Material number 1.4301: 1.4301
1.4301 is the European material number (Werkstoffnummer, EN 10027-2) for 1.4301, austenitic Cr-Ni stainless steel specified in EN 10088-2.
Reading 1.4301 digit by digit
An EN 10027-2 number has the form 1.XXYY. The leading 1 marks it as steel. The pair 43 is the steel group, and for this number that group is stainless steels with ≥ 2.5 % Ni, no Mo. The final pair 01 is a sequential count inside that group and carries no meaning of its own — 1.4301 is simply the 1th entry registered there.
The group digits are the useful part. Reading 43 tells you what kind of steel you are looking at before you know anything else about it, and the 2 other numbers from group 43 held here are listed below.
1.4301 identity card
| Item | Value |
|---|---|
| Material number (EN 10027-2) | 1.4301 |
| Symbolic grade name | 1.4301 |
| Steel group | 43 — stainless steels with ≥ 2.5 % Ni, no Mo |
| Sequential number in group | 01 |
| Specified in | EN 10088-2 |
| Steel family | Stainless steel |
| Yield, first condition in the table | ≥ 230 MPa (Cold-rolled strip/sheet (C), ≤ 8 mm, +AT) |
| Tensile, same condition | 540–750 MPa |
| Cross-references held | 8 grades in 6 systems |
1.4301 (X5CrNi18-10, V2A) is the EN 10088 austenitic stainless with 18 % Cr, 8–10.5 % Ni: 210 MPa yield, 520–720 MPa tensile, non-magnetic. Composition, properties and the 304 / SUS304 equivalence explained.
Full data sheet for 1.4301 → · Equivalent grades → · EN 10088-2 →
Group 43 — the neighbouring numbers
Same group digits, so the same broad class of steel. The sequential digits do not rank them.