A36 equivalent grades: ASTM, EN, JIS, GB, DIN

Cross-reference for A36 across standard systems. Each match is graded so you can see how safe the substitution is. Carbon structural steel — full A36 data sheet.

Cross-reference table

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.

A36 in IS (India)

• IS 2062 E250 A — Identical IS 2062 E250 (Fe 410): yield 250 MPa, Rm 410 MPa min, C ≤ 0.23 — the Indian A36.

A36 in ASTM / ASME

• A283 Gr. C / D — Near Lower-strength plate (205 / 230 MPa yield) for tanks and non-critical structures; Grade D is near A36.
• A1011 CS / SS Gr 36 — Near Hot-rolled sheet/strip < 6 mm; SS Grade 36 has the same 250 MPa yield in sheet form.
• A572 Gr. 50 — Functional HSLA 345 MPa yield — the upgrade for weight-critical shapes; A992 for W-shapes.
• A516 Grade 70 — Functional Structural plate without pressure-vessel quality (grain size, testing, chemistry control) — not accepted for ASME pressure parts except by special provisions.
• A572 Grade 50 — Functional 250 MPa carbon steel — the grade A572-50 replaces when weight matters.

A36 in BS (superseded British)

• 43A / S275 — Near BS 4360 43A (withdrawn; 275 MPa yield) was the historical UK match; today S275JR.

A36 in DIN (superseded German)

• St37-2 — Near Yield 250 MPa, Rm 400–550 MPa — slightly stronger; the usual US substitute on St37 drawings.

A36 in EN (European)

• S235JR — Near Yield 235 MPa (≤ 16 mm), Rm 360–510 MPa, 27 J at +20 °C guaranteed; slightly weaker than A36 but with impact toughness. S275JR (275 MPa) exceeds A36 on yield.
• S275JR — Functional A36 yield 250 MPa is below 275 MPa; A36 is not a drop-in replacement where the design used fy = 275.

A36 in GB/T (China)

• Q235B — Near GB/T 700 Q235B: yield 235 MPa, Rm 370–500 MPa, 27 J at +20 °C. Q255/Q275 are stronger.

A36 in GOST (Russia/CIS)

• St3sp — Near GOST 380 St3sp: yield 245 MPa (≤ 20 mm), Rm 370–480 MPa.

A36 in JIS (Japan)

• SS400 — Near JIS G3101 SS400: yield 245 MPa (≤ 16 mm), Rm 400–510 MPa — the closest Asian match; no chemistry beyond P/S limits.

A36 in AISI / SAE

• 1018 / 1020 — Functional Bar grades with defined chemistry and no guaranteed yield — what buyers receive for 'A36 round bar' is often 1018/1020 hot-rolled.
• 1018 — Functional Structural plate/shape with guaranteed 250 MPa yield — the alternative for welded structures; 1018 is a bar product with no guaranteed properties.

Superseded names for A36

• A7 — ASTM A7 (withdrawn 1967): The predecessor structural steel (33 ksi / 230 MPa yield); A36 replaced it in 1960.
• K02600 — UNS
• SA-36 — ASME BPVC Section II: ASME adoption for non-pressure and limited pressure use (e.g. structural attachments, some vessels to 340 °C).
• Grade 36 — AASHTO M270 / ASTM A709: A709 Grade 36 is the bridge version (with Charpy zones).
• CSA G40.21 300W — Canada: Canadian equivalent (300 MPa yield, slightly stronger).

Key data for A36

Full composition, mechanical properties by thickness, heat treatment and applications for A36 →

Verified against ASTM A36/A36M-19. Last checked: September 2026.