430 equivalent grades: ASTM, EN, JIS, GB, DIN
430 is ferritic chromium stainless steel specified in ASTM A240. What follows is the substitution list: 6 standard systems, and for each candidate the clause that makes it an exact match or stops it being one. The full 430 data sheet carries the composition and mechanical tables.
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430 is cross-certified with 430S17, 1.4016, 10Cr17 and 2 more: the composition windows overlap closely enough that one certificate satisfies the other. 439 / 1.4510, 441 / 1.4509 differ on one limit only — a carbon ceiling, an impact temperature or a strength minimum. 409 / 1.4512, 304, 410 serve the same purpose without being the same steel, so a substitution there needs the design re-checked rather than the certificate. Across systems that is 1 in BS (superseded British), 1 in EN (European), 1 in GB/T (China), 1 in GOST (Russia/CIS), 1 in JIS (Japan), 5 in AISI / SAE.
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| 430S17 | BS (superseded British) | Identical | BS 1449 430S17: C ≤ 0.08, Cr 16–18. |
| 1.4016 | EN (European) | Identical | X6Cr17: C ≤ 0.08, Cr 16–18. Dual-certified 430/1.4016 sheet is standard in Europe. |
| 10Cr17 | GB/T (China) | Identical | GB/T 20878 10Cr17 (formerly 1Cr17). |
| 12Kh17 | GOST (Russia/CIS) | Identical | GOST 5632 12Kh17: C ≤ 0.12, Cr 16–18. |
| SUS430 | JIS (Japan) | Identical | JIS G4305 SUS430: C ≤ 0.12, Cr 16–18. |
| 439 / 1.4510 | AISI / SAE | Near | Ti-stabilized 17 % Cr (S43035 / X3CrTi17): weldable without sensitization, same corrosion class — the upgrade for welded parts. |
| 441 / 1.4509 | AISI / SAE | Near | Nb+Ti dual-stabilized 18 % Cr for exhaust systems and heat exchangers. |
| 409 / 1.4512 | AISI / SAE | Functional | 11 % Cr ferritic for exhausts; cheaper, lower corrosion resistance. |
| 304 | AISI / SAE | Functional | Austenitic 18-8: better corrosion resistance, formability and weldability; 430 replaces it on cost in dry indoor service. |
| 410 | AISI / SAE | Functional | Ferritic 17 % Cr: better corrosion resistance, not hardenable. |
Identical, near and functional are defined once on the grade index; the reason column below says which limit differs in each case.
430 in BS (superseded British)
- 430S17 — Identical BS 1449 430S17: C ≤ 0.08, Cr 16–18.
430 in EN (European)
- 1.4016 — Identical X6Cr17: C ≤ 0.08, Cr 16–18. Dual-certified 430/1.4016 sheet is standard in Europe.
430 in GB/T (China)
- 10Cr17 — Identical GB/T 20878 10Cr17 (formerly 1Cr17).
430 in GOST (Russia/CIS)
- 12Kh17 — Identical GOST 5632 12Kh17: C ≤ 0.12, Cr 16–18.
430 in JIS (Japan)
- SUS430 — Identical JIS G4305 SUS430: C ≤ 0.12, Cr 16–18.
430 in AISI / SAE
- 439 / 1.4510 — Near Ti-stabilized 17 % Cr (S43035 / X3CrTi17): weldable without sensitization, same corrosion class — the upgrade for welded parts.
- 441 / 1.4509 — Near Nb+Ti dual-stabilized 18 % Cr for exhaust systems and heat exchangers.
- 409 / 1.4512 — Functional 11 % Cr ferritic for exhausts; cheaper, lower corrosion resistance.
- 304 — Functional Austenitic 18-8: better corrosion resistance, formability and weldability; 430 replaces it on cost in dry indoor service.
- 410 — Functional Ferritic 17 % Cr: better corrosion resistance, not hardenable.
Superseded names for 430
- 1.4016 / X6Cr17 — EN 10088: European twin (older DIN name X8Cr17).
- S43000 — UNS: 430F (S43020) = free-machining; 430Ti / 439 (S43035) = Ti-stabilized weldable version.
- 430S17 / 430S15 — BS 1449 / BS 970
- CB-30 — ACI / ASTM A743: Cast equivalent.
Key data for 430
Full composition, mechanical properties by thickness, heat treatment and applications for 430 →
Verified against ASTM A240/A240M-22. Last checked: September 2026.