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Steel with the addition of sulfur only, in higher quantities than in 11SMn30; increased machinability at the expense of a slightly more accentuated fragility
| EUROPE | ITALY | GERMANY | FRANCE | UK | USA | ||
|---|---|---|---|---|---|---|---|
| EN 10087: 1998 EN 10277-3: 2008 |
(UNI 4838-80) |
(DIN 1651-88) |
(NF A 35-561-92) |
(BS 970 pt.3-91) | ASTM A 29 | ||
| Grade | N° | Werkstoff | N° | ||||
| 11SMn37 | 1.0736 | CF9SMn36 | 9SMn36 | 1.0736 | S300 | - | - |
| C / max | Si / max | Mn | P / max | S |
|---|---|---|---|---|
| 0,14 | 0,05 | 1,00÷1,50 | 0,11 | 0,34÷0,40 |
| Size (mm) | as Rolled and/or as Rolled + Turned (+SH) | Cold Drawn (+C) | |||
|---|---|---|---|---|---|
| Hardness HB max | Rm (MPa) | Rp0,2 (MPa) min | Rm (MPa) | A5 (%) min | |
| 5≤d≤10 | - | - | 440 | 510÷810 | 6 |
| 10<d≤16 | - | - | 410 | 490÷760 | 7 |
| 16<d≤40 | 169 | 380÷570 | 375 | 460÷710 | 8 |
| 40<d≤63 | 169 | 370÷570 | 305 | 400÷650 | 9 |
| 63<d≤100 | 154 | 360÷520 | 245 | 360÷630 | 9 |
For size <5 mm the mechanical properties may be agreed at the time of enquiry and order
| Operation | °C |
|---|---|
| Hot forgings deformation | 950÷1250 |
| Normalizing | 870÷910 |
| Soft annealing | 650÷700 |
