St 22 equivalent grades: ASTM, EN, JIS, GB, DIN
Cross-reference for St 22 across standard systems. Each match is graded so you can see how safe the substitution is. Withdrawn DIN designation for hot-rolled mild steel sheet for cold forming — full St 22 data sheet.
Cross-reference table
| Grade | System | Match | Why / differences |
|---|---|---|---|
| DD11 | EN (European) | Identical | EN 10111 DD11 is the direct replacement: same chemistry envelope, same role as the general hot-rolled forming sheet. Any supplier asked for St 22 today will quote DD11, and the certificate will say DD11. |
| A1011 CS Type B | ASTM / ASME | Near | ASTM A1011 Commercial Steel Type B covers the same ground in US practice. |
| SPHC | JIS (Japan) | Near | JIS G3131 SPHC is the Japanese commercial hot-rolled forming grade at the same level: C ≤ 0.15, tensile ≥ 270 MPa, no guaranteed yield. |
| S235JR | EN (European) | Functional | Often offered as a substitute and often wrong: S235JR is a structural grade with a guaranteed yield and impact test, and it is less formable. Use it only if the part is structural rather than formed. |
| DD12 / DD13 | EN (European) | Functional | The next two forming levels in EN 10111, for parts that split in DD11. The historic ladder ran St 22 → St 23 → St 24 in the same way. |
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.
St 22 in EN (European)
- DD11 — Identical EN 10111 DD11 is the direct replacement: same chemistry envelope, same role as the general hot-rolled forming sheet. Any supplier asked for St 22 today will quote DD11, and the certificate will say DD11.
- S235JR — Functional Often offered as a substitute and often wrong: S235JR is a structural grade with a guaranteed yield and impact test, and it is less formable. Use it only if the part is structural rather than formed.
- DD12 / DD13 — Functional The next two forming levels in EN 10111, for parts that split in DD11. The historic ladder ran St 22 → St 23 → St 24 in the same way.
St 22 in ASTM / ASME
- A1011 CS Type B — Near ASTM A1011 Commercial Steel Type B covers the same ground in US practice.
St 22 in JIS (Japan)
- SPHC — Near JIS G3131 SPHC is the Japanese commercial hot-rolled forming grade at the same level: C ≤ 0.15, tensile ≥ 270 MPa, no guaranteed yield.
Superseded names for St 22
- StW 22 — DIN 1614-1: the full historic designation — W for Weichstahl (mild steel)
- St 22 — DIN 1614: the short form seen on older drawings
- RSt 22 — DIN 1614: the rimmed-steel variant, no longer produced
Key data for St 22
Full composition, mechanical properties by thickness, heat treatment and applications for St 22 →
Verified against DIN 1614-1 (withdrawn); EN 10111:2008 for the replacement. Last checked: September 2026.