Grades
303
Austenitic, free-machining · EN 1.4305
High sulphur breaks the chip, so it machines far faster. The grade for automatic lathes and volume turned parts.
Sulphur lowers corrosion resistance and hurts weldability. Not for welded or corrosive work.
Chemical composition
| Element | % |
|---|---|
| C | max 0,10 |
| Si | max 1,00 |
| Mn | max 2,00 |
| P | max 0,045 |
| S | 0,15 – 0,35 |
| Cr | 17,0 – 19,0 |
| Ni | 8,0 – 10,0 |
| Mo | — |
| Cu | max 1,00 |
Mechanical properties
| Property | Value |
|---|---|
| Rp0,2 (MPa) | min 190 |
| Rm (MPa) | 500 – 750 |
| A (%) | min 35 |
| HB | max 230 |
| Density (g/cm³) | 7,9 |
| Magnetic | No |
Values are published EN 10088 ranges. The real figure for an order is on that heat certificate.