S250GD equivalent grades: ASTM, EN, JIS, GB, DIN
Cross-reference for S250GD across standard systems. Each match is graded so you can see how safe the substitution is. Hot-dip coated structural steel, guaranteed 250 MPa yield — full S250GD data sheet.
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| S250GD+Z | GB/T (China) | Identical | GB/T 2518 adopts the EN designation (also listed as 250 by yield). |
| IS 277 Grade 250 | IS (India) | Identical | Indian galvanized sheet with 250 MPa yield. |
| SS Grade 37 (A653) | ASTM / ASME | Near | ASTM A653 Structural Steel Grade 37 [255]: 255 MPa yield, 360 MPa tensile — the closest US structural galvanized grade; SS Grade 33 [230] sits just below. |
| S280GD | EN (European) | Near | Next class up (280 MPa); the common purlin grade when S250GD is not stocked. |
| SGC340 | JIS (Japan) | Near | JIS G3302 SGC340: yield ≥ 245 MPa, tensile ≥ 340 MPa, A ≥ 20 % — Japanese structural galvanized. |
| S350GD | EN (European) | Functional | Same chemistry family, 350 MPa yield; used where span tables require it. |
| DX51D | EN (European) | Functional | Same substrate family without a guaranteed yield — for bending and profiling that is not load-bearing. |
| S235JR | EN (European) | Functional | Uncoated hot-rolled structural steel of similar strength for members that will be post-galvanized. |
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.
S250GD in GB/T (China)
- S250GD+Z — Identical GB/T 2518 adopts the EN designation (also listed as 250 by yield).
S250GD in IS (India)
- IS 277 Grade 250 — Identical Indian galvanized sheet with 250 MPa yield.
S250GD in ASTM / ASME
- SS Grade 37 (A653) — Near ASTM A653 Structural Steel Grade 37 [255]: 255 MPa yield, 360 MPa tensile — the closest US structural galvanized grade; SS Grade 33 [230] sits just below.
S250GD in EN (European)
- S280GD — Near Next class up (280 MPa); the common purlin grade when S250GD is not stocked.
- S350GD — Functional Same chemistry family, 350 MPa yield; used where span tables require it.
- DX51D — Functional Same substrate family without a guaranteed yield — for bending and profiling that is not load-bearing.
- S235JR — Functional Uncoated hot-rolled structural steel of similar strength for members that will be post-galvanized.
S250GD in JIS (Japan)
- SGC340 — Near JIS G3302 SGC340: yield ≥ 245 MPa, tensile ≥ 340 MPa, A ≥ 20 % — Japanese structural galvanized.
Superseded names for S250GD
- FeE250G — EN 10147:1992: Structural galvanized designation before the S…GD names (EN 10147:2000).
- StE250-2Z — DIN 17162 (withdrawn): German structural galvanized grade; ≈ S250GD+Z.
- Z25 / Z28 — BS 2989: British structural galvanized qualities by yield in kgf/mm².
Key data for S250GD
Full composition, mechanical properties by thickness, heat treatment and applications for S250GD →
Verified against EN 10346:2015. Last checked: September 2026.