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OkeyBasic martensitic steel with a low carbon content, a characteristic that on one hand limits temperability and mechanical characteristics after tempering, and on the other increases versatility. Suitable for all those fields in which very high mechanical characteristics are not required. Corrosion resistance sufficient for non-demanding applications.
| EUROPE | ITALY | GERMANY | FRANCE | UK | USA | ||
|---|---|---|---|---|---|---|---|
|
EN 10088-3: 2005 |
(UNI 6900: 71) |
|
|
(BS 970 pt. 3 -91) |
AISI | ||
| Kalite | N° | Werkstoff | N° | (NF A 35-574-90) | |||
| X12Cr13 | 1.4006 | X12Cr13 | X12Cr13 | 1.4006 | Z10C13 | 410S21 | 410 |
| C | Si / max | Mn / max | P / max | S /max | Cr | Ni / max |
|---|---|---|---|---|---|---|
| 0,08÷0,15 | 1,00 | 1,50 | 0,040 | 0,030 | 11,5÷13,5 | 0,75 |
| Size (mm) | Heat treatment | Hardness HB max* | Rp 0,2 (MPa) min | Rm (MPa) | A5 (%) min | KV (J) min |
|---|---|---|---|---|---|---|
| d≤100 | Annealed (+A) | 220 | - | 730 max | - | - |
| Quenched + Tempered (+QT 650) | - | 450 | 650÷850 | 15 | 25 |
*only for guidance
| Size(mm) | Annealed | Quenched + Tempered | |||||
|---|---|---|---|---|---|---|---|
| Rm (MPa) max | HB max* | Heat treatment | Rp 0,2 (MPa) min | Rm (MPa) max | A5 (%) min** | KV (J) min | |
| d≤10 | 880 | 280 | Quenched + Tempered (+QT 650) |
550 | 700÷1000 | 9 | - |
| 10<d≤16 | 880 | 280 | 500 | 700÷1000 | 9 | - | |
| 16<d≤40 | 800 | 250 | 450 | 650÷930 | 10 | 25 | |
| 40<d≤63 | 760 | 230 | 450 | 650÷880 | 10 | 25 | |
| 63<d≤100 | 730 | 220 | 450 | 650÷850 | 15 | 25 | |
*for reference only
**values valid only for size ≥5 mm
| Tensile strength levels | Rm (MPa) |
|---|---|
| +C 500 | 500÷700 |
| +C 650 | 650÷850 |
| +C 800 | 800÷1000 |
| +C 900 | 900÷1100 |
Note: the desired tensile strength level shall be evaluated depending on diameter required
| Size | A (%) max | Rm (MPa) max |
|---|---|---|
| 0,50≤d≤1,00 | 10 | 1100 |
| 1,00≤d≤3,00 | 10 | 1050 |
| 3,00≤ d≤ 5,00 | 10 | 1000 |
| 5,00≤ d≤ 16,00 | 15 | 950 |
Note: If skin passed, Rm might be increased by up to 50 MPa
| Operation | °C |
|---|---|
| Hot forgings deformation | 900÷1100 |
| Annealing (air) | 745÷825 |
| Quenching in air or oil | 950÷1000 |
| Tempering (QT 650) | 680÷780 |