036SAE1040SAE1043SAE1045SAE1050SAE1052SAE1062SAE1053SAE1046D6-2UST4UST13CK10CK15CK22C22EC25EC30EC35E***0E***5EC50EC55EC60ECK6715MN321MN430MN436MN440MN460MN31.03141.03361.03011.11211.04011.11411.11511.11581.11781.11811.11861.11911.12101.12031.12211.12311.04671.04691.11461.05611.11571.0642XC6512M520M532M535M540M545M5SS1265SS1350SS1370SS1435SS1572SS1660SS1674SS1665SS1678SS1770SS1430SS1434SS1672SS1674SS1678合结钢20MN230MN235MN240MN250MN215MNV20MNV42MNV35SIMN42SIMN40B45B40MNB15CR20CR30CR35CR40CR45CR50CR12CRMO12CRMOV15CRMO20CRMO30CRMO35CRMO42CRMO35CRMOV25CR2MOVA25CR2MO1VA20CR3MOWVA38CRMOAL40CRV50CRVA15CRMN20CRMN20CRMNSI30CRMNSI35CRMNSIA20CRMNMO40CRMNMO20CRMNTI30CRMNTI20CRNI40CRNI50CRNI12CRNI212CRNI320CRNI330CRNI312CR2NI420CR2NI418CR2NI4WA20CRNIMO40CRNIMOA45CRNIMOVA20CRNIMOA40CRNIMO***N420***N433***N438***N443SCR415SCR420SCR430SCR435SCR440SCR445SCM415SCM420SCM430SCM435SCM440SUP10***N***20SCM421SCM440SN***15SNC815SNC836SNCM220SNCM439SAE1320SAE1330SAE1325SAE1340SAE1345SAE14B35SAE14***SAE5115SAE5120SAE5130SAE5135SAE5140SAE5145SAE5150SAE4119SAE4118SAE4135SAE4140SAE6140SAE6150SAE5115SAE5120SAE4142SAE3415SAE3140SAE3310SAE2515SAE3316SAE8620SAE4340G13300G13350G13400G13450G51150G51200G51300G51350G51400G51500G41180G41350G41400G61500G51150G51200G41420G31400G33106G86200G43400AISI1320AISI1330AISI1325AISI1340AISI1345AISI14B35AISI14***AISI5115AISI5120AISI5130AISI5135AISI5140AISI5145AISI5150AISI4119AISI4118AISI4135AISI4140AISI6140AISI6150AISI5115AISI5120AISI4142AISI3415AISI3140AISI3310AISI2515AISI3316AISI8620AISI4340ASTM1320ASTM1330ASTM1325ASTM1340ASTM1345ASTM14B35ASTM14***ASTM5115ASTM5120ASTM5130ASTM5135ASTM5140ASTM5145ASTM5150ASTM4119ASTM4118ASTM4135ASTM4140ASTM6140ASTM6150ASTM5115ASTM5120ASTM4142ASTM3415ASTM3140ASTM3310ASTM2515ASTM3316ASTM8620ASTM434022MN628MN636MN642MN620CR434CR441CR418CRMO434CRMO442CRMO441CRALMO7420MNCR515NICR1320NICRMO220MN630MN536MN546MN750MN715MNV520MNV642MNV737MNSI546MNSI415CR320CR428CR434CR441CR413CRMO4415CRMO520CRMO525CRMO434CRMO442CRMO424CRMOV5521CRVMOW1241CRALMO721CRV451CRV450CRV416MNCR520MNCR530MNCRTI440NICR614NICR1014NICR1431NICR1414NICR1814NICR1421NICRMO236CRNIMO41.11691.11651.11671.09121.09131.52131.52171.52231.51221.51211.70151.70271.70301.70331.70351.73351.72621.72641.72181.72201.72251.77331.85091.75101.81591.71311.71471.72251.84011.57111.57321.57521.57551.58601.57521.65231.6511淬透合结钢45H15CRH20CRH20CR1H40CRH45CRH16CRMNH20CRMNH15CRMOH20CRMOH22CRMOH42CRMOH20CRMNMOH20CRNI3H12CR2NI4H20CRNIMOH20CRNI2MOHS45CSCR415HSCR420HSCR440H***N***20HSCM415HSCM420HSCM820HSCM440HSNC631HSNC815HSNCM220HSNCM420HASTM4045HASTM5120HASTM5140HASTM5145HASTM4118HASTM4140HASTM8620HASTM4320HH10450H51200H51400H41180H86200H43200***5E41H20CR4H16MNCR5H20MNCR5H16CRMO5H18CRMO4H25CRMO4H42CRMO4H20MNCR5H15NICR3H20NICRMO2H18CRNIMO7H***5E417CR320CR441CR41.11911.70161.70271.703516MNCR520MNCR515CRMO518CRMO420CRMO542CRMO420MNCR515NICR1320NICRMO2-220NICRMO6-41.71311.71471.72621.72431.72641.72251.71471.57521.65231.6566易车铁Y12Y12PBY15Y15PBY20Y30Y35Y40MNSUM21SUM22SUM32SUM22LSUM4210S2011***NPB2811***N2811***NPB2835S2044***N289S2046S20SAEB1112SAE11L08SAE1115SAE12L13SAE1120SAE1130SAE1140SAE1141SAE1212SAE1213SAE1108SAE1146SAE1215SAE12L14G12134G11410G12120G12130G11080G11460G12150G12141ASTMB1112ASTM11L08ASTM1115ASTM12L13ASTM1120ASTM1130ASTM1140ASTM1141ASTM1212ASTM1213ASTM1108ASTM1146ASTM1215ASTM12L14AISIB1112AISI11L08AISI1115AISI12L13AISI1120AISI1130AISI1140AISI1141AISI1212AISI1213AISI1108AISI1146AISI1215AISI12L1410SPB209***NPB2822S2035S209***N2845S209***N369***NPB3610S2010SPB2015S209S201.07211.07221.07231.07181.07261.07111.07151.07211.07271.07361.0737SS1922SS1914SS1957SS1912SS1973SS1926冷镦钢ML08ML08ALML10ML15ML20ML25ML30ML35ML40ML45ML25MNML30MNML35MNML15CRML20CRML15MNBML30CRMOML35CRMOML42CRMOSERCH8ASWRCH10KSWRCH15KSWRCH20KSWRCH25KSWRCH30KSWRCH35KSWRCH40KSWRCH45KSWRCH27KSWRCH33KSWRCH38KSWRCHB62010401044102610301034511551401518413041354140QST34-3QST36-3QST38-3C7CC11CC14CCQ15C15CCQ22C22C1.02131.02141.02341.11321.1152CQ35C35CCQ45***5C15CR241CR425CRMO434CRMO442CRMO41.11721.11921.70151.70351.72181.72201.7225弹簧6570808565MN60SI2MN60SI2CRA60SI2CRVA55SICRA55CRMNA60CRMNA60CRMNMOA50CRVA60CRMNBA30W4CR2VASUP2SUP3SUP4SUP6SUP7SUP12SUP9SUP9ASUP13SUP10SUP11ASPS1SPS3SPS4SPS8SPS5SPS5ASPS9SPS6SPS7SAE1065SAE1070SAE1078SAE1086SAE1095SAE1066SAE9254SAE5155SAE5160SAE4160SAE6150SAE51B60G10650G10700G10780G10860G10950G92540G51550G51600G41610G61500G51601AISI1065AISI1070AISI1078AISI1086AISI1095AISI1066AISI9254AISI5155AISI5160AISI4160AISI6150AISI51B60ASTM1065ASTM1070ASTM1078ASTM1086ASTM1095ASTM1066ASTM9254ASTM5155ASTM5160ASTM4160ASTM6150ASTM51B60CK67CK75CK85CK10160SI760SICR765SI754SICR655CR351CRMOV451CRV458CRMNB430WCRV17.91.12311.12481.12691.12741.09091.09061.71021.71761.77011.81591.2243SS1770SS1778SS1774SS1870SS2230轴承9CR189CR18MOGCR6GCR9GCR9SIMNGCR15GCR15SIMNG20CRMOG20CRNIMOG20CRNI2MOG20CR2NI4G10CRNI3MO9CR189CR18MOSUJ1SUJ2SUJ3SNCM220SNCM420SUS440CSTS440CSTB1STB2STB3SAE50100SAEE50100SAEA485CR1SAEE52100SAE440CG50986G51986G52986100CRMNSI4-4100CR6B2B1B3X108CRMO17B52100CR2105CR4100CR6100CRMN620MOCR421NICRMO2X102CRMO171.35011.35031.35051.35021.73211.65231.3543)