Material number 1.4571: 1.4571
1.4571 is the European material number (Werkstoffnummer, EN 10027-2) for 1.4571, austenitic Cr-Ni-Mo stainless steel, titanium-stabilized specified in EN 10088-2.
Reading 1.4571 digit by digit
An EN 10027-2 number has the form 1.XXYY. The leading 1 marks it as steel. The pair 45 is the steel group, and for this number that group is stainless steels with special additions. The final pair 71 is a sequential count inside that group and carries no meaning of its own — 1.4571 is simply the 71th entry registered there.
The group digits are the useful part. Reading 45 tells you what kind of steel you are looking at before you know anything else about it, and this is the only number from group 45 held here so far.
1.4571 identity card
| Item | Value |
|---|---|
| Material number (EN 10027-2) | 1.4571 |
| Symbolic grade name | 1.4571 |
| Steel group | 45 — stainless steels with special additions |
| Sequential number in group | 71 |
| Specified in | EN 10088-2 |
| Steel family | Stainless steel |
| Yield, first condition in the table | ≥ 240 MPa (Cold-rolled sheet (C), ≤ 8 mm, +AT) |
| Tensile, same condition | 540–690 MPa |
| Cross-references held | 8 grades in 6 systems |
1.4571 (X6CrNiMoTi17-12-2, 316Ti) is the Ti-stabilized 316 of EN 10088: 2–2.5 % Mo, Ti ≥ 5×C. 220–240 MPa yield, 520–690 MPa tensile, PREN ≈ 24, creep-resistant to 550 °C. Data and 316Ti/SUS316Ti equivalents.
Full data sheet for 1.4571 → · Equivalent grades → · EN 10088-2 →