Stainless Steel Alloys for 3D Printing
Stainless steel’s material characteristics make it ideal for a wide range of applications in medical, oil and gas, ship building, etc.
The stainless steel family of powders encompasses the 316L, 316L VPro, 254, Super Duplex, 17-4PH, PH1 (15-5) and CX alloys. All these powders are designed and tested for use on EOS’ metal systems.
EOS stainless steel powders are shipped with an inspection certificate (according to EN 10204, Type 3.1) showing the results of the extensive QA testing not only of the powder itself, but also of test parts built on a dedicated system with a dedicated process. Only EOS StainlessSteel 316L VPro is shipped with a material test report (according to EN 10204, Type 2.2) showing the results of the QA testing with regard to the chemical properties and particle size distribution.
EOS also offers a wide range of validated processes for each of the above materials. These offer the optimal combination of parameters (e.g. laser power, layer thickness, etc.) in order to ensure that the properties of the 3D printed part are consistently achieved.
EOS StainlessSteel 316L
Parts show a high level of corrosion resistance, toughness and ductility as well as a high resistance to acids. This combination is ideal for the a wide range of applications in aerospace, automotive, energy, jewelry, medical, ship building and many more.
Typical Part Properties
| Chemical composition in compliance with | 1.4441, UNS S31673, F138 |
| Ultimate Tensile Strength | 590 MPa |
| Yield Strength | 500 MPa |
| Elongation @ Break | 47 % |
EOS StainlessSteel 316L VPro
The specially developed powder in combination with the HiPro process enable high volume production which potentially can replace press and sinter production in automotive.
Typical Part Properties
| Chemical composition in compliance with | 1.4404, UNS S31603 |
| Ultimate Tensile Strength | 530 MPa |
| Yield Strength | 410 MPa |
| Elongation @ Break | 13.5 % |
EOS StainlessSteel 17-4PH
Parts show a high level of corrosion resistance combined with high strength. This combination is ideal for the medical applications such as surgical instruments.
Typical Part Properties
| Chemical composition in compliance with | 1.4542, UNS17400, A564M |
| Ultimate Tensile Strength | 1340 MPa |
| Yield Strength | 1235 MPa |
| Elongation @ Break | 13,5 % |
EOS StainlessSteel 254
EOS StainlessSteel 254 is an austenitic stainless steel with excellent corrosion resistance and therefore ideal for demanding conditions and difficult environments. This makes it ideal for applications in chlorinated seawater handling equipment, pulp and paper manufacturing devices as well as chemical handling equipment.
Typical Part Properties
| Chemical composition | EN 1.4547 |
| Ultimate Tensile Strength | 700 MPa |
| Yield Strength | 600 MPa |
| Elongation @ Break | 30 % |
EOS StainlessSteel SuperDuplex
This material is an austenitic-ferritic duplex stainless steel optimized for additive manufacturing while maintaining super duplex properties. Its high chromium, molybdenum and nitrogen alloying give excellent corrosion resistance in many difficult environments.
Typical Part Properties
| Ultimate Tensile Strength | 860 MPa |
| Yield Strength | 560 MPa |
| Elongation @ Break | 34 % |
EOS StainlessSteel CX
Parts show good corrosion resistance combined with high strength and hardness plus excellent wear and fatigue resistance. This combination is ideal for demanding applications for plastic injection and rubber molding tools used in medical, food and other industries.
Typical Part Properties
| Ultimate Tensile Strength | 1720 MPa |
| Yield Strength | 1650 MPa |
| Elongation @ Break | 6 % |
EOS StainlessSteel PH1
Parts show a good corrosion resistance and excellent mechanical properties, especially in the precipitation hardened state. This combination is used in a wide range of applications.
Typical Part Properties
| Chemical composition in compliance with | 1.4540, UNS S15500 |
| Ultimate Tensile Strength | 1440MPa |
| Yield Strength | 1300 MPa |
| Elongation @ Break | 13 % |
EOS StainlessSteel GP1
Powder are characterized by good corrosion resistance and mechanical properties – especially ductility. This combination is used in a wide range of applications.
Typical Part Properties
| Chemical composition in compliance with | 17-4, 1.4542 |
| Ultimate Tensile Strength | > 980 MPa |
| Yield Strength | > 550 MPa |
| Elongation @ Break | > 29 % |
