304 equivalent grades: ASTM, EN, JIS, GB, DIN

Cross-reference for 304 across standard systems. Each match is graded so you can see how safe the substitution is. Austenitic chromium-nickel stainless steel — full 304 data sheet.

Cross-reference table

Identical = same composition and mechanical limits within rounding. Near = one limit differs (e.g. carbon max or impact temperature). Functional = interchangeable for most uses after an engineering check.

How the matches are graded

Identical means the chemical composition windows overlap so that material certified to one specification meets the other without deviation, and the mechanical minimums are the same or the other is inside them — mills usually dual-certify. Near means one limit differs (a carbon maximum, an impact temperature, a strength minimum or a delivery condition) and a substitution needs a one-line engineering check. Functional means the grades serve the same purpose but are not the same steel — a designer can often use one for the other, but only after re-checking the design.

304 in BS (superseded British)

• 304S31 / 304S15 — Identical BS 1449 / BS 970 (withdrawn); 304S31 has C ≤ 0.07.

304 in EN (European)

• 1.4301 — Identical X5CrNi18-10: Cr 17.5–19.5, Ni 8–10.5, C ≤ 0.07 — inside the 304 window; dual-certified worldwide.

304 in GB/T (China)

• 06Cr19Ni10 — Identical GB/T 20878 06Cr19Ni10 (formerly 0Cr18Ni9): C ≤ 0.08, Cr 18–20, Ni 8–11.

304 in GOST (Russia/CIS)

• 08Kh18N10 — Identical GOST 5632 08Kh18N10: C ≤ 0.08, Cr 17–19, Ni 9–11.

304 in IS (India)

• IS 6911 X04Cr19Ni9 — Identical Indian designation for 304 (IS 6911 wrought stainless).

304 in JIS (Japan)

• SUS304 — Identical JIS G4304/G4305 SUS304: C ≤ 0.08, Cr 18–20, Ni 8–10.5 — the same limits as ASTM.

304 in AISI / SAE

• 304L — Near S30403: C ≤ 0.030, yield ≥ 170 MPa, tensile ≥ 485 MPa. Same corrosion resistance, preferred for welded sections > 6 mm. Dual-certified 304/304L coil is standard.
• 304H — Near S30409: C 0.04–0.10 for creep strength above 525 °C; grain size ≥ ASTM 7.
• 316 — Functional Adds 2–3 % Mo for chloride pitting resistance (PREN 24 vs 18); replaces 304 in marine and chemical service.
• 430 — Functional Ferritic 17 % Cr without Ni: cheaper, magnetic, lower corrosion resistance — the substitute in appliances and trim.

Superseded names for 304

• 18-8 — Trade/colloquial: Generic name for the 18 % Cr / 8 % Ni austenitic family (301, 302, 304).
• 302 — AISI (S30200): The higher-carbon (≤ 0.15 %) predecessor; 304 replaced it for weldability.
• S30400 — UNS: The unified number used in ASTM/ASME; 304L = S30403, 304H = S30409, 304N = S30451.
• CF8 — ASTM A351 / ACI: Cast equivalent (CF3 = 304L).

Key data for 304

Full composition, mechanical properties by thickness, heat treatment and applications for 304 →

Verified against ASTM A240/A240M-22. Last checked: September 2026.