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)，％CSiMnPSNiCrMoCuN其它元素115Cr17Mn6Ni5N1Cr17Mn6Ni5N0.1501.005.50-7.500.0450.0303.50-5.5016.00-18. 00––0.05-0.25–215Cr18Mn8Ni5N1Cr18Mn8Ni5N0.1501.007.50-10.500.0450.0304.00-6.0017.00-19. 00––0.05-0.25–320Cr13Mn9Ni42Cr13Mn9Ni40.15-0.300.808.00-10.000.0450.0253.70-5.0012.00-14. 00––––420Cr15Mn15Ni2N2Cr15Mn15Ni2N0.15-0.251.0014.00-16. 000.0450.0301.50-3.0014.00-16. 00––0.15-0.30–553Cr21Mn9Ni4N(a)5Cr21Mn9Ni4N(a)0.48-0.580.358.00-10.000.0400.0303.25-4.5020.00-22. 00––0.35-0.50–626Cr18Mn12Si2N(a)3Cr18Mn12Si2N(a)0.22-0.301.40-2.2010.50-12. 500.0450.030–17.00-19. 00––0.22-0.33–722Cr20Mn9Ni2Si2N(a)2Cr20Mn9Ni2Si2N(a)0.17-0.261.80-2.708.50-11.000.0450.0302.00-3.0018.00-21. 00–0.20-0.30–815Cr17Ni71Cr17Ni70.1501.002.000.0450.0306.00-8.0016.00-18. 00––0.10–903Cr17Ni70. 0301.002. 000. 0450. 0306. 00-8. 0016. 00-18. 00––0. 20–1003Cr17Ni7N0. 0301.002. 000. 0450. 0306. 00-8. 0016. 00-18. 00––0. 07-0. 20–1117Cr18Ni92Cr18Ni90.13-0.211.002.000.0450.0258.00-10.5017.00-19. 00––––1215Cr18Ni91Cr18Ni90.1501.002.000.0450.0308.00-10.0017.00-19. 00––0.10–1315Cr18Ni9Si3(a)1Cr18Ni9Si3(a)0.1502.00-3.002.000.0450.0308.00-10.0017.00-19. 00––0.10–14Y15Cr18Ni9Y1Cr18Ni90.1501.002.000.02030.1508.00-10.0017.00-19. 00(c)–––15Y15Cr18Ni9SeY1Cr18Ni9Se0.1501.002.000.0200.0608.00-10.0017.00-19. 00–––Se≥0.151608Cr19Ni9(a)0Cr18Ni9(a)0.0801.002.000.0450.0308.00-11.0018.00-20. 00––––1703Cr19Ni1000Cr19Ni100.0301.002.000.0450.0308.00-12.0018.00-20. 00––––1807Cr19Ni90.04-0.101.002.000.0450.0308.00-10.5018.00-20. 00––––1905Cr19Ni10Si2NbN0.04-0.061.00-2.000.800.0450.0309.00-10.0018.00-19. 00––0.12-0.18Nb 0. 03-0.082008Cr18Ni9Cu20Cr18Ni9Cu20.0801.002.000.0450.0308.00-10.5017.00-19. 00–1.00- 3.00––2108Cr18Ni9Cu40Cr18Ni9Cu30.0801.002.000.0450.0308.50-10.5017.00-19. 00–3.00- 4.00––2208Cr19Ni9N0Cr19Ni9N0.0801.002.000.0450.0308.00-11.0018.00-20. 00––0.10-0.16–2308Cr19Ni9NbN0Cr19Ni10NbN0.0801.002.000.0450.0307.50-10.5018.00-20. 00––0.15-0.30Nb≥0.152403Cr19Ni10N00Cr18Ni10N0.0301.002.000.0450.0308.00-12.0018.00-20. 00––0.10-0.16–2512Cr18Ni121Cr18Ni120.1201.002.000.0450.03010.50-13. 0017.00-19. 00––––2608Cr18Ni120Cr18Ni120.0801.002.000.0450.03011.00-13. 5016.50-19. 00––––2708Cr16Ni180Cr16Ni180.0801.002.000.0450.03017.00-19. 0015.00-17. 00––––2808Cr20Ni110.0801.002.000.0450.03010.00-12. 0019.00-21. 00––––2922Cr21Ni12N(a)2Cr21Ni12N(a)0.15-0.280.75-1.251.00-1.600.0350.03010.50-12. 5020.00-22. 