不锈钢的牌号与化学成分标准-GB/T20878-2007
2025-01-20 16:06:12
茂群丝网
中华人民共和国国家标准
GB/T 20878-2007（代替GB/T4229-1984)
不锈钢、耐热钢牌号——化学成分
国标原文档下载：GB/T 20878-2007.pdf
1范围
本标准规定了不锈钢、耐热钢标准牌号及其化学成分（见表1〜表5)，并以附录的形式列入了一些 牌号的物理参数、特性和用途及与国外标准牌号对照表等。
本标准规定的牌号及化学成分极限值适用于制定压延不锈钢、耐热钢（包括钢锭和半成品）产品标准时采用。
2术语及定义
本标准采用下列术语及定义。
2.1
不锈钢 stainless steel，以不锈、耐蚀性为主要特性，且铬含量至少为10.5%，碳含量最大不超过1.2%的钢。
2.1.1
奥氏体类不锈钢 austenitic grade stainless steel
基体以面心立方晶体结构的奥氏体组织（Y相）为主，无磁性，主要通过冷加工使其强化的不锈钢。
2.1.2
奥氏体-铁素体(双相）类不锈钢 austenitic-ferritic(duplex) grade stainl ess steel
基体兼有奥氏体和铁素体两相组织（其中较少相的含量一般大于15%)，可通过冷加工使其强化的 不锈钢。
2.1.3
铁素体类不锈钢ferriticgrade stainless steel
基体以体心立方晶体结构的铁素体组织（a相）为主，有磁性，一般不能通过热处理硬化，但冷 加工可使其轻微强化的不锈钢。
2.1.4
马氏体类不锈钢 martensitic grade stainless steel
基体为马氏体组织，有磁性，通过热处理可调整其力学性能的钢。
2.1.5
沉淀硬化类不锈钢 precipitation hardening grade stainless steel
基体为奥氏体或马氏体组织，并能通过沉淀硬化处理（又称时效硬化）使其硬（强）化的不锈钢。
2.2
耐热钢 heat-resisting steel
在高温下具有良好的化学稳定性或较高强度的钢。
3确定化学成分极限值的一般准则
3.1碳
在碳含量不小于0.03%时，推荐取两位小数；在碳含量不大于0.030%时，推荐取三位小数。
3.2锰
除Cr-Ni-Mn牌号外，对奥氏体钢和其它牌号分别推荐用2%和1% (最大值），但不包括含高硫或硒 的易切削钢或需提高氮固溶度的牌号。
3.3 磷
除非由于技术原因有关生产厂推荐用较低的极限值外，奥氏体类不锈钢推荐用≤0.045%，其它牌号用≤ 0.040%。
3.4硫
除非由于特殊技术原因已规定较低的极限值外，所有牌号推荐用≤0.030%，但不包括易切削钢牌号。
3.5硅
扁平材和管材推荐用≤0.75%，长条材和锻件推荐用≤1.00%，对于同时生产长条和扁平产品的牌号 推荐选用1.00%。选用较低极限值还是较高极限值由具体产品的特殊要求确定。
3.6铬
成分上下限范围推荐为2%，原有较宽成分范围不能压缩小于3%。（八composition spread of 2% is recommended;existing broader limits were not reduced to less than a 3% spread)
3.7镍
除非由于特殊技术要求较宽的成分范围（一般含量较高），成分上下限范围推荐不超过3%。
3.8钼
除非由于特殊技术要求较宽的成分范围，成分上下限范围推荐不超过1%。除特殊技术要求外，钼含量一般应规定上、下限。
3.9氮
除特殊技术要求外，氮含量一般应规定上、下限。
3.10 铜
除特殊技术要求外，铜含量一般应规定上、下限。
3.11铌和钽
除非有特殊用途要求标明钽，同时列入两个元素（即铌+钽）时，推荐只列入铌元素。
注：Cb(columbium)和Nb(niobinm)表示的是同一种元素，我国标准一般用Nb(niobinm)。
4不锈钢标准牌号的化学成分与应用
4.1不锈钢标准牌号按冶金学分类分表，即奥氏体类、奥氏体–铁素体类、铁素体类、马氏体类和沉淀 硬化类等。
表1为奥氏体类不锈钢标准牌号及其化学成分；
表2为奥氏体–铁素体类不锈钢标准牌号及其化学成分；
表3为铁素体类不锈钢标准牌号及其化学成分；
表4为马氏体类不锈钢标准牌号及其化学成分；
表5为沉淀硬化类不锈钢标准牌号及其化学成分。
4.2本标准中的化学成分在被产品标准采用之前，不作为对任何产品的化学成分的要求。
4.3如果可能，一种牌号在各不锈钢产品标准之间化学成分最好统一。本标准规定的化学成分极限值是 用于测定每个牌号总成分中每个元素成分极限值的一种导则。第3章列入了确定每个元素成分极限值的 一般准则，本标准中规定的化学成分极限值是依据这些准则确定的。
4.4由于特殊的技术影响，各产品标准要求会有小的变化。允许在产品标准或合同、协议中适当调整化 学成分范围，或对残余元素、有害杂质含量作特殊限制规定。
表1：奥氏体类不锈钢的标准牌号及其化学成分
| 序号 | 新牌号 | 旧牌号 | 化学成分(质量分数)，％ | ||||||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | N | 其它元素 | |||||
| 1 | 15Cr17Mn6Ni5N | 1Cr17Mn6Ni5N | 0.150 | 1.00 | 5.50-7.50 | 0.045 | 0.030 | 3.50-5.50 | 16.00-18. 00 | – | – | 0.05-0.25 | – | ||
| 2 | 15Cr18Mn8Ni5N | 1Cr18Mn8Ni5N | 0.150 | 1.00 | 7.50-10.50 | 0.045 | 0.030 | 4.00-6.00 | 17.00-19. 00 | – | – | 0.05-0.25 | – | ||
| 3 | 20Cr13Mn9Ni4 | 2Cr13Mn9Ni4 | 0.15-0.30 | 0.80 | 8.00-10.00 | 0.045 | 0.025 | 3.70-5.00 | 12.00-14. 00 | – | – | – | – | ||
| 4 | 20Cr15Mn15Ni2N | 2Cr15Mn15Ni2N | 0.15-0.25 | 1.00 | 14.00-16. 00 | 0.045 | 0.030 | 1.50-3.00 | 14.00-16. 00 | – | – | 0.15-0.30 | – | ||
