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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For S280GD the exact matches are S280GD+Z, and material bought as one is accepted as the other without deviation. The near matches are SS Grade 40 (A653), S250GD, S350GD and 2 more; what differ is the tested condition, not the alloy. S275JR serves in the same applications, but the composition differs enough that the engineer signs it off, not the buyer. Across systems that is 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.