StainlessSteel AISI316L is a corrosion resistant iron based alloy. The parts built from StainlessSteel 316L have chemical composition corresponding to ASTM F138 "Standard Specification for Wrought 18Cr-14Ni-2.5Mo Stainless Steel Bar and Wire for Surgical Implants (UNS S31673)". This kind of stainless steel is characterized having a good corrosion resistance and evidence that there are no leachable substances in cytotoxic concentrations. This material is ideal in: - Lifestyle/Consumer (watches, other jewellery, spectacle frames, decorations, functional elements in electronic housing and accessories) - Automotive/Industrial (non-corroding common material, food and chemical plants) - Aerospace/Turbine industry (entry-level material for Laser Sintering Technology, mounting parts, brackets, heat exchangers). Parts built from StainlessSteel 316L can be machined, shot-peened and polished in as-built or stress relieved (AMS2759) states if required. Solution annealing is not necessary because the mechanical properties of as-built state are showing desired values (ASTM A403). Parts are not ideal in temperature range 427°C-816°C where precipitation of chromium carbides occurs.
| Mechanical Properties | Test Method | As Built | Heat Treated |
| Tensile strength | ISO 6892-1:2009(B) Annex D | 587 ± 26 MPa | 529 ± 8 MPa |
| Yield Strength (Rp 0.2%) | ISO 6892-1:2009(B) Annex D | 464 ± 26 MPa | 330 ± 8 MPa |
| Elongation at Break | ISO 6892-1:2009(B) Annex D | Approx. 40 ± 5% | Approx. 63 ± 5% |
| Young’s Modulus | - | 167 ± 26 GPa | 200 GPa |
| Hardness | DIN EN ISO 6508-1 | 20 HRC | 20 HRC |
| Thermal Properties | Test Method | As Built | Heat Treated |
| Thermal conductivity | ASTM E1461-13 | 15 ± 2 W/m°C | 15 ± 2 W/m°C |
| Chemical Composition and Physical Properties | ||
| Chemical composition |
Fe Cr Ni Mo C Mn Cu P S Si N |
Balance 17 - 19% 13 - 15% 2,25 - 3% ≤ 0,03% ≤ 2% ≤ 0,5% ≤ 0,025% ≤ 0,01% ≤ 0,75% ≤ 0,1% |
| Physical Properties | Relative density | Approx. 99,99 % |
| Density | 7,90 g/cm3 |
| Heat Treatment | Temperature | Time | Atmosphere |
| Stress Relief | RT - 550°C | 3h | Inert |
| 550°C | 6h | Inert | |
| 550°C - RT | - | Inert |