00––0.15-0.30–3020Cr23Ni13(a)2Cr23Ni13(a)0.2001.002.000.0350.03012.00-15. 0022.00-24. 00––––3108Cr23Ni13(a)0Cr23Ni13(a)0.0801.002.000.0450.03012.00-15. 0022.00-24. 00––––3218Cr23Ni181Cr23Ni180.1801.002.000.0350.02517.00-20. 0022.00-25. 00–––3325Cr25Ni20(a)2Cr25Ni20(a)0.2501.502.000.0450.03019.00-22. 0024.00-26. 00––––3408Cr25Ni20(a)0Cr25Ni20(a)0.0801.502.000.0450.03019.00-22. 0024.00-26. 00––––3503Cr25Ni22Mo3N0.0300.402.000.0300.01521.00-23. 0024.00-26. 002.00-3.00–0.10-0.16–3602Cr20Ni18Mo6CuN0.0200.801.000.0300.01019.50-20. 5017.50-18. 506.00-6.500.50-1.000.18-0.22–3715Cr16Ni35(a)1Cr16Ni35(a)0.1501.502.000.0400.03033.00-37. 0014.00-17. 00––––3808Cr17Ni12Mo2(a)0Cr17Ni12Mo2(a)0.0801.002.000.0450.03010.00-14. 0016.00-18. 002.00-3.00–––3903Cr17Ni12Mo200Cr17Ni14Mo20.0301.002.000.0450.03010.00-14. 0016.00-18. 002.00-3.00–––4007Cr17Ni12Mo2(a)1Cr17Ni12Mo2(a)0.04-0.101.002.000.0450.03010.00-14. 0016.00-18. 002.00-3.00–––4108Cr17Ni12Mo2Ti(a)0Cr18Ni12Mo2Ti(a)0.0801.002.000.0450.03010.00-14. 0016.00-18. 002.00-3.00––Ti≥5C4208Cr17Ni12Mo2Nb0.0801.002.000.0450.03010.00-14. 0016.00-18. 002.00-3.00–0.10Nb 10C〜1.104308Cr17Ni12Mo2N0Cr17Ni12Mo2N0.0801.002.000.0450.03010.50-13. 0016.00-18. 002.00-3.00–0.10-0.16–4403Cr17Ni12Mo2N00Cr17Ni13Mo2N0.0301.002.000.0450.03010.00-13. 0016.00-18. 002.00-3.00–0.10-0.16–4508Cr18Ni12Mo2Cu20Cr18Ni12Mo2Cu20.0801.002.000.0450.03010.00-14. 5017.00-19. 001.20-2.751.00-2.50––4603Cr18Ni14Mo2Cu200Cr18Ni14Mo2Cu20.0301.002.000.0450.03012.00-16. 0017.00-19. 001.20-2.751.00-2.50––4708Cr19Ni13Mo40Cr19Ni13Mo30.0801.002.000.0450.03011.00-15. 0018.00-20. 003.00-4.00–––4803Cr19Ni13Mo4(a)00Cr19Ni13Mo3(a)0.0301.002.000.0450.03011.00-15. 0018.00-20. 003.00-4.00–––4904Cr18Ni16Mo50Cr18Ni16Mo50.0401.002.500.0450.03015.00-17. 0016.00-19. 004.00-6.00–––5003Cr19Ni16Mo5N0.0301.002.000.0450.03013.50-17. 5017.00-20. 004.00-5.00–0.10-0.20–5103Cr19Ni13Mo4N0.0301.002.000.0450.03011.00-15. 0018.00-20. 003.00-4.00–0.10-0.22–5203Cr18Ni14Mo300Cr18Ni14Mo20.0301.002.000.0250.01013.00-15. 0017.00-19. 002.50-3.500.500.10–5303Cr18Ni15Mo4N00Cr18Ni15Mo4N0.0301.002.000.0250.01014.00-16. 0017.00-19. 002.35-4.200.500.10-0.20–5408Cr18Ni10Ti(a)0Cr18Ni10Ti(a)0.0801.002.000.0450.0309.00-12.0017.00-19. 00–––Ti 5C〜0.705507Cr18Ni11Ti1Cr18Ni11Ti0.04-0.100.752.000.0300.0309.00-13.0017.00-20. 00–––Ti 4C〜0.605602Cr25Ni22Mo8Mn3CuN0.0200.502.00-4.000.0300.00521.00-23. 0024.00-25. 007.00-8.000.30-0.600.45-0.55–5703Cr24Ni17Mo5Mn6NbN0.0301.005.00-7.000.0300.01016.00-18. 0023.00-25. 