Material number 1.0330: DC01
1.0330 is the European material number (Werkstoffnummer, EN 10027-2) for DC01, cold-rolled low-carbon steel for cold forming specified in EN 10130.
Reading 1.0330 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 30 is a sequential count inside that group and carries no meaning of its own — 1.0330 is simply the 30th 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.
1.0330 identity card
| Item | Value |
|---|---|
| Material number (EN 10027-2) | 1.0330 |
| Symbolic grade name | DC01 |
| Steel group | 03 — steels with < 0.12 % C or Rm < 400 MPa |
| Sequential number in group | 30 |
| Specified in | EN 10130 |
| Steel family | Cold-rolled & coated sheet |
| Yield, first condition in the table | 140–280 MPa (0.35 ≤ t < 0.70 mm) |
| Tensile, same condition | 270–410 MPa |
| Cross-references held | 9 grades in 7 systems |
DC01 (1.0330, ex St12) is the base cold-rolled mild steel sheet of EN 10130: 140–280 MPa yield, 270–410 MPa tensile, 28 % elongation. Composition, forming class, coating variants and CR1/SPCC/08kp equivalents.
Full data sheet for DC01 → · Equivalent grades → · EN 10130 →
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 |
| 1.0332 | 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| 1.0332 | St 22 | Withdrawn DIN designation for hot-rolled mild steel sheet for cold forming |
| 1.0345 | P235GH | Non-alloy steel for pressure purposes with elevated-temperature properties |
| 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.