Material number 1.7225: 42CrMo4
1.7225 is the European material number (Werkstoffnummer, EN 10027-2) for 42CrMo4, chromium-molybdenum steel for quenching and tempering specified in EN 10083-3.
Reading 1.7225 digit by digit
An EN 10027-2 number has the form 1.XXYY. The leading 1 marks it as steel. The pair 72 is the steel group, and for this number that group is Cr-Mo steels < 1 % Cr. The final pair 25 is a sequential count inside that group and carries no meaning of its own — 1.7225 is simply the 25th entry registered there.
The group digits are the useful part. Reading 72 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 72 held here so far.
1.7225 identity card
| Item | Value |
|---|---|
| Material number (EN 10027-2) | 1.7225 |
| Symbolic grade name | 42CrMo4 |
| Steel group | 72 — Cr-Mo steels < 1 % Cr |
| Sequential number in group | 25 |
| Specified in | EN 10083-3 |
| Steel family | Quenched & tempered steel |
| Yield, first condition in the table | 900 MPa (+QT, ≤ 16 mm) |
| Tensile, same condition | 1100–1300 MPa |
| Cross-references held | 9 grades in 6 systems |
42CrMo4 (1.7225) is the Cr-Mo quenched-and-tempered steel of EN 10083-3: 900 MPa yield, 1100–1300 MPa tensile up to 16 mm. Composition, heat treatment, hardness, 4140/SCM440/42CrMo equivalents.
Full data sheet for 42CrMo4 → · Equivalent grades → · EN 10083-3 →