Material number 1.0576: S355J2H
1.0576 is the European material number (Werkstoffnummer, EN 10027-2) for S355J2H, non-alloy structural steel for hollow sections, 355 MPa, −20 °C impact specified in EN 10219.
Reading 1.0576 digit by digit
An EN 10027-2 number has the form 1.XXYY. The leading 1 marks it as steel. The pair 05 is the steel group, and for this number that group is steels 0.25–0.55 % C or Rm 500–700 MPa. The final pair 76 is a sequential count inside that group and carries no meaning of its own — 1.0576 is simply the 76th entry registered there.
The group digits are the useful part. Reading 05 tells you what kind of steel you are looking at before you know anything else about it, and the 5 other numbers from group 05 held here are listed below.
1.0576 identity card
| Item | Value |
|---|---|
| Material number (EN 10027-2) | 1.0576 |
| Symbolic grade name | S355J2H |
| Steel group | 05 — steels 0.25–0.55 % C or Rm 500–700 MPa |
| Sequential number in group | 76 |
| Specified in | EN 10219 |
| Steel family | Structural steel |
| Yield, first condition in the table | 355 MPa (EN 10219 cold-formed, t ≤ 16 mm) |
| Tensile, same condition | 470–630 MPa |
| Cross-references held | 8 grades in 5 systems |
S355J2H (1.0576) is the high-strength hollow-section grade: 355 MPa yield, 470–630 MPa tensile, 27 J at −20 °C, SHS/RHS/CHS to EN 10219 and EN 10210. Chemistry, tolerances, buckling curves, A500 Grade C / A1085 / STKR490 equivalents.
Full data sheet for S355J2H → · Equivalent grades → · EN 10219 →
Group 05 — the neighbouring numbers
| Material number | Grade | Type |
|---|---|---|
| 1.0503 | C45 | Medium-carbon steel for quenching and tempering |
| 1.0529 | S350GD | Hot-dip coated structural steel, guaranteed 350 MPa yield — deck and long-span profiles |
| 1.0565 | P355NH | Weldable fine-grain normalized steel for pressure purposes, elevated temperature |
| 1.0570 | St52-3 | General structural steel (DIN 17100, withdrawn) — today S355J2 / S355JR |
| 1.0577 | S355J2 | Non-alloy hot-rolled structural steel, −20 °C impact |
Same group digits, so the same broad class of steel. The sequential digits do not rank them.