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Okey
Non-alloy carburized steel with slightly more carbon than the previous one. Temperable in water.
| EUROPE | ITALY | GERMANY | FRANCE | UK | USA | ||
|---|---|---|---|---|---|---|---|
| EN 10084: 2008 EN 10277-4: 2008 |
(UNI 7846-78) | (DIN 17210-84) | (NFA35-551-86) | (BS970 pt.3--91) | ASTM A 29 | ||
| Grade | N° | Werkstoff | N° | ||||
| C15E | 1.1141 | C15 | Ck15 | 1.1141 | XC12 | (080M15) | 1015 |
| EUROPE | C | Si | Mn | P/max | S | Cr/max | Mo/max | Ni/max | Cu/max | Al | Pb |
|---|---|---|---|---|---|---|---|---|---|---|---|
| C15E | 0,12÷0,18 | 0,15÷0,40 | 0,30÷0,60 | 0,025 | ≤0,035 | 0,40 | 0,10 | 0,40 | 0,30 | 0,020÷0,050 | - |
| C15RPb | 0,020÷0,040 | 0,15÷0,30 |
| Size (mm) |
Annealed to maximum hardness requirement (+A) | Normalized (+N) | ||||
|---|---|---|---|---|---|---|
| d≤100 | ≤143 | 95÷150 | ||||
| Size (mm) |
as Rolled + Turned (+SH) | Cold drawn (+C) | +A**+ Turned (+A+SH) | +A**+ Cold drawn (+A+C) | |||
|---|---|---|---|---|---|---|---|
| Hardness (HB)* | Rm (MPa) | Rp0,2 (MPa) min | Rm (MPa) | A5 (%) min | Hardness (HB) max | Hardness (HB) max | |
| 5≤d≤10 | - | - | 380 | 500÷800 | 7 | - | 238 |
| 10<d≤16 | - | - | 340 | 480÷780 | 8 | - | 231 |
| 16<d≤40 | 98÷178 | 330÷600 | 280 | 430÷730 | 9 | 143 | 216 |
| 40<d≤63 | 98÷178 | 330÷600 | 240 | 380÷670 | 11 | 143 | 198 |
| 63<d≤100 | 98÷178 | 330÷600 | 215 | 340÷600 | 12 | 143 | 178 |
* Hardness values valid also in as rolled condition
**+A = annealed to maximum hardness requirement
For size <5 mm the mechanical properties may be agreed at the time of enquiry and order
| Operation | °C |
|---|---|
| Hot forgings deformation | 900÷1150 |
| Carburizing temperature | 880÷930 |
| Core quenching temperature | 880÷930 |
| Case quenching temperature | 780÷820 |
| Tempering | 150÷200 |
