24 July 2021 Free-Cutting Steel Bar
10SPb20 Free-Cutting Steel Bar
10SPb20 is asilicon as well as lead alloyed free-cutting steel. The additional silicon improves the hardenability, the additional lead improves the machinability.
Chemical Component:
| Element | Weight % |
|---|---|
| Mn | 0.7 — 1.1 |
| Si | 0.0 — 0.4 |
| Pb | 0.2 — 0.35 |
| S | 0.15 — 0.25 |
| C | 0.07 — 0.13 |
| P | 0.0 — 0.06 |
Mechanical properties of steel 10SPb20 (1.0722)
| Nominal thickness (mm): | 5 - 10 | 10 - 16 | 16 - 40 | 40 - 63 | 63 - 100 |
| Rm - Tensile strength (MPa) (+C) | 520-780 | 490-740 | 460-720 | 410-660 | 380-630 |
| Nominal thickness(mm): | 5 - 10 | 10 - 16 | 16 - 40 | 40 - 63 | 63 - 100 |
| Rp0.2 0.2% proof strength (MPa) (+C) | 410 | 390 | 360 | 295 | 235 |
| Nominal thickness (mm): | 5 - 10 | 10 - 16 | 16 - 40 | 40 - 63 | 63 - 100 |
| A - Min. elongation at fracture (%) (+C) | 7 | 8 | 9 | 10 | 11 |
| Brinell hardness (HBW): (+SH) | 105 - 156 |
| Brinell hardness (HB): | 107 - 156 |