1.4305
- Tensile Strength
- 600 MPa
- Thermal Conductivity
- 16 W/(m·K)
- Elongation
- 35 %
- Chemical Composition
- C: 0.07%, Cr: 18%, Ni: 9%, Mn: 2%, Si: 0.5%, S: 0.27%, P: 0.025%
Other Names
- X8CrNiS18-9
- AISI SUS303
- Z8CNF18-09
- 303S31
- SS 2346
- UNS S30300
- 17243
Material Description
1.4305 / AISI 303 is an austenitic free-machining stainless steel, normally supplied solution annealed or as cold-finished bar. Its high sulphur content gives significantly better chip breaking than 1.4301 / AISI 304, while similar cutting parameters are generally used. Sharp stainless-steel geometries work very well, and general-purpose tools can also be used successfully. The sulphur addition reduces corrosion resistance, formability and weldability compared with 304, so 303 is mainly preferred where good machinability and reliable chip control are more important than maximum corrosion resistance or welding performance.