钢质等级

钢质等级，也称钢铁牌号，是由标准组织制定的，用于对各种钢铁产品进行分类标识的方法。

分级的标准首先是化学成分中减少不必要的杂质，分成普通钢和优质钢，合格的普通钢中磷和硫含量少于约万分之五级，更少便是优质钢，优质钢又细分优质钢和高级优质钢，后者还可以再细分。

然后是对各种材料性能的测验，各地和国际都制定一些标准方便用家。

例如：

- 国际标准化组织 ISO/TS 4949:2003
- 欧洲标准委员会 EN 10027
- 中华人民共和国国家标准 GB/T 221

EN steel number(欧洲)｜EN steel name(欧洲)｜ASTM grade(美国)｜AISI/SAE grade(美国)｜UNS(美国)｜DIN(德国)｜BS(英国)｜UNI(意大利)｜JIS(日本)

碳钢

1.11411.04011.0453｜C15DC18D｜10101018｜CK15C15C16.8｜040A15080M15080A15EN3B｜C15C161C15｜S12CS15S15CKS15C

1.05031.11911.11931.1194｜C45｜1045｜C45CK45CF45CQ45｜060A47080A46080M46｜C451C45C46C43｜S45CS48C

1.07261.0727｜35S2045S20｜1140/1146｜35S2045S20｜212M40En8M

1.07151.0736｜11SMn37｜1215｜9SMn289SMn36｜230M07En1A｜CF9SMn28CF9SMn36｜SUM 25SUM 22

1.07181.0737｜11SMnPb3011SMnPb37｜12L14｜9SMnPb289SMnPb36｜230M07 LeadedEn1B Leaded｜CF9SMnPb29CF9SMnPb36｜SUM 22SUM 23SUM 24

1.1555｜C120U｜C125W｜BW1C｜C120KU｜SK2

合金钢

1.7218｜4130｜25CrMo4GS-25CrMo4｜708A30CDS110｜25CrMo4 (KB)30CrMo4｜SCM 420SCM 430SCCrM1

1.72231.72251.72271.3563｜42CrMo4｜4140/4142｜41CrMo442CrMo442CrMoS443CrMo4｜708M40708A42709M40En19En19C｜41CrMo438CrMo4 (KB)G40 CrMo442CrMo4｜SCM 440SCM 440HSNB 7 SCM 4MSCM 4

1.65821.6562｜34CrNiMo6｜4340｜34CrNiMo640NiCrMo8-4｜817M40En24｜35NiCrMo6 (KB)40NiCrMo7 (KB)｜SNCM 447SNB24-1-5

1.65431.6523｜20NiCrMo2-2｜8620｜21NiCrMo2221NiCrMo2｜805A20805M20｜20NiCrMo2｜SNCM 200 (H)

1.5415｜16Mo3｜A240 A/B/C｜K12822K12320K12020K11820｜15Mo3｜1503-243B240243｜15Mo316Mo3｜STBA12

不锈钢

1.4310｜X10CrNi18-8｜301｜S30100

1.4318｜X2CrNiN18-7｜301LN

1.4305｜X8CrNiS18-9｜303｜S30300｜X10CrNiS18-9｜303S 31En58M｜X10CrNiS18-09｜SUS 303

1.4301｜X2CrNi19-11X2CrNi18-10｜SAE304不锈钢｜S30400｜X5CrNi18-9X5CrNi18-10XCrNi19-9｜304S 15304S 16304S 18304S 25En58E｜X5CrNi18-10｜SUS 304SUS 304-CSP

1.4306｜X2CrNi19-11｜304L｜S30403｜304S 11｜SUS304L

1.4311｜X2CrNiN18-10｜304LN｜S30453

1.4948｜X6CrNi18-11｜304H｜S30409

1.4303｜X5CrNi18-12｜305｜S30500

1.44011.4436｜X5CrNiMo17-12-2X5CrNiMo18-14-3｜316｜S31600｜X5CrNiMo17 12 2X5CrNiMo17 13 3X5CrNiMo 19 11X5CrNiMo 18 11｜316S 29316S 31316S 33En58J｜X5CrNiMo17 12X5CrNiMo17 13X8CrNiMo17 13｜SUS 316SUS316TP

1.4404｜X2CrNiMo17-12-2｜SAE316L不锈钢｜S31603｜316S 11｜SUS316L

1.44061.4429｜X2CrNiMoN17-12-2X2CrNiMoN17-13-3｜316LN｜S31653

1.4571｜316Ti｜S31635｜X6CrNiMoTi17-12｜320S 33

1.4438｜X2CrNiMo18-15-4｜317L｜S31703

1.4541｜321｜S32100｜X6CrNiTi18-10｜321S 31｜SUS321

1.4848｜GX40CrNiSi25-20｜A351 HK40｜J94204｜SEW 595 GX40CrNiSi25-20｜310C40｜SCH22

1.4859｜GX10NiCrSiNb32-20｜N08151｜GX10NiCrSiNb32-20

1.4878｜X12CrNiTi18-9 X8CrNiTi18-10｜321H｜S32109

1.4906｜X7CrNiNb18-10｜347H｜S34709

1.4512｜X6CrTi12｜409｜S40900｜SUH409

410｜S41000

1.4016｜430｜S43000｜X6Cr17｜430S 17｜SUS430

440A｜S44002

1.4112｜440B｜S44003

1.4125｜440C｜S44004｜X105CrMo17｜SUS440C

1.4104｜430F｜S44020｜X14CrMoS17｜SUS430F

1.4057｜X17CrNi16-2｜431 X｜S43100｜X16CrNi16｜431S 29｜SUS431

1.5423｜16Mo5｜A335 P1｜45204419H4419｜K11522｜16Mo5｜STPA12

1.7715｜14MoV6-3｜A335 P2｜K11547｜14MoV6-3｜660｜STPA20

1.73351.7338｜13CrMo4-510CrMo5-5｜A335 P11｜K11597｜STPA23

1.73751.73801.7383｜10CrMo9-1011CrMo9-1012CrMo9-10｜A335 P22｜K21590｜17175 10CrMo910｜STPA24

1.73621.7366｜X11CrMo5X12CrMo512CrMo19-5｜A335 P5｜501502｜K41545S50100S50200｜STPA25

1.7386｜X11CrMo9-1X12CrMo9-1｜A335 P9｜503｜S50400S50488K90941｜STPA26

1.4903｜X10CrMoVNbN9-1｜A335 P91｜K91560｜X10CrMoVNbN9-1

1.49051.4906｜X11CrMoWVNb9-1-1X12CrMoWVNbN10-1-1｜A335 P92｜K92460｜X11CrMoWVNb9-1-1X12CrMoWVNbN10-1-1

1.4539｜X1NiCrMoCu25-20-5｜904L｜N08904

1.4547｜X1CrNiMoCuN20-18-7｜S31254

1.4565｜NIT50｜S20910

NIT60｜S21800

工具钢

1.2363｜X100CrMoV5｜A-2｜T30102｜X100CrMoV51｜BA 2｜X100CrMoV5-1 KU｜SKD 12

A-3｜T30103

A-4｜T30104

A-6｜T30106

A-7｜T30107

A-8｜T30108

A-9｜T30109

1.2365｜X32CrMoV3-332CrMoV12-28｜H10｜T20810｜X32CrMoV3-332CrMoV12-28｜SKD 7

1.2379｜X153CrMoV12｜D-2｜X153CrMoV12-1｜BD 2｜X155CrVMo12-1｜SKD 11

1.2510｜O-1｜100MnCrW4｜Bo 1｜95MnWCr-5 KU