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Stainless Steel420 (SLM)

Stainless Steel 420 is a type of stainless steel manufactured using 3D printing technology. It is a martensitic steel that is commonly used in the production of industrial parts, medical implants, and aerospace components. The manufacturing process of stainless steel 420 involves melting the material with a laser beam and then rapidly solidifying it to create a dense, fully functional metal part.

This process results in a uniform grain structure and excellent mechanical properties, making it ideal for use in high-stress applications. The qualities of stainless steel 420 include high durability, hardness, and resistance to corrosion. Additionally, it is very machineable and simple to polish to a mirror-like surface. But because of its high carbon content. Ultimately, stainless steel 420 is a versatile material that provides a special blend of strength, hardness, and corrosion resistance, making it the perfect option for a range of applications.



Chemical composition: 12-14% chromium and 0.15-0.40% carbon

Maximum Brinell hardness: 223 - 277

Typical tensile strength: 550-700 MPa

Minimum yield strength:  420 MPa

Typical elongation: 12-20%

Properties of materials


  • High strength and hardness
  • Corrosion resistance
  • Machinability
  • Magnetic properties
  • Temperature resistance
  • Weldability




  • Cutlery and surgical instruments
  • Industrial blades and knives
  • Dental and surgical instruments
  • Pumps, valves, and other components in the oil and gas industry
  • Aerospace components and equipment
  • Bearings and other components in the automotive industry
  • Shafts and other components in the power generation industry
  • Textile machinery components
  • Food processing equipment

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