Material number 1.0037: St37-2
1.0037 is the European material number (Werkstoffnummer, EN 10027-2) for St37-2, general structural steel (DIN 17100, withdrawn) — today S235JR specified in DIN 17100.
Reading 1.0037 digit by digit
An EN 10027-2 number has the form 1.XXYY. The leading 1 marks it as steel. The pair 00 is the steel group, and for this number that group is base steels. The final pair 37 is a sequential count inside that group and carries no meaning of its own — 1.0037 is simply the 37th entry registered there.
The group digits are the useful part. Reading 00 tells you what kind of steel you are looking at before you know anything else about it, and the 5 other numbers from group 00 held here are listed below.
1.0037 identity card
| Item | Value |
|---|---|
| Material number (EN 10027-2) | 1.0037 |
| Symbolic grade name | St37-2 |
| Steel group | 00 — base steels |
| Sequential number in group | 37 |
| Specified in | DIN 17100 |
| Steel family | Structural steel |
| Yield, first condition in the table | 235 MPa (< 16 mm (DIN 17100)) |
| Tensile, same condition | 340–470 MPa |
| Cross-references held | 8 grades in 7 systems |
St37-2 (DIN 17100) is the withdrawn German structural steel now called S235JR: 235 MPa yield, 340–470 MPa tensile. What St37 means, how it maps to S235JR/1.0038, A36, SS400 and Q235, and what changed.
Full data sheet for St37-2 → · Equivalent grades → · DIN 17100 →
Group 00 — the neighbouring numbers
| Material number | Grade | Type |
|---|---|---|
| 1.0026 | S195T | Non-alloy steel for welded and threaded tubes (water, gas, sprinkler, GI pipe) |
| 1.0038 | S235JR | Non-alloy hot-rolled structural steel |
| 1.0039 | S235JRH | Non-alloy structural steel for cold-formed (EN 10219) and hot-finished (EN 10210) hollow sections |
| 1.0044 | S275JR | Non-alloy hot-rolled structural steel |
| 1.0045 | S355JR | Non-alloy hot-rolled structural steel |
Same group digits, so the same broad class of steel. The sequential digits do not rank them.