| 5 | 53Cr21Mn9Ni4N(a) | 5Cr21Mn9Ni4N(a) | 0.48-0.58 | 0.35 | 8.00-10.00 | 0.040 | 0.030 | 3.25-4.50 | 20.00-22. 00 | – | – | 0.35-0.50 | – | ||
| 6 | 26Cr18Mn12Si2N(a) | 3Cr18Mn12Si2N(a) | 0.22-0.30 | 1.40-2.20 | 10.50-12. 50 | 0.045 | 0.030 | – | 17.00-19. 00 | – | – | 0.22-0.33 | – | ||
| 7 | 22Cr20Mn9Ni2Si2N(a) | 2Cr20Mn9Ni2Si2N(a) | 0.17-0.26 | 1.80-2.70 | 8.50-11.00 | 0.045 | 0.030 | 2.00-3.00 | 18.00-21. 00 | – | 0.20-0.30 | – | |||
| 8 | 15Cr17Ni7 | 1Cr17Ni7 | 0.150 | 1.00 | 2.00 | 0.045 | 0.030 | 6.00-8.00 | 16.00-18. 00 | – | – | 0.10 | – | ||
| 9 | 03Cr17Ni7 | 0. 030 | 1.00 | 2. 00 | 0. 045 | 0. 030 | 6. 00-8. 00 | 16. 00-18. 00 | – | – | 0. 20 | – | |||
| 10 | 03Cr17Ni7N | 0. 030 | 1.00 | 2. 00 | 0. 045 | 0. 030 | 6. 00-8. 00 | 16. 00-18. 00 | – | – | 0. 07-0. 20 | – | |||
| 11 | 17Cr18Ni9 | 2Cr18Ni9 | 0.13-0.21 | 1.00 | 2.00 | 0.045 | 0.025 | 8.00-10.50 | 17.00-19. 00 | – | – | – | – | ||
| 12 | 15Cr18Ni9 | 1Cr18Ni9 | 0.150 | 1.00 | 2.00 | 0.045 | 0.030 | 8.00-10.00 | 17.00-19. 00 | – | – | 0.10 | – | ||
| 13 | 15Cr18Ni9Si3(a) | 1Cr18Ni9Si3(a) | 0.150 | 2.00-3.00 | 2.00 | 0.045 | 0.030 | 8.00-10.00 | 17.00-19. 00 | – | – | 0.10 | – | ||
| 14 | Y15Cr18Ni9 | Y1Cr18Ni9 | 0.150 | 1.00 | 2.00 | 0.020 | 30.150 | 8.00-10.00 | 17.00-19. 00 | (c) | – | – | – | ||
| 15 | Y15Cr18Ni9Se | Y1Cr18Ni9Se | 0.150 | 1.00 | 2.00 | 0.020 | 0.060 | 8.00-10.00 | 17.00-19. 00 | – | – | – | Se≥0.15 | ||
| 16 | 08Cr19Ni9(a) | 0Cr18Ni9(a) | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 8.00-11.00 | 18.00-20. 00 | – | – | – | – | ||
| 17 | 03Cr19Ni10 | 00Cr19Ni10 | 0.030 | 1.00 | 2.00 | 0.045 | 0.030 | 8.00-12.00 | 18.00-20. 00 | – | – | – | – | ||
| 18 | 07Cr19Ni9 | 0.04-0.10 | 1.00 | 2.00 | 0.045 | 0.030 | 8.00-10.50 | 18.00-20. 00 | – | – | – | – | |||
| 19 | 05Cr19Ni10Si2NbN | 0.04-0.06 | 1.00-2.00 | 0.80 | 0.045 | 0.030 | 9.00-10.00 | 18.00-19. 00 | – | – | 0.12-0.18 | Nb 0. 03-0.08 | |||
| 20 | 08Cr18Ni9Cu2 | 0Cr18Ni9Cu2 | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 8.00-10.50 | 17.00-19. 00 | – | 1.00- 3.00 | – | – | ||
| 21 | 08Cr18Ni9Cu4 | 0Cr18Ni9Cu3 | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 8.50-10.50 | 17.00-19. 00 | – | 3.00- 4.00 | – | – | ||
| 22 | 08Cr19Ni9N | 0Cr19Ni9N | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 8.00-11.00 | 18.00-20. 00 | – | – | 0.10-0.16 | – | ||
| 23 | 08Cr19Ni9NbN | 0Cr19Ni10NbN | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 7.50-10.50 | 18.00-20. 00 | – | – | 0.15-0.30 | Nb≥0.15 | ||
| 24 | 03Cr19Ni10N | 00Cr18Ni10N | 0.030 | 1.00 | 2.00 | 0.045 | 0.030 | 8.00-12.00 | 18.00-20. 00 | – | – | 0.10-0.16 | – | ||
| 25 | 12Cr18Ni12 | 1Cr18Ni12 | 0.120 | 1.00 | 2.00 | 0.045 | 0.030 | 10.50-13. 00 | 17.00-19. 00 | – | – | – | – | ||