004.00-5.00–0.40-0.60N≤0.105808Cr18Ni11Nb(a)0Cr18Ni11Nb(a)0.0801.002.000.0450.0309.00-12.0017.00-19. 00–––Nb 10C〜1.105907Cr18Ni11Nb(a)1Cr19Ni11Nb(a)0.04-0.101.002.000.0450.0309.00-12.0017.00-19. 00–––Nb 8C〜1.106045Cr14Ni14W2Mo(a)4Cr14Ni14W2Mo(a)0.40-0.500.800.700.0350.03013.00-15. 0013.00-15. 000.25-0.40––W 2.00〜2.756125Cr18Ni8W2(a)2Cr18Ni8W2(a)0.21-0.280.30-0.800.700.0300.0257.50-8.5017.00-19. 00–––W 2.00〜2.506208Cr18Ni13Si4(a)0Cr18Ni13Si4(a)0.0803.00-5.002.000.0450.03011.50-15. 0015.00-20. 00–––(b)6302Cr18Ni15Si4Nb0.0203.70-4.502.000.0200.02014.00-15. 5017.00-18. 50–––Nb(d)0.40〜0.806402Cr21Ni26Mo5Cu20.0201.002.000.0450.03023.00-28. 0019.00-23. 004.00-5.001.00-2.000.10–6520Cr20Ni14Si2(a)1Cr20Ni14Si2(a)0.2001.50-2.501.500.0350.03012.00-15. 0019.00-22. 00––––6620Cr25Ni20Si2(a)1Cr25Ni20Si2(a)0.2001.50-2.501.500.0350.03018.00-21. 0024.00-27. 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)，％CSiMnPSNiCrMoCuN其它元素6714Cr18Ni11Si4AlTi1Cr18Ni11Si4AlTi0.10-0.183.40-4.000.800.0350.03010.00-12. 0017.50-19. 50–––Ti 0.40〜0.70Al 0.10〜0.306803Cr19Ni5Mo3Si2N00Cr18Ni5Mo3Si20.0301.30-2.001.00-2.000.0350.0304.50-5.5018.00-19. 502.50-3.00–0.05-0.12–6912Cr21Ni5Ti1Cr21Ni5Ti0.09-0.140.080.800.0350.0304.80-5.8020.00-22. 00–––Ti 5(C—0.02)〜0.807003Cr22Ni5Mo3N0.0301.002.000.0300.0204.50-6.5021.00-23. 002.50-3.50–0.08-0.20–7103Cr23Ni4N0.0301.002.500.0350.0303.00-5.5021.50-24. 500.05-0.600.05-0.600.05-0.20–7203Cr25Ni5Mo2N0.0301.002.000.0300.0305.50-6.5024.00-26. 001.20-2.50–0.10-0.20–7303Cr25Ni7Mo3WCuN0.0301.000.750.0300.0305.50-7.5024.00-26. 002.50-3.500.20-0.800.20-0.30W 0.10〜0.507404Cr25Ni6Mo3Cu2N0.0401.001.500.0350.0304.50-6.5024.00-27. 002.90-3.901.50-2.500.10-0.25–7503Cr25Ni7Mo4N0.0300.801.200.0350.0206.00-8.0024.00-26. 003.00-5.000.500.24-0.32–7603Cr25Ni7Mo4WCuN0.0301.001.000.0300.0106.00-8.0024.00-26. 003.00-4.000.50-1.000.20-0.30W 0.50〜1.00Cr+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)，％CSiMnPSNiCrMoCuN其它元素7708Cr13Al(a)0Cr13Al(a)0.081.001.000.0400.030(b)11.50-14. 50–––Al 0.10 〜0.307808Cr130Cr130.081.001.000.0400.030(b)11.50-13. 50––––7908Cr11Ti0Cr11Ti0.081.001.000.0400.030(b)10.50-11. 75–––Ti 6C 〜0.758003Cr11Ti0.031.001.000.0400.030(b)10.50-11. 75–––Ti 6C 〜0.758103Cr11NbTi0.031.001.000.0400.020(b)10.50-11. 70––0.030Ti+Nb:8(C+N)+0.08～0.75Ti ≥0.058203Cr12(a)00Cr12(a)0.031.001.000.0400.030(b)11.00-13. 50––––8303Cr12Ni0.031.001.500.0400.0150.30-1.0010.50-12. 50––0.030–8412Cr151Cr150.121.001.000.0400.030(b)14.00-16. 