Non-alloy steel with very low temperability, temperable only in water and used for simple and small pieces. Often used without the quenching and tempering treatment.
Standard Reference: EN 10083-2: 2006 (Hot-rolled products)
| EUROPE | ITALY | GERMANY | FRANCE | UK | USA | ||
|---|---|---|---|---|---|---|---|
| EN 10083-2: 2006 | (UNI 7845-78) | (DIN 17200-86) | (NFA35-552-86) | (BS970 pt.3-96) | ASTM A 29 | ||
| Grade | N° | Werkstoff | N° | ||||
| C22E | 1.1151 | Ck22 | 1.1151 | XC18 | 070M20 | 1020 | |
| EUROPE | C | Si/max | Mn | P/max | S | Cr/max | Mo/max | Ni/max | Al | Pb |
|---|---|---|---|---|---|---|---|---|---|---|
| C22E | 0,17÷0,24 | 0,40 | 0,40÷0,70 | 0,035 | ≤ 0,035 | 0,40 | 0,10 | 0,40 | - | - |
| C22EPb | 0,020÷0,040 | 0,020÷0,050 | 0,15÷0,30 |
| Size (mm) |
HB max to condition | Normalized (+N) |
|||||
|---|---|---|---|---|---|---|---|
| Treated to improve shearability (+S) | Soft annealing (+A) | Rp0,2 (MPa) min | Rm (MPa) min | A5 (%) min | |||
| d≤16 | it can be sheared without heat treatment | - | 240 | 430 | 24 | ||
| 16<d≤40 | - | 210 | 410 | 25 | |||
| 40<d≤100 | - | 210 | 410 | 25 | |||
| Size (mm) |
as Rolled + as Rolled + Turned (+SH) |
Cold Drawn (+C) |
||||||
|---|---|---|---|---|---|---|---|---|
| Hardness HB |
Rm (MPa) | Rp0,2 (MPa) min |
Rm (MPa) | A5 (%) min |
||||
| 5≤d≤10 | - | - | 425 | 550÷900 | 7 | |||
| 10<d≤16 | - | - | 340 | 500÷800 | 8 | |||
| 16<d≤40 | 136÷200 | 460÷650 | 270 | 470÷770 | 9 | |||
| 40<d≤63 | 136÷200 | 460÷650 | 240 | 450÷750 | 10 | |||
| 63<d≤100 | 136÷200 | 460÷650 | 215 | 425÷700 | 10 | |||
| *For reference only. Note: For size <5 mm the mechanical properties may be agreed at the time of enquiry and order. |
||||||||
| Operation | °C |
|---|---|
| Hot forgings deformation | 850÷1150 |
| Isothermal annealing | 880÷900 |
| Soft annealing | 650÷700 |
| Quenching in water | 870÷890 |
| Tempering | 580÷620 |