| 26 | 08Cr18Ni12 | 0Cr18Ni12 | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 11.00-13. 50 | 16.50-19. 00 | – | – | – | – | ||
| 27 | 08Cr16Ni18 | 0Cr16Ni18 | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 17.00-19. 00 | 15.00-17. 00 | – | – | – | – | ||
| 28 | 08Cr20Ni11 | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-12. 00 | 19.00-21. 00 | – | – | – | – | |||
| 29 | 22Cr21Ni12N(a) | 2Cr21Ni12N(a) | 0.15-0.28 | 0.75-1.25 | 1.00-1.60 | 0.035 | 0.030 | 10.50-12. 50 | 20.00-22. 00 | – | – | 0.15-0.30 | – | ||
| 30 | 20Cr23Ni13(a) | 2Cr23Ni13(a) | 0.200 | 1.00 | 2.00 | 0.035 | 0.030 | 12.00-15. 00 | 22.00-24. 00 | – | – | – | – | ||
| 31 | 08Cr23Ni13(a) | 0Cr23Ni13(a) | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 12.00-15. 00 | 22.00-24. 00 | – | – | – | – | ||
| 32 | 18Cr23Ni18 | 1Cr23Ni18 | 0.180 | 1.00 | 2.00 | 0.035 | 0.025 | 17.00-20. 00 | 22.00-25. 00 | – | – | – | |||
| 33 | 25Cr25Ni20(a) | 2Cr25Ni20(a) | 0.250 | 1.50 | 2.00 | 0.045 | 0.030 | 19.00-22. 00 | 24.00-26. 00 | – | – | – | – | ||
| 34 | 08Cr25Ni20(a) | 0Cr25Ni20(a) | 0.080 | 1.50 | 2.00 | 0.045 | 0.030 | 19.00-22. 00 | 24.00-26. 00 | – | – | – | – | ||
| 35 | 03Cr25Ni22Mo3N | 0.030 | 0.40 | 2.00 | 0.030 | 0.015 | 21.00-23. 00 | 24.00-26. 00 | 2.00-3.00 | – | 0.10-0.16 | – | |||
| 36 | 02Cr20Ni18Mo6CuN | 0.020 | 0.80 | 1.00 | 0.030 | 0.010 | 19.50-20. 50 | 17.50-18. 50 | 6.00-6.50 | 0.50-1.00 | 0.18-0.22 | – | |||
| 37 | 15Cr16Ni35(a) | 1Cr16Ni35(a) | 0.150 | 1.50 | 2.00 | 0.040 | 0.030 | 33.00-37. 00 | 14.00-17. 00 | – | – | – | – | ||
| 38 | 08Cr17Ni12Mo2(a) | 0Cr17Ni12Mo2(a) | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-14. 00 | 16.00-18. 00 | 2.00-3.00 | – | – | – | ||
| 39 | 03Cr17Ni12Mo2 | 00Cr17Ni14Mo2 | 0.030 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-14. 00 | 16.00-18. 00 | 2.00-3.00 | – | – | – | ||
| 40 | 07Cr17Ni12Mo2(a) | 1Cr17Ni12Mo2(a) | 0.04-0.10 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-14. 00 | 16.00-18. 00 | 2.00-3.00 | – | – | – | ||
| 41 | 08Cr17Ni12Mo2Ti(a) | 0Cr18Ni12Mo2Ti(a) | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-14. 00 | 16.00-18. 00 | 2.00-3.00 | – | – | Ti≥5C | ||
| 42 | 08Cr17Ni12Mo2Nb | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-14. 00 | 16.00-18. 00 | 2.00-3.00 | – | 0.10 | Nb 10C〜1.10 | |||
| 43 | 08Cr17Ni12Mo2N | 0Cr17Ni12Mo2N | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 10.50-13. 00 | 16.00-18. 00 | 2.00-3.00 | – | 0.10-0.16 | – | ||
| 44 | 03Cr17Ni12Mo2N | 00Cr17Ni13Mo2N | 0.030 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-13. 00 | 16.00-18. 00 | 2.00-3.00 | – | 0.10-0.16 | – | ||
| 45 | 08Cr18Ni12Mo2Cu2 | 0Cr18Ni12Mo2Cu2 | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 10.00-14. 50 | 17.00-19. 00 | 1.20-2.75 | 1.00-2.50 | – | – | ||
