S280GD equivalent grades: ASTM, EN, JIS, GB, DIN
S280GD is hot-dip coated structural steel, guaranteed 280 MPa yield — the purlin grade specified in EN 10346. 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 S280GD data sheet carries the composition and mechanical tables.
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Where a drawing says S280GD, S280GD+Z satisfies it as written, with no concession needed. The near matches are SS Grade 40 (A653), S250GD, S350GD and 2 more; what differ is the tested condition, not the alloy. S275JR serves the same purpose without being the same steel, so a substitution there needs the design re-checked rather than the certificate. Counted by system: 1 in GB/T (China), 1 in ASTM / ASME, 3 in EN (European), 1 in IS (India), 1 in JIS (Japan).
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| S280GD+Z | GB/T (China) | Identical | GB/T 2518 adopts the EN designation. |
| SS Grade 40 (A653) | ASTM / ASME | Near | ASTM A653 Structural Steel Grade 40 [275]: 275 MPa yield, 380 MPa tensile — the US purlin and deck grade. |
| S250GD | EN (European) | Near | One class lower; interchangeable for light purlins if the span table allows. |
| S350GD | EN (European) | Near | One class higher; chosen for deck and long-span purlins. |
| IS 277 Grade 275 | IS (India) | Near | Indian galvanized sheet, 275 MPa yield. |
| SGC400 | JIS (Japan) | Near | JIS G3302 SGC400: yield ≥ 295 MPa, tensile ≥ 400 MPa, A ≥ 18 %; slightly stronger. |
| S275JR | EN (European) | Functional | Uncoated hot-rolled equivalent by yield for members that will be hot-dip galvanized after fabrication. |
Identical, near and functional are defined once on the grade index; the reason column below says which limit differs in each case.
S280GD in GB/T (China)
- S280GD+Z — Identical GB/T 2518 adopts the EN designation.
S280GD in ASTM / ASME
- SS Grade 40 (A653) — Near ASTM A653 Structural Steel Grade 40 [275]: 275 MPa yield, 380 MPa tensile — the US purlin and deck grade.
S280GD in EN (European)
- S250GD — Near One class lower; interchangeable for light purlins if the span table allows.
- S350GD — Near One class higher; chosen for deck and long-span purlins.
- S275JR — Functional Uncoated hot-rolled equivalent by yield for members that will be hot-dip galvanized after fabrication.
S280GD in IS (India)
- IS 277 Grade 275 — Near Indian galvanized sheet, 275 MPa yield.
S280GD in JIS (Japan)
- SGC400 — Near JIS G3302 SGC400: yield ≥ 295 MPa, tensile ≥ 400 MPa, A ≥ 18 %; slightly stronger.
Superseded names for S280GD
- FeE280G — EN 10147:1992: Pre-2000 designation.
- StE280-2Z — DIN 17162 (withdrawn): German structural galvanized grade.
- Z28 — BS 2989: British structural galvanized quality, 28 kgf/mm² ≈ 275 MPa.
Key data for S280GD
Full composition, mechanical properties by thickness, heat treatment and applications for S280GD →
Verified against EN 10346:2015. Last checked: September 2026.