1.4301
- Tensile Strength
- 600 MPa
- Thermal Conductivity
- 16 W/(m·K)
- Elongation
- 45 %
- Chemical Composition
- C: 0.07%, Cr: 18%, Ni: 10%, Mn: 2%, Si: 1%, P: 0.045%, S: 0.015%, N: 0.1%
Other Names
- X5CrNi18-10
- 17240
- AISI SUS304
- UNS S30400
- 304S31
- Z7CN18-09
- SS 2333
Material Description
EN 1.4301 / AISI 304 is an austenitic stainless steel and is normally non-magnetic in the solution-annealed condition. Slight magnetism can indicate cold working and strain-induced martensite; such material is usually harder and may be more difficult to machine. Use sharp, heat-resistant tools and avoid rubbing, as 304 work-hardens easily and has low thermal conductivity. In indexable milling, dry machining or compressed air for chip evacuation is often preferred, as liquid coolant can increase thermal cycling and cause thermal cracks in the cutting edge. If coolant is required, use a suitable wet-milling grade and apply it consistently. Thread forming is well suited to this ductile material and is recommended where permitted, but the split thread crest can be difficult to clean and may make the process unsuitable for some medical or food-industry applications.