| 46 | 03Cr18Ni14Mo2Cu2 | 00Cr18Ni14Mo2Cu2 | 0.030 | 1.00 | 2.00 | 0.045 | 0.030 | 12.00-16. 00 | 17.00-19. 00 | 1.20-2.75 | 1.00-2.50 | – | – | ||
| 47 | 08Cr19Ni13Mo4 | 0Cr19Ni13Mo3 | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 11.00-15. 00 | 18.00-20. 00 | 3.00-4.00 | – | – | – | ||
| 48 | 03Cr19Ni13Mo4(a) | 00Cr19Ni13Mo3(a) | 0.030 | 1.00 | 2.00 | 0.045 | 0.030 | 11.00-15. 00 | 18.00-20. 00 | 3.00-4.00 | – | – | – | ||
| 49 | 04Cr18Ni16Mo5 | 0Cr18Ni16Mo5 | 0.040 | 1.00 | 2.50 | 0.045 | 0.030 | 15.00-17. 00 | 16.00-19. 00 | 4.00-6.00 | – | – | – | ||
| 50 | 03Cr19Ni16Mo5N | 0.030 | 1.00 | 2.00 | 0.045 | 0.030 | 13.50-17. 50 | 17.00-20. 00 | 4.00-5.00 | – | 0.10-0.20 | – | |||
| 51 | 03Cr19Ni13Mo4N | 0.030 | 1.00 | 2.00 | 0.045 | 0.030 | 11.00-15. 00 | 18.00-20. 00 | 3.00-4.00 | – | 0.10-0.22 | – | |||
| 52 | 03Cr18Ni14Mo3 | 00Cr18Ni14Mo2 | 0.030 | 1.00 | 2.00 | 0.025 | 0.010 | 13.00-15. 00 | 17.00-19. 00 | 2.50-3.50 | 0.50 | 0.10 | – | ||
| 53 | 03Cr18Ni15Mo4N | 00Cr18Ni15Mo4N | 0.030 | 1.00 | 2.00 | 0.025 | 0.010 | 14.00-16. 00 | 17.00-19. 00 | 2.35-4.20 | 0.50 | 0.10-0.20 | – | ||
| 54 | 08Cr18Ni10Ti(a) | 0Cr18Ni10Ti(a) | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 9.00-12.00 | 17.00-19. 00 | – | – | – | Ti 5C〜0.70 | ||
| 55 | 07Cr18Ni11Ti | 1Cr18Ni11Ti | 0.04-0.10 | 0.75 | 2.00 | 0.030 | 0.030 | 9.00-13.00 | 17.00-20. 00 | – | – | – | Ti 4C〜0.60 | ||
| 56 | 02Cr25Ni22Mo8Mn3CuN | 0.020 | 0.50 | 2.00-4.00 | 0.030 | 0.005 | 21.00-23. 00 | 24.00-25. 00 | 7.00-8.00 | 0.30-0.60 | 0.45-0.55 | – | |||
| 57 | 03Cr24Ni17Mo5Mn6NbN | 0.030 | 1.00 | 5.00-7.00 | 0.030 | 0.010 | 16.00-18. 00 | 23.00-25. 00 | 4.00-5.00 | – | 0.40-0.60 | N≤0.10 | |||
| 58 | 08Cr18Ni11Nb(a) | 0Cr18Ni11Nb(a) | 0.080 | 1.00 | 2.00 | 0.045 | 0.030 | 9.00-12.00 | 17.00-19. 00 | – | – | – | Nb 10C〜1.10 | ||
| 59 | 07Cr18Ni11Nb(a) | 1Cr19Ni11Nb(a) | 0.04-0.10 | 1.00 | 2.00 | 0.045 | 0.030 | 9.00-12.00 | 17.00-19. 00 | – | – | – | Nb 8C〜1.10 | ||
| 60 | 45Cr14Ni14W2Mo(a) | 4Cr14Ni14W2Mo(a) | 0.40-0.50 | 0.80 | 0.70 | 0.035 | 0.030 | 13.00-15. 00 | 13.00-15. 00 | 0.25-0.40 | – | – | W 2.00〜2.75 | ||
| 61 | 25Cr18Ni8W2(a) | 2Cr18Ni8W2(a) | 0.21-0.28 | 0.30-0.80 | 0.70 | 0.030 | 0.025 | 7.50-8.50 | 17.00-19. 00 | – | – | – | W 2.00〜2.50 | ||
| 62 | 08Cr18Ni13Si4(a) | 0Cr18Ni13Si4(a) | 0.080 | 3.00-5.00 | 2.00 | 0.045 | 0.030 | 11.50-15. 00 | 15.00-20. 00 | – | – | – | (b) | ||
| 63 | 02Cr18Ni15Si4Nb | 0.020 | 3.70-4.50 | 2.00 | 0.020 | 0.020 | 14.00-15. 50 | 17.00-18. 50 | – | – | – | Nb(d)0.40〜0.80 | |||
| 64 | 02Cr21Ni26Mo5Cu2 | 0.020 | 1.00 | 2.00 | 0.045 | 0.030 | 23.00-28. 00 | 19.00-23. 00 | 4.00-5.00 | 1.00-2.00 | 0.10 | – | |||
| 65 | 20Cr20Ni14Si2(a) | 1Cr20Ni14Si2(a) | 0.200 | 1.50-2.50 | 1.50 | 0.035 | 0.030 | 12.00-15. 00 | 19.00-22. 00 | – | – | – | – | ||