00––––8512Cr17(a)1Cr17(a)0.121.001.000.0400.030(b)16.00-18. 00––––86Y12Cr17Y1Cr170.121.001.250.040≥0.15(b)16.00-18. 00(c)–––8703Cr18Ti00Cr170.030.751.000.0400.030(b)16.00-19. 00–––Ti或Nb: 0.10〜1.008812Cr17Mo1Cr17Mo0.121.001.000.0400.030(b)16.00-18. 000.75-1.25–––8912Cr17MoNb0.121.001.000.0400.030(b)16.00-18. 000.75-1.25––Nb 5C〜0.809003Cr18MoTi0.031.001.000.0400.030(b)16.00-19. 000.75-1.50–0.025Ti,Nb,Zr 或其组合：8×（C%+N%）～ 0.809103Cr18NbTi0.031.001.000.0400.015(b)17.50-18. 50–––Ti 0.10～0.60Nb≥0.30+3C9203Cr18Mo2NbTi00Cr18Mo20.031.001.000.0400.0301.0017.50-19. 501.75-2.50–0.035(Ti+Nb):[0.20+4(C+N)] ～0.809301Cr27Mo00Cr27Mo0.010.400.400.0300.020(d)25.00-27. 500.75-1.500.200.015(d)9401Cr30Mo200Cr30Mo20.010.400.400.0300.020(d)28.50-32. 001.50-2.500.200.015(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)，％CSiMnPSNiCrMoCuN其它元素9515Cr121Cr120.150.501.000.0400.030(b)11.50-13. 00––––9615Cr131Cr130.151.001.000.0400.030(b)11.50-13. 50––––9705Cr13Ni5Mo0.050.600.50-1.000.0300.0303.50-5.5011.50-14. 000.50-1.00–––98Y15Cr13Y1Cr130.151.001.250.045≥0.15(b)12.00-14. 00(c)––9921Cr13(a)2Cr13(a)0.16-0.251.001.000.0400.030(b)12.00-14. 00––––100Y25Cr13Ni2Y2Cr13Ni20.20-0.300.500.80-1.200.08-0.120.15-0.251. 50-2.0012.00-14. 00(c)–––10131Cr133Cr130.26-0.351.001.000.0400.030(b)12.00-14. 00––––102Y31Cr13Y3Cr130.26-0.351.001.250.045≥0.15(b)12.00-14. 00(c)–––10341Cr134Cr130.36-0.450.600.800.0400.030(b)12.00-14. 00––––10414Cr17Ni2(a)1Cr17Ni2(a)0.11-0.170.800.800.0400.0301.50-2.5016.00-18. 00––––10516Cr17Ni3(a)0.12-0.200.801.000.0400.0302.00-3.0015.00-18. 00––––10668Cr177Cr170.60-0.751.001.000.0400.030(b)16.00-18. 00(d)–––10785Cr178Cr170.75-0.951.001.000.0400.030(b)16.00-18. 00(d)–––108108Cr1711Cr170.95-1.201.001.000.0400.030(b)16.00-18. 00(d)–––109Y108Cr17Y11Cr170.95-1.201.001.250.045≥0.15(b)16.00-18. 00(d)–––11095Cr189Cr180.90-1.000.800.800.0400.030(b)17.00-19. 00(d)–––111108Cr17Mo9Cr18Mo0.95-1.100.800.800.0400.030(b)16.00-18. 000.40-0.70–––11290Cr18MoV9Cr18MoV0.85-0.950.800.800.0400.030(b)17.00-19. 001.00-1.30––V 0.07〜0.1211310Cr5Mo(a)1Cr5Mo(a)0.101.001.000.0400.030(b)4.00-6.000.45-0.65–––11412Cr12Mo(a)1Cr12Mo(a)0.10-0.150.500.30-0.500.0400.0300.30-0.6011.50-13. 000.30-0.600.30––11513Cr13Mo(a)1Cr13Mo(a)0.08-0.180.601.000.0400.030(b)11.50-14. 000.30-0.60–––11632Cr13Mo3Cr13Mo0.28-0.350.801.000.0400.030(b)12.00-14. 000.50-1.00–––11715Cr11MoV(a)1Cr11MoV(a)0.11-0.180.500.600.0400.0300.6010.00-11. 