Material number 1.8965: S355J2W
1.8965 is the European material number (Werkstoffnummer, EN 10027-2) for S355J2W, weathering (atmospheric-corrosion-resistant) structural steel, −20 °C impact specified in EN 10025-5.
Reading 1.8965 digit by digit
An EN 10027-2 number has the form 1.XXYY. The leading 1 marks it as steel. The pair 89 is the steel group, and for this number that group is steels for special applications. The final pair 65 is a sequential count inside that group and carries no meaning of its own — 1.8965 is simply the 65th entry registered there.
The group digits are the useful part. Reading 89 tells you what kind of steel you are looking at before you know anything else about it, and the 1 other number from group 89 held here are listed below.
1.8965 identity card
| Item | Value |
|---|---|
| Material number (EN 10027-2) | 1.8965 |
| Symbolic grade name | S355J2W |
| Steel group | 89 — steels for special applications |
| Sequential number in group | 65 |
| Specified in | EN 10025-5 |
| Steel family | Structural steel |
| Yield, first condition in the table | 355 MPa (≤ 16 mm) |
| Tensile, same condition | 470–630 MPa |
| Cross-references held | 8 grades in 5 systems |
S355J2W (1.8965) is the European Corten B: Cu-Cr-Ni weathering steel, 355 MPa yield, 470–630 MPa tensile, 27 J at −20 °C, self-protecting rust patina. Chemistry, thickness table, A588 / A242 / SMA490 equivalents, welding and façade use.
Full data sheet for S355J2W → · Equivalent grades → · EN 10025-5 →
Group 89 — the neighbouring numbers
Same group digits, so the same broad class of steel. The sequential digits do not rank them.