| 66 | 20Cr25Ni20Si2(a) | 1Cr25Ni20Si2(a) | 0.200 | 1.50-2.50 | 1.50 | 0.035 | 0.030 | 18.00-21. 00 | 24.00-27. 00 | – | – | – | – | ||
注1：表中所列成分除标明范围或最小值，其余均为最大值。
注2：钛、铌和锆可提高钢的稳定性。根据这些元素的原子数以及碳含量和氮含量，有下列等效性：Ti≌7/4Nb≌7/4Zr。
a 耐热钢或可作耐热钢使用。
b 必要时，可添加上表以外的合金元素；
c 可加入小于或等于0.60%Mo；
d 当钢中加入0.40%-0.80%Nb时，碳含量允许放宽到不大于0.03%
表 2 奥氏体-铁素体类不锈钢的标准牌号及其化学成分
| 序号 | 新牌号 | 旧牌号 | 化学成分(质量分数)，％ | |||||||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | N | 其它元素 | ||||||
| 67 | 14Cr18Ni11Si4AlTi | 1Cr18Ni11Si4AlTi | 0.10-0.18 | 3.40-4.00 | 0.80 | 0.035 | 0.030 | 10.00-12. 00 | 17.50-19. 50 | – | – | – | Ti 0.40〜0.70 Al 0.10〜0.30 | |||
| 68 | 03Cr19Ni5Mo3Si2N | 00Cr18Ni5Mo3Si2 | 0.030 | 1.30-2.00 | 1.00-2.00 | 0.035 | 0.030 | 4.50-5.50 | 18.00-19. 50 | 2.50-3.00 | – | 0.05-0.12 | – | |||
| 69 | 12Cr21Ni5Ti | 1Cr21Ni5Ti | 0.09-0.14 | 0.08 | 0.80 | 0.035 | 0.030 | 4.80-5.80 | 20.00-22. 00 | – | – | – | Ti 5(C—0.02)〜0.80 | |||
| 70 | 03Cr22Ni5Mo3N | 0.030 | 1.00 | 2.00 | 0.030 | 0.020 | 4.50-6.50 | 21.00-23. 00 | 2.50-3.50 | – | 0.08-0.20 | – | ||||
| 71 | 03Cr23Ni4N | 0.030 | 1.00 | 2.50 | 0.035 | 0.030 | 3.00-5.50 | 21.50-24. 50 | 0.05-0.60 | 0.05-0.60 | 0.05-0.20 | – | ||||
| 72 | 03Cr25Ni5Mo2N | 0.030 | 1.00 | 2.00 | 0.030 | 0.030 | 5.50-6.50 | 24.00-26. 00 | 1.20-2.50 | – | 0.10-0.20 | – | ||||
| 73 | 03Cr25Ni7Mo3WCuN | 0.030 | 1.00 | 0.75 | 0.030 | 0.030 | 5.50-7.50 | 24.00-26. 00 | 2.50-3.50 | 0.20-0.80 | 0.20-0.30 | W 0.10〜0.50 | ||||
| 74 | 04Cr25Ni6Mo3Cu2N | 0.040 | 1.00 | 1.50 | 0.035 | 0.030 | 4.50-6.50 | 24.00-27. 00 | 2.90-3.90 | 1.50-2.50 | 0.10-0.25 | – | ||||
| 75 | 03Cr25Ni7Mo4N | 0.030 | 0.80 | 1.20 | 0.035 | 0.020 | 6.00-8.00 | 24.00-26. 00 | 3.00-5.00 | 0.50 | 0.24-0.32 | – | ||||
| 76 | 03Cr25Ni7Mo4WCuN | 0.030 | 1.00 | 1.00 | 0.030 | 0.010 | 6.00-8.00 | 24.00-26. 00 | 3.00-4.00 | 0.50-1.00 | 0.20-0.30 | W 0.50〜1.00 Cr+3.3Mo+16N≥40 | ||||
注：表中所列成分除标明范围或最小值，其余均为最大值
表 3 铁素体类不锈钢的标准牌号及其化学成分
| 序号 | 新牌号 | 旧牌号 | 化学成分(质量分数)，％ | |||||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | N | 其它元素 | ||||
| 77 | 08Cr13Al(a) | 0Cr13Al(a) | 0.08 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 11.50-14. 50 | – | – | – | Al 0.10 〜0.30 | |
| 78 | 08Cr13 | 0Cr13 | 0.08 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 11.50-13. 50 | – | – | – | – | |
| 79 | 08Cr11Ti | 0Cr11Ti | 0.08 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 10.50-11. 75 | – | – | – | Ti 6C 〜0.75 | |
| 80 | 03Cr11Ti | 0.03 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 10.50-11. 75 | – | – | – | Ti 6C 〜0.75 | ||
| 81 | 03Cr11NbTi | 0.03 | 1.00 | 1.00 | 0.040 | 0.020 | (b) | 10.50-11. 70 | – | – | 0.030 | Ti+Nb:8(C+N)+0.08～0.75 Ti ≥0.05 | ||
