S280GD equivalent grades: ASTM, EN, JIS, GB, DIN
Cross-reference for S280GD across standard systems. Each match is graded so you can see how safe the substitution is. Hot-dip coated structural steel, guaranteed 280 MPa yield — the purlin grade — full S280GD data sheet.
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 = 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.
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.