Stainless Grade
303
Free-machining austenitic — sulfur added for the best machinability of the stainless family. For high-volume machined parts.
Last verified: 2026-07-09
| TypeMetallurgical family — determines magnetism and how it's strengthened. | Austenitic |
|---|---|
| ConditionThe condition these typical values apply to. | Annealed |
| Density(g/cm³) | 8 |
| Tensile(MPa)Typical ultimate tensile strength. | 620 |
| Yield(MPa)Typical 0.2% offset yield strength. | 240 |
| Elong.(%)Typical elongation at break. | 50 |
| HardnessTypical hardness (annealed unless noted). | ≤228 HB |
| Machinability | Excellent |
| Magnetic | No* |
- Typical uses: machined fittings, shafts, fasteners, nuts — anything turned in volume.
- The added sulfur trades a little corrosion resistance and weldability for machinability.
Other stainless steel grades
Sources
- AISI / ASM International — typical properties of stainless steels
- Manufacturer datasheets (annealed condition; 17-4 PH in H900)