| 82 | 03Cr12(a) | 00Cr12(a) | 0.03 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 11.00-13. 50 | – | – | – | – | |
| 83 | 03Cr12Ni | 0.03 | 1.00 | 1.50 | 0.040 | 0.015 | 0.30-1.00 | 10.50-12. 50 | – | – | 0.030 | – | ||
| 84 | 12Cr15 | 1Cr15 | 0.12 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 14.00-16. 00 | – | – | – | – | |
| 85 | 12Cr17(a) | 1Cr17(a) | 0.12 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 16.00-18. 00 | – | – | – | – | |
| 86 | Y12Cr17 | Y1Cr17 | 0.12 | 1.00 | 1.25 | 0.040 | ≥0.15 | (b) | 16.00-18. 00 | (c) | – | – | – | |
| 87 | 03Cr18Ti | 00Cr17 | 0.03 | 0.75 | 1.00 | 0.040 | 0.030 | (b) | 16.00-19. 00 | – | – | – | Ti或Nb: 0.10〜1.00 | |
| 88 | 12Cr17Mo | 1Cr17Mo | 0.12 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 16.00-18. 00 | 0.75-1.25 | – | – | – | |
| 89 | 12Cr17MoNb | 0.12 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 16.00-18. 00 | 0.75-1.25 | – | – | Nb 5C〜0.80 | ||
| 90 | 03Cr18MoTi | 0.03 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 16.00-19. 00 | 0.75-1.50 | – | 0.025 | Ti,Nb,Zr 或其组合： 8×（C%+N%）～ 0.80 | ||
| 91 | 03Cr18NbTi | 0.03 | 1.00 | 1.00 | 0.040 | 0.015 | (b) | 17.50-18. 50 | – | – | – | Ti 0.10～0.60 Nb≥0.30+3C | ||
| 92 | 03Cr18Mo2NbTi | 00Cr18Mo2 | 0.03 | 1.00 | 1.00 | 0.040 | 0.030 | 1.00 | 17.50-19. 50 | 1.75-2.50 | – | 0.035 | (Ti+Nb):[0.20+4(C+N)] ～0.80 | |
| 93 | 01Cr27Mo | 00Cr27Mo | 0.01 | 0.40 | 0.40 | 0.030 | 0.020 | (d) | 25.00-27. 50 | 0.75-1.50 | 0.20 | 0.015 | (d) | |
| 94 | 01Cr30Mo2 | 00Cr30Mo2 | 0.01 | 0.40 | 0.40 | 0.030 | 0.020 | (d) | 28.50-32. 00 | 1.50-2.50 | 0.20 | 0.015 | (d) | |
注 1：表中所列成分除标明范围或最小值，其余均为最大值。
注 2：钛、铌和锆可提高钢的稳定性。根据这些元素的原子数以及碳含量和氮含量，有下列等效性：Ti≌7/4Nb≌7/4Zr。
a 耐热钢或可作耐热钢使用。
b 允许含有小于或等于 0.60%Ni;
c 可以加入小于或等于 0.60%Mo;
d 允许含有小于或等于 0.50%Ni，小于或等于 0.20%Cu,但 Ni+Cu 的含量应小于或等于 0.50%；根据需要，可添加上表以外的合金元素.
表 4 马氏体类不锈钢的标准牌号及其化学成分
| 序号 | 新牌号 | 旧牌号 | 化学成份(质量分数)，％ | |||||||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | N | 其它元素 | ||||||
| 95 | 15Cr12 | 1Cr12 | 0.15 | 0.50 | 1.00 | 0.040 | 0.030 | (b) | 11.50-13. 00 | – | – | – | – | |||
| 96 | 15Cr13 | 1Cr13 | 0.15 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 11.50-13. 50 | – | – | – | – | |||
| 97 | 05Cr13Ni5Mo | 0.05 | 0.60 | 0.50-1.00 | 0.030 | 0.030 | 3.50-5.50 | 11.50-14. 00 | 0.50-1.00 | – | – | – | ||||
| 98 | Y15Cr13 | Y1Cr13 | 0.15 | 1.00 | 1.25 | 0.045 | ≥0.15 | (b) | 12.00-14. 00 | (c) | – | – | ||||
| 99 | 21Cr13(a) | 2Cr13(a) | 0.16-0.25 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 12.00-14. 00 | – | – | – | – | |||
| 100 | Y25Cr13Ni2 | Y2Cr13Ni2 | 0.20-0.30 | 0.50 | 0.80-1.20 | 0.08-0.12 | 0.15-0.25 | 1. 50-2.00 | 12.00-14. 00 | (c) | – | – | – | |||
| 101 | 31Cr13 | 3Cr13 | 0.26-0.35 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 12.00-14. 00 | – | – | – | – | |||
