S355MC equivalent grades: ASTM, EN, JIS, GB, DIN
S355MC is thermomechanically rolled HSLA steel for cold forming specified in EN 10149-2. Every grade in the database that can stand in for it is listed below, drawn from 5 standard systems, each with the reason it does or does not match exactly. The full S355MC data sheet carries the composition and mechanical tables.
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A1011 HSLAS-F Grade 50, S420MC, S355MC (EN 10149-2) vs S355NC (EN 10149-3) and 2 more sit one step away, differ in a strength minimum or in the quality class rather than in the metallurgy. A572 Grade 50, S355J2, S700MC and 1 more serve in the same applications, but the composition differs enough that the engineer signs it off, not the buyer. Across systems that is 2 in ASTM / ASME, 4 in EN (European), 1 in GB/T (China), 1 in JIS (Japan), 1 in GOST (Russia/CIS).
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| A1011 HSLAS-F Grade 50 | ASTM / ASME | Near | ASTM A1011 High-Strength Low-Alloy with improved Formability, Grade 50 [340]: 340 MPa yield, 410 MPa tensile, inclusion-controlled for bending — the US sheet equivalent. |
| S420MC | EN (European) | Near | Next class in EN 10149-2 (420 MPa) — the usual step up for trailer chassis. |
| S355MC (EN 10149-2) vs S355NC (EN 10149-3) | EN (European) | Near | NC is the normalized-rolled version with the same yield but slightly larger bend radii. |
| Q355 (QStE380TM-type) | GB/T (China) | Near | GB/T 1591 Q355 or the automotive GB/T 3273 grades of 355–380 MPa class. |
| SAPH440 | JIS (Japan) | Near | JIS G3113 hot-rolled automotive structural sheet: yield ≥ 305 MPa, tensile ≥ 440 MPa, good formability. |
| A572 Grade 50 | ASTM / ASME | Functional | Same yield class (345 MPa) as plate/sections, but not thermomechanically rolled and without the guaranteed bend radii. |
| S355J2 | EN (European) | Functional | Normalized/as-rolled structural steel of the same yield; heavier chemistry (C ≤ 0.22), larger bend radii, chosen for plate and sections rather than cold-formed parts. |
| S700MC | EN (European) | Functional | The general cold-forming HSLA grade — roughly half the yield, twice the elongation. |
| 09G2S | GOST (Russia/CIS) | Functional | Similar yield, different route: S355MC is thermomechanically rolled for forming, with much tighter carbon and a bend requirement. Substitute only where the design is about strength rather than about forming. |
Identical, near and functional are defined once on the grade index; the reason column below says which limit differs in each case.
S355MC in ASTM / ASME
- A1011 HSLAS-F Grade 50 — Near ASTM A1011 High-Strength Low-Alloy with improved Formability, Grade 50 [340]: 340 MPa yield, 410 MPa tensile, inclusion-controlled for bending — the US sheet equivalent.
- A572 Grade 50 — Functional Same yield class (345 MPa) as plate/sections, but not thermomechanically rolled and without the guaranteed bend radii.
S355MC in EN (European)
- S420MC — Near Next class in EN 10149-2 (420 MPa) — the usual step up for trailer chassis.
- S355MC (EN 10149-2) vs S355NC (EN 10149-3) — Near NC is the normalized-rolled version with the same yield but slightly larger bend radii.
- S355J2 — Functional Normalized/as-rolled structural steel of the same yield; heavier chemistry (C ≤ 0.22), larger bend radii, chosen for plate and sections rather than cold-formed parts.
- S700MC — Functional The general cold-forming HSLA grade — roughly half the yield, twice the elongation.
S355MC in GB/T (China)
- Q355 (QStE380TM-type) — Near GB/T 1591 Q355 or the automotive GB/T 3273 grades of 355–380 MPa class.
S355MC in JIS (Japan)
- SAPH440 — Near JIS G3113 hot-rolled automotive structural sheet: yield ≥ 305 MPa, tensile ≥ 440 MPa, good formability.
S355MC in GOST (Russia/CIS)
- 09G2S — Functional Similar yield, different route: S355MC is thermomechanically rolled for forming, with much tighter carbon and a bend requirement. Substitute only where the design is about strength rather than about forming.
Superseded names for S355MC
- QStE380TM — SEW 092 (withdrawn): German thermomechanical HSLA grade; direct predecessor with 380 MPa yield.
- FeE355TM — EN 10149-2:1995 (draft names)
- Domex 355 MC — SSAB trade name: Widely used as a generic term for S355MC in Northern Europe.
Key data for S355MC
Full composition, mechanical properties by thickness, heat treatment and applications for S355MC →
Verified against EN 10149-2:2013. Last checked: September 2026.