Material number 1.0345: P235GH
1.0345 is the European material number (Werkstoffnummer, EN 10027-2) for P235GH, non-alloy steel for pressure purposes with elevated-temperature properties specified in EN 10028-2.
Reading 1.0345 digit by digit
An EN 10027-2 number has the form 1.XXYY. The leading 1 marks it as steel. The pair 03 is the steel group, and for this number that group is steels with < 0.12 % C or Rm < 400 MPa. The final pair 45 is a sequential count inside that group and carries no meaning of its own — 1.0345 is simply the 45th entry registered there.
The group digits are the useful part. Reading 03 tells you what kind of steel you are looking at before you know anything else about it, and the 6 other numbers from group 03 held here are listed below.
1.0345 identity card
| Item | Value |
|---|---|
| Material number (EN 10027-2) | 1.0345 |
| Symbolic grade name | P235GH |
| Steel group | 03 — steels with < 0.12 % C or Rm < 400 MPa |
| Sequential number in group | 45 |
| Specified in | EN 10028-2 |
| Steel family | Pressure vessel steel |
| Yield, first condition in the table | 235 MPa (≤ 16 mm, room temperature) |
| Tensile, same condition | 360–480 MPa |
| Cross-references held | 4 grades in 2 systems |
P235GH (1.0345) is the entry grade of EN 10028-2: 235 MPa yield at room temperature and, unlike a structural steel, guaranteed proof strength up to 400 °C.
Full data sheet for P235GH → · Equivalent grades → · EN 10028-2 →
Group 03 — the neighbouring numbers
| Material number | Grade | Type |
|---|---|---|
| 1.0301 | SAE 1010 | Low-carbon steel for cold forming, welding and case hardening |
| 1.0301 | C10 | Unalloyed low-carbon case-hardening steel |
| 1.0330 | DC01 | Cold-rolled low-carbon steel for cold forming |
| 1.0332 | DD11 | Hot-rolled low-carbon steel for cold forming |
| 1.0332 | St 22 | Withdrawn DIN designation for hot-rolled mild steel sheet for cold forming |
| 1.0350 | DX52D | Hot-dip coated low-carbon steel for drawing |
Same group digits, so the same broad class of steel. The sequential digits do not rank them.