| 102 | Y31Cr13 | Y3Cr13 | 0.26-0.35 | 1.00 | 1.25 | 0.045 | ≥0.15 | (b) | 12.00-14. 00 | (c) | – | – | – | |||
| 103 | 41Cr13 | 4Cr13 | 0.36-0.45 | 0.60 | 0.80 | 0.040 | 0.030 | (b) | 12.00-14. 00 | – | – | – | – | |||
| 104 | 14Cr17Ni2(a) | 1Cr17Ni2(a) | 0.11-0.17 | 0.80 | 0.80 | 0.040 | 0.030 | 1.50-2.50 | 16.00-18. 00 | – | – | – | – | |||
| 105 | 16Cr17Ni3(a) | 0.12-0.20 | 0.80 | 1.00 | 0.040 | 0.030 | 2.00-3.00 | 15.00-18. 00 | – | – | – | – | ||||
| 106 | 68Cr17 | 7Cr17 | 0.60-0.75 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 16.00-18. 00 | (d) | – | – | – | |||
| 107 | 85Cr17 | 8Cr17 | 0.75-0.95 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 16.00-18. 00 | (d) | – | – | – | |||
| 108 | 108Cr17 | 11Cr17 | 0.95-1.20 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 16.00-18. 00 | (d) | – | – | – | |||
| 109 | Y108Cr17 | Y11Cr17 | 0.95-1.20 | 1.00 | 1.25 | 0.045 | ≥0.15 | (b) | 16.00-18. 00 | (d) | – | – | – | |||
| 110 | 95Cr18 | 9Cr18 | 0.90-1.00 | 0.80 | 0.80 | 0.040 | 0.030 | (b) | 17.00-19. 00 | (d) | – | – | – | |||
| 111 | 108Cr17Mo | 9Cr18Mo | 0.95-1.10 | 0.80 | 0.80 | 0.040 | 0.030 | (b) | 16.00-18. 00 | 0.40-0.70 | – | – | – | |||
| 112 | 90Cr18MoV | 9Cr18MoV | 0.85-0.95 | 0.80 | 0.80 | 0.040 | 0.030 | (b) | 17.00-19. 00 | 1.00-1.30 | – | – | V 0.07〜0.12 | |||
| 113 | 10Cr5Mo(a) | 1Cr5Mo(a) | 0.10 | 1.00 | 1.00 | 0.040 | 0.030 | (b) | 4.00-6.00 | 0.45-0.65 | – | – | – | |||
| 114 | 12Cr12Mo(a) | 1Cr12Mo(a) | 0.10-0.15 | 0.50 | 0.30-0.50 | 0.040 | 0.030 | 0.30-0.60 | 11.50-13. 00 | 0.30-0.60 | 0.30 | – | – | |||
| 115 | 13Cr13Mo(a) | 1Cr13Mo(a) | 0.08-0.18 | 0.60 | 1.00 | 0.040 | 0.030 | (b) | 11.50-14. 00 | 0.30-0.60 | – | – | – | |||
| 116 | 32Cr13Mo | 3Cr13Mo | 0.28-0.35 | 0.80 | 1.00 | 0.040 | 0.030 | (b) | 12.00-14. 00 | 0.50-1.00 | – | – | – | |||
| 117 | 15Cr11MoV(a) | 1Cr11MoV(a) | 0.11-0.18 | 0.50 | 0.60 | 0.040 | 0.030 | 0.60 | 10.00-11. 50 | 0.50-0.70 | – | – | V 0.25〜0.40 | |||
| 118 | 15Cr12WMoV(a) | 1Cr12WMoV(a) | 0.12-0.18 | 0.50 | 0.50-0.90 | 0.040 | 0.030 | 0.40-0.80 | 11.00-13. 00 | 0.50-0.70 | 0.30 | – | W 0.70〜1.10 V 0.15〜0.30 | |||
| 119 | 158Cr12MoV(a) | 1Cr12MoV(a) | 1.45-1.70 | 0.40 | 0.35 | 0.030 | 0.025 | – | 11.00-12. 50 | 0.40-0.60 | – | – | V 0.15〜0.30 | |||
| 120 | 21Cr12MoV(a) | 2Cr12MoV(a) | 0.18-0.24 | 0.10- 0.50 | 0.30-0.80 | 0.030 | 0.025 | 0.30-0.60 | 11.00-12. 50 | 0.80-1.20 | 0.30 | – | V 0.25〜0.35 | |||
| 121 | 18Cr12MoVNbN(a) | 2Cr12MoVNbN(a) | 0.15-0.20 | 0.50 | 0.50-1.00 | 0.040 | 0.030 | (b) | 10.00-13. 00 | 0.30-0.90 | – | 0.05- 0.10 | V 0.10〜0.40 Nb 0.20〜0.60 | |||
| 122 | 13Cr11Ni2W2MoV(a) | 1Cr11Ni2W2MoV(a) | 0.10-0.16 | 0.60 | 0.60 | 0.035 | 0.030 | 1.40-1.80 | 10.50-12. 00 | 0.35-0.50 | – | – | W 1.50〜2.00 V 0.18〜0.30 | |||
