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Austenitic stainless steel is the stainless steel grade with the best comprehensive performance and the widest range of applications. It occupies the heaviest share in stainless steel output, and commonly used grades are 304, 316, etc. In addition to iron, austenitic stainless steel generally contains 18% chromium, about 8% nickel, and a small amount of molybdenum, titanium, nitrogen and other elements.
Austenitic stainless steel has good plasticity, toughness, weldability and corrosion resistance, and can be used to make acid-resistant equipment, such as corrosion-resistant containers, pipelines, nitric acid-resistant equipment parts, etc., and can also be used as the main body of stainless steel watch accessories Material.
200 Series Cr-Ni-Mn Austenite Stainless Steel is a group of stainless steels with high manganese content. These alloys are known for their excellent corrosion resistance, low cost, and good formability. They are commonly used in various applications, including household appliances, automotive parts, and construction materials.
| No | China GB | Japan | America | Korea | European Union | India | Australia | China Taiwan | |||
| Old Grade | New Grade | JIS | ASTM | UNS | KS | EN | IS | AS | 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 stainless steel, ferrite 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 | |
| Ferrite 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 | |
| Martensite 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 | |
The common grades of the 300 series Cr-Ni Austenite stainless steel include:
304 (UNS S30400): A widely used stainless steel grade known for its versatility, good corrosion resistance, and ability to be easily fabricated.
316 (UNS S31600): A stainless steel grade that contains additional molybdenum, providing enhanced corrosion resistance, especially in environments with chlorides or acids.
321 (UNS S32100): A stabilized stainless steel grade with the addition of titanium, which prevents the formation of carbides during welding and high-temperature applications.
The main properties of the 300 series Cr-Ni Austenite stainless steel include:
Corrosion resistance: These alloys exhibit excellent resistance to corrosion in various environments, including acids, alkaline solutions, and chloride-containing media.
High strength: They have good mechanical strength, making them suitable for structural applications.
Formability: The austenitic structure allows for good formability, enabling these alloys to be easily shaped, bent, and fabricated.
Weldability: The 300 series Cr-Ni Austenite stainless steel can be readily welded using various techniques, including gas tungsten arc welding (GTAW) or shielded metal arc welding (SMAW).
