304L equivalent grades: ASTM, EN, JIS, GB, DIN
304L is low-carbon austenitic chromium-nickel stainless steel specified in ASTM A240. Below, the grades that can replace it — 5 standard systems in all — with the deciding limit named for each one rather than left to be looked up. The full 304L data sheet carries the composition and mechanical tables.
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For 304L the exact matches are 022Cr19Ni10, 03Kh18N11, SUS304L, and material bought as one is accepted as the other without deviation. 304, 1.4301, 1.4301 sit one step away, differ in a strength minimum or in the quality class rather than in the metallurgy. Functionally interchangeable, 316L, 321, 1-4541 serve a different route to the same duty — check the design, not the analysis. The table holds 1 in GB/T (China), 1 in GOST (Russia/CIS), 1 in JIS (Japan), 3 in AISI / SAE, 3 in EN (European).
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| 022Cr19Ni10 | GB/T (China) | Identical | GB/T 20878 022Cr19Ni10, formerly 00Cr19Ni10: C ≤ 0.030, Cr 18.0–20.0, Ni 8.0–12.0. |
| 03Kh18N11 | GOST (Russia/CIS) | Identical | GOST 5632 03Kh18N11: the Russian low-carbon 18/10 austenitic grade. |
| SUS304L | JIS (Japan) | Identical | JIS G4304/G4305 SUS304L: C ≤ 0.030, Cr 18.0–20.0, Ni 9.0–13.0 — the same grade under the Japanese designation. |
| 304 | AISI / SAE | Near | UNS S30400 allows carbon to 0.08 %. Mechanically a little stronger, and the usual choice where the part is not welded in heavy section. Most coil is dual-certified 304/304L. |
| 1.4301 | EN (European) | Near | X5CrNi18-10 is the standard-carbon version at C ≤ 0.07 %. Same alloy and same corrosion class; 1.4301 sensitises in thick welded section where 1.4307 does not. |
| 1.4301 | EN (European) | Near | UNS S30403: C ≤ 0.03 — the low-carbon version; EN equivalent is 1.4307 (X2CrNi18-9). |
| 316L | AISI / SAE | Functional | UNS S31603 adds 2–2.5 % molybdenum for chloride resistance. Specify it instead of 304L near the sea, in de-icing salt or in pool environments — the low-carbon logic is identical. |
| 321 | AISI / SAE | Functional | Low-carbon route to weld stability; not suitable above ~425 °C for strength. |
| 1-4541 | EN (European) | Functional | X6CrNiTi18-10 (321) reaches weld stability by titanium stabilisation rather than by low carbon, and holds it at 400–550 °C where 304L does not. |
Identical, near and functional are defined once on the grade index; the reason column below says which limit differs in each case.
304L in GB/T (China)
- 022Cr19Ni10 — Identical GB/T 20878 022Cr19Ni10, formerly 00Cr19Ni10: C ≤ 0.030, Cr 18.0–20.0, Ni 8.0–12.0.
304L in GOST (Russia/CIS)
- 03Kh18N11 — Identical GOST 5632 03Kh18N11: the Russian low-carbon 18/10 austenitic grade.
304L in JIS (Japan)
- SUS304L — Identical JIS G4304/G4305 SUS304L: C ≤ 0.030, Cr 18.0–20.0, Ni 9.0–13.0 — the same grade under the Japanese designation.
304L in AISI / SAE
- 304 — Near UNS S30400 allows carbon to 0.08 %. Mechanically a little stronger, and the usual choice where the part is not welded in heavy section. Most coil is dual-certified 304/304L.
- 316L — Functional UNS S31603 adds 2–2.5 % molybdenum for chloride resistance. Specify it instead of 304L near the sea, in de-icing salt or in pool environments — the low-carbon logic is identical.
- 321 — Functional Low-carbon route to weld stability; not suitable above ~425 °C for strength.
304L in EN (European)
- 1.4301 — Near X5CrNi18-10 is the standard-carbon version at C ≤ 0.07 %. Same alloy and same corrosion class; 1.4301 sensitises in thick welded section where 1.4307 does not.
- 1.4301 — Near UNS S30403: C ≤ 0.03 — the low-carbon version; EN equivalent is 1.4307 (X2CrNi18-9).
- 1-4541 — Functional X6CrNiTi18-10 (321) reaches weld stability by titanium stabilisation rather than by low carbon, and holds it at 400–550 °C where 304L does not.
Superseded names for 304L
- X2CrNi18-9 — EN 10088 (current symbolic name): The name and the number 1.4307 are used together; EN 10088-2 lists both.
- X2CrNi19-11 — EN 10088 (older designation): The composition window was restated in a later edition; the material number stayed 1.4307.
- 304S11 — BS 1449 (withdrawn): The British low-carbon 18/8 flat product grade.
- Z3CN18-10 — NF A 35-573 (withdrawn): The French designation for the same alloy.
Key data for 304L
Full composition, mechanical properties by thickness, heat treatment and applications for 304L →
Verified against EN 10088-2:2014 · ASTM A240/A240M. Last checked: October 2026.