The latest national standards for stainless steel grades

Old brand

New brand ( 07.10 )

ASTM

UNS

Austenitic stainless steel

1

1Cr17Mn6Ni5N

12Cr17Mn6Ni5N

SUS201

201

S20100

STS201

1.4372

10Cr17Mn6Ni4N ²⁰

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

04Cr17Ni12MoTi ²⁰

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

twenty one

0Cr18Ni10Ti

06Cr18Ni11Ti

SUS321

321

S32100

STS321

1.4541

04Cr18Ni10Ti ²⁰

321

321

twenty two

0Cr18Ni11Nb

06Cr18Ni11Nb

SUS347

347

S34700

STS347

1.4550

04Cr18Ni10Nb ⁴⁰

347

347

Austenitic - ferritic stainless steel (duplex stainless steel)

twenty three

0Cr26Ni5Mo2

-

SUS329J1

329

S32900

STS329J1

1.4477

-

329J1

329J1

twenty four

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

30Cr13

420J2

420J2

36

7Cr17

68Cr17

SUS440A

440A

S44002

STS440A

-

-

4