| 123 | 23Cr12NiWMoV(a) | 2Cr12NiMoWV(a) | 0.20-0.25 | 0.50 | 0.50-1.00 | 0.030 | 0.025 | 0.50-1.00 | 11.00-12. 50 | 0.90-1.25 | 0.30 | – | W 0.9〜1.25， V 0.20〜0.30 | |||
| 124 | 13Cr14Ni3W2VB(a) | 1Cr14Ni3W2VB(a) | 0.10-0.16 | 0.60 | 0.60 | 0.300 | 0.030 | 2.80-3.40 | 13.00-15. 00 | – | – | – | W 1.60~2.20 Ti≤0.05，B≤0.004 V 0.18~0.28 | |||
| 125 | 14Cr12Ni2WMoVNb(a) | 1Cr12Ni2WMoVNb(a) | 0.11-0.17 | 0.60 | 0.60 | 0.030 | 0.025 | 1.80-2.20 | 11.00-12. 00 | 0.80-1.20 | – | – | W 0.70~1.00， V 0.20~0.30 Nb 0.15~0.30 | |||
| 126 | 15Cr11NiMoNbVN(a) | 2Cr11NiMoNbVN(a) | 0.15-0.20 | 0.50 | 0.50-0.80 | 0.020 | 0.015 | 0.30-0.60 | 10.00-12. 00 | 0.60-0.90 | V 0.20~0.30，N 0.04~0.09，Cu≤0.1，Al≤0.30,Nb 0.20~0.60 | |||||
| 127 | 45Cr9Si3(a) | 4Cr9Si2(a) | 0.40-0.50 | 3.00- 3.50 | 0.60 | 0.030 | 0.030 | (b) | 7.50-9.50 | – | – | – | – | |||
| 128 | 40Cr10Si2Mo(a) | 4Cr10Si2Mo(a) | 0.35-0.45 | 1.90- 2.60 | 0.70 | 0.035 | 0.030 | (b) | 9.00-10.50 | 0.70-0.90 | – | – | – | |||
| 129 | 80Cr20Si2Ni1(a) | 8Cr20Si2Ni(a) | 0.75-0.85 | 1.75- 2.25 | 0.20-0.60 | 0.030 | 0.030 | 1.15-1.65 | 19.00-20. 50 | – | – | – | – | |||
表5 沉淀硬化类不锈钢的标准牌号及其化学成分
| 序号 | 新牌号 | 旧牌号 | 化学成份(质量分数)，％ | |||||||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | N | 其它元素 | ||||||
| 130 | 05Cr13Ni8Mo2Al | 0.05 | 0.10 | 0.20 | 0.010 | 0.008 | 7.50-8.50 | 12.25-13. 25 | 2.00-2.50 | – | 0.01 | Al 0.90〜1.35 | ||||
| 131 | 03Cr12Ni9Cu2NbTi | 0.03 | 0.50 | 0.50 | 0.040 | 0.030 | 7.50-9.50 | 11.00-12. 50 | 0.50 | 1.50-2.50 | – | Ti 0.80〜1.40 Nb 0.10〜0.50 | ||||
| 132 | 07Cr15Ni5Cu4Nb | 0.07 | 1.00 | 1.00 | 0.040 | 0.030 | 3.50-5.50 | 14.00-15. 50 | – | 2.50-4.50 | – | Nb 0.15〜0.45 | ||||
| 133 | 07Cr17Ni4Cu4Nb(a) | 0Cr17Ni4Cu4Nb(a) | 0.07 | 1.00 | 1.00 | 0.040 | 0.030 | 3.00-5.00 | 15.00-17. 50 | – | 3.00-5.00 | – | Nb 0.15〜0.45 | |||
| 134 | 09Cr17Ni7Al(a) | 0Cr17Ni7Al(a) | 0.09 | 1.00 | 1.00 | 0.040 | 0.030 | 6.50-7.70 | 16.00-18. 00 | – | – | – | Al 0.75〜1.50 | |||
| 135 | 09Cr15Ni7Mo3Al | 0Cr15Ni7Mo2Al | 0.09 | 1.00 | 1.00 | 0.040 | 0.030 | 6.50-7. 70 | 14.00-16. 00 | 2.00-3.00 | – | – | Al 0.75〜1.50 | |||
| 136 | 09Cr12Mn5Ni4Mo3Al | 0Cr12Mn5Ni4Mo3Al | 0.09 | 0.80 | 4.40-5.30 | 0.030 | 0.025 | 4.00-5.00 | 11.00-12. 00 | 2.70-3.30 | – | – | Al 0.50〜1.00 | |||
| 137 | 09Cr17Ni5Mo3N | 0.07-0.11 | 0.50 | 0.50-1.25 | 0.040 | 0.030 | 4.00-5.00 | 16.00-17. 00 | 2.50-3.20 | – | 0.07- 0.13 | – | ||||
| 138 | 08Cr17Ni7AlTi | 0.08 | 1.00 | 1.00 | 0.040 | 0.030 | 6.00-7.50 | 16.00-17. 50 | – | – | – | Al≤0.40 Ti 0.40〜1.20 | ||||
| 139 | 08Cr15Ni25MoTi2AlVB | 0Cr15Ni25MoTi2AlVB | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 24.00-27. 00 | 13.50-16. 00 | 1.00-1.50 | – | – | Al≤0.35 Ti 1.90〜2.35 B 0.001〜0.010 V 0.10〜0.50 | |||
注：表中所列成分除标明范围或最小值，其余均为最大值。
a:可作耐热钢使用。