EN 10277:2018 standard
W.NR.: 1.1241
Non-alloy special steel
heat analysis according to the EN ISO 683-1:2018 standard
| C % | Si % | Mn % | P % | S % | Cr % | Ni % | Mo % | Cu % | Cr+Mo+Ni % | |
| From | 0,47 | 0,10 | 0,60 | – | 0,020 | – | – | – | – | – |
| To | 0,55 | 0,40 | 0,90 | 0,025 | 0,040 | 0,40 | 0,40 | 0,10 | 0,30 | 0,63 |
according to the EN 10277:2018 standard
| Thickness mm |
Rolled + peeled rolled ( +SH ) |
Cold drawn ( +C ) |
|||
| hardness HB | Rm (MPa) | Rp0,2 minimum | Rm (MPa) | A5 % | |
| (MPa) | minimum | ||||
| ≥5≤10 | 590 | da 770 a 1100 | 5 | ||
| >10≤16 | 520 | da 730 a 1080 | 6 | ||
| >16≤40 | da 179 a 269 | da 610 a 910 | 440 | da 690 a 1050 | 7 |
| >40≤63 | da 179 a 269 | da 610 a 910 | 390 | da 650 a 1030 | 8 |
| >63≤100 | da 179 a 269 | da 610 a 910 | – | – | – |
* Delivery condition: as rolled.
Weldability:
Not weldable. It can be welded only with particular precautions. It has a bad machinability.
Hardenability:
It has a low hardenability in water or oil; fit for surface hardening that gives this steel grade a high hardness of the hardened shell.
Notes:
CORRESPONDENCE WITH THE OTHER STANDARDS (purely as an indication):
| UNI 7845 | DIN 17200 | AISI-SAE |
| C50 | Cm50 | 1050 |