Different countries and industries use their own stainless steel designation systems—for example, China (GB), Japan (JIS), the United States (ASTM/UNS), and the European Union (EN). While the naming conventions vary, many grades are functionally equivalent across these standards. The following table compares commonly used austenitic stainless steel grades across major national systems, making it a useful reference for international sourcing or technical document conversion.

No China GB Japan US Korea Enrope India Australia China Taiwan
Old New JIS ASTM UNS KS BS EN IS IS CNS
Austenitic Stainless Steel
1 1Cr17Mn6Ni5N 12Cr17Mn6Ni5N SUS201 201 S20100 STS201 1.4372 10Cr17Mn6Ni4N20 201-2 201
2 1Cr18Mn8Ni5N 12Cr18Mn9Ni5N SUS202 202 S20200 STS202 1.4373 – 202
3 1Cr17Ni7 12Cr17Ni7 SUS301 301 S30100 STS301 1.4319 10Cr17Ni7 301 301
4 0Cr18Ni9 06Cr19Ni10 SUS304 304 S30400 STS304 1.4301 07Cr18Ni9 304 304
5 00Cr19Ni10 022Cr19Ni10 SUS304L 304L S30403 STS304L 1.4306 02Cr18Ni11 304L 304L
6 0Cr19Ni9N 06Cr19Ni10N SUS304N1 304N S30451 STS304N1 1.4315 – 304N1 304N1
7 0Cr19Ni10NbN 06Cr19Ni9NbN SUS304N2 XM21 S30452 STS304N2 – – 304N2 304N2
8 00Cr18Ni10N 022Cr19Ni10N SUS304LN 304LN S30453 STS304LN – – 304LN 304LN
9 1Cr18Ni12 10Cr18Ni12 SUS305 305 S30500 STS305 1.4303 – 305 305
10 0Cr23Ni13 06Cr23Ni13 SUS309S 309S S30908 STS309S 1.4833 – 309S 309S
11 0Cr25Ni20 06Cr25Ni20 SUS310S 310S S31008 STS310S 1.4845 – 310S 310S
12 0Cr17Ni12Mo2 06Cr17Ni12Mo2 SUS316 316 S31600 STS316 1.4401 04Cr17Ni12Mo2 316 316
13 0Cr18Ni12Mo3Ti 06Cr17Ni12Mo2Ti SUS316Ti 316Ti S31635 – 1.4571 04Cr17Ni12MoTi20 316Ti  316Ti
14 00Cr17Ni14Mo2 022Cr17Ni12Mo2 SUS316L 316L S31603 STS316L 1.4404 ~02Cr17Ni12Mo2 316L 316L
15 0Cr17Ni12Mo2N 06Cr17Ni12Mo2N SUS316N 316N S31651 STS316N – – 316N 316N
16 00Cr17Ni13Mo2N 022Cr17Ni13Mo2N SUS316LN 316LN S31653 STS316LN 1.4429 – 316LN 316LN
17 0Cr18Ni12Mo2Cu2 06Cr18Ni12Mo2Cu2 SUS316J1 – – STS316J1 – – 316J1 316J1
18 00Cr18Ni14Mo2Cu2 022Cr18Ni14Mo2Cu2 SUS316J1L – – STS316J1L – – – 316J1L
19 0Cr19Ni13Mo3 06Cr19Ni13Mo3 SUS317 317 S31700 STS317 – – 317 317
20 00Cr19Ni13Mo3 022Cr19Ni13Mo3 SUS317L 317L S31703 STS317L 1.4438 – 317L 317L
21 0Cr18Ni10Ti 06Cr18Ni11Ti SUS321 321 S32100 STS321 1.4541 04Cr18Ni10Ti20 321 321
22 0Cr18Ni11Nb 06Cr18Ni11Nb SUS347 347 S34700 STS347 1.455 04Cr18Ni10Nb40 347 347
Austenitic – Ferritic Stainless Steel (Duplex Stainless Steel)
23 0Cr26Ni5Mo2 – SUS329J1 329 S32900 STS329J1 1.4477 – 329J1 329J1
24 00Cr18Ni5Mo3Si2 022Cr19Ni5Mo3Si2N SUS329J3L – S31803 STS329J3L 1.4462 – 329J3L 329J3L
Ferritic stainless steel
25 0Crl3Al 06Crl3Al SUS405 405 S40500 STS405 1.4002 04Cr13 405 405
26 – 022Cr11Ti SUH409 409 S40900 STS409 1.4512 – 409L 409L
27 00Cr12 022Cr12 SUS410L – – STS410L – – 410L 410L
28 1Cr17 10Cr17 SUS430 430 S43000 STS430 1.4016 05Cr17 430 430
29 1Cr17Mo 10Cr17Mo SUS434 434 S43400 STS434 1.4113 – 434 434
30 – 022Cr18NbTi – – S43940 – 1.4509 – 439 439
31 00Cr18Mo2 019Cr19Mo2NbTi SUS444 444 S44400 STS444 1.4521 – 444 444
Martensitic stainless steel
32 1Cr12 12Cr12 SUS403 403 S40300 STS403 – – 403 403
33 1Cr13 12Cr13 SUS410 410 S41000 STS410 1.4006 12Cr13 410 410
34 2Cr13 20Cr13 SUS420J1 420 S42000 STS420J1 1.4021 20Cr13 420 420J1
35 3Cr13 30Cr13 SUS420J2 – – STS420J2 1.4028 30 Cr13 420J2 420J2
36 7Cr17 68Cr17 SUS440A 440A S44002 STS440A – – 440A 440A