EN 10083-3 Standard
W.NR.: 1.7220/34CrMo4
Special Alloy Steel
Analysis according to the EN 10083-3 standard
| C % | Si % | Mn % | P % | S % | Cr % | Mo % | |
| From | 0,30 | – | 0,60 | – | – | 0,90 | 0,15 |
| To | 0,37 | 0,40 | 0,90 | 0,025 | 0,035 | 1,20 | 0,30 |
According to the UNI 10233-5 standard
| Thickness mm | Annealed + Cold Drawn |
| ( +A+C ) | |
| Hardness HB max | |
| ≥5≤10 | 290 |
| >10≤16 | 280 |
| >16≤40 | 275 |
| >40≤100 | 270 |
* Delivery condition: soft annealed.
Weldability:
Low weldability; this steel grade can be welded only with suitable precautions.
Hardenability:
Steel grade with medium carbon content showing a poor hardenability; sensitive to notching and to quenching cracks.
Notes:
CORRESPONDENCE WITH OTHER STANDARDS (purely as an indication) :
| UNI 7845 | DIN 17200 | ISO 683-1 | AFNOR 35-552 | AISI-SAE |
| 35CrMo4 | 34CrMo4 | 34CrMo4 | 34CD4 | 4135 |