500.50-0.70––V 0.25〜0.4011815Cr12WMoV(a)1Cr12WMoV(a)0.12-0.180.500.50-0.900.0400.0300.40-0.8011.00-13. 000.50-0.700.30–W 0.70〜1.10 V 0.15〜0.30119158Cr12MoV(a)1Cr12MoV(a)1.45-1.700.400.350.0300.025–11.00-12. 500.40-0.60––V 0.15〜0.3012023Cr12MoV(a)2Cr12MoV(a)0.18-0.240.10- 0.500.30-0.800.0300.0250.30-0.6011.00-12. 500.80-1.200.30–V 0.25〜0.3512118Cr12MoVNbN(a)2Cr12MoVNbN(a)0.15-0.200.500.50-1.000.0400.030(b)10.00-13. 000.30-0.90–0.05- 0.10V 0.10〜0.40 Nb 0.20〜0.6012213Cr11Ni2W2MoV(a)1Cr11Ni2W2MoV(a)0.10-0.160.600.600.0350.0301.40-1.8010.50-12. 000.35-0.50––W 1.50〜2.00 V 0.18〜0.3012323Cr12NiWMoV(a)2Cr12NiMoWV(a)0.20-0.250.500.50-1.000.0300.0250.50-1.0011.00-12. 500.90-1.250.30–W 0.9〜1.25， V 0.20〜0.3012413Cr14Ni3W2VB(a)1Cr14Ni3W2VB(a)0.10-0.160.600.600.3000.0302.80-3.4013.00-15. 00–––W 1.60~2.20 Ti≤0.05，B≤0.004 V 0.18~0.2812514Cr12Ni2WMoVNb(a)1Cr12Ni2WMoVNb(a)0.11-0.170.600.600.0300.0251.80-2.2011.00-12. 000.80-1.20––W 0.70~1.00， V 0.20~0.30 Nb 0.15~0.3012615Cr11NiMoNbVN(a)2Cr11NiMoNbVN(a)0.15-0.200.500.50-0.800.0200.0150.30-0.6010.00-12. 000.60-0.90V 0.20~0.30，N 0.04~0.09，Cu≤0.1，Al≤0.30,Nb 0.20~0.6012745Cr9Si3(a)4Cr9Si2(a)0.40-0.503.00- 3.500.600.0300.030(b)7.50-9.50––––12840Cr10Si2Mo(a)4Cr10Si2Mo(a)0.35-0.451.90- 2.600.700.0350.030(b)9.00-10.500.70-0.90–––12980Cr20Si2Ni1(a)8Cr20Si2Ni(a)0.75-0.851.75- 2.250.20-0.600.0300.0301.15-1.6519.00-20. 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)，％CSiMnPSNiCrMoCuN其它元素13005Cr13Ni8Mo2Al0.050.100.200.0100.0087.50-8.5012.25-13. 252.00-2.50–0.01Al 0.90〜1.3513103Cr12Ni9Cu2NbTi0.030.500.500.0400.0307.50-9.5011.00-12. 500.501.50-2.50–Ti 0.80〜1.40 Nb 0.10〜0.5013207Cr15Ni5Cu4Nb0.071.001.000.0400.0303.50-5.5014.00-15. 50–2.50-4.50–Nb 0.15〜0.4513307Cr17Ni4Cu4Nb(a)0Cr17Ni4Cu4Nb(a)0.071.001.000.0400.0303.00-5.0015.00-17. 50–3.00-5.00–Nb 0.15〜0.4513409Cr17Ni7Al(a)0Cr17Ni7Al(a)0.091.001.000.0400.0306.50-7.7016.00-18. 00–––Al 0.75〜1.5013509Cr15Ni7Mo3Al0Cr15Ni7Mo2Al0.091.001.000.0400.0306.50-7. 7014.00-16. 002.00-3.00––Al 0.75〜1.5013609Cr12Mn5Ni4Mo3Al0Cr12Mn5Ni4Mo3Al0.090.804.40-5.300.0300.0254.00-5.0011.00-12. 002.70-3.30––Al 0.50〜1.0013709Cr17Ni5Mo3N0.07-0.110.500.50-1.250.0400.0304.00-5.0016.00-17. 002.50-3.20–0.07- 0.13–13808Cr17Ni7AlTi0.081.001.000.0400.0306.00-7.5016.00-17. 50–––Al≤0.40 Ti 0.40〜1.2013908Cr15Ni25MoTi2AlVB0Cr15Ni25MoTi2AlVB0.081.002.000.0450.03024.00-27. 0013.50-16. 001.00-1.50––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。
附录A：部分不锈钢、耐热钢牌号的物理性能参数表B： 各国不锈钢及耐热钢牌号对照附录C： 不锈钢及耐热钢标准牌号应用表