March 28, 2023


Brief Introduction and History

Selective Laser Melting (SLM) Mould Steel 18Ni300 represents a significant advancement in the world of 3D printing materials, specifically tailored for industrial applications. This steel alloy has its roots in the evolution of 3D printing for producing complex metal parts with high precision and strength.

Material Composition

SLM Mould Steel 18Ni300 is primarily composed of iron (Fe), nickel (Ni), and chromium (Cr), with small quantities of other elements like carbon (C) and molybdenum (Mo). These elements are carefully balanced to achieve exceptional mechanical properties, corrosion resistance, and weldability.


  1. Tool and Die Manufacturing: Widely used in the production of molds, dies, and tooling for industries like automotive and aerospace.
  2. Customized Industrial Components: Utilized to create specialized components with complex geometries for various industrial applications.
  3. Aerospace Parts: Used for manufacturing aerospace components, such as engine parts and structural elements.
  4. Medical Devices: Applied in the production of precision medical instruments and implants.

Best Fit Use

SLM Mould Steel 18Ni300 is best suited for applications where high strength, precision, and corrosion resistance are essential. It is predominantly used in industrial settings due to its specialized characteristics.

Detailed Example of Specific Use 1

Tool and Die Manufacturing: This material is employed to produce molds and dies for injection molding and metal forming processes. Its high strength and thermal stability ensure long-lasting tooling.

Detailed Example of Specific Use 2

Aerospace Components: In the aerospace industry, SLM Mould Steel 18Ni300 is used to create critical components like turbine blades and structural parts due to its excellent mechanical properties.

Difference Between Basic and Advanced Forms

The basic form of SLM Mould Steel 18Ni300 offers superior mechanical properties, corrosion resistance, and precision. Advanced forms may involve custom alloys tailored to specific applications or post-processing treatments to enhance properties like surface finish.


  • Exceptional mechanical strength and precision.
  • High corrosion resistance.
  • Suitable for complex geometries.
  • Excellent weldability.
  • Customizable for specific applications.


  • Requires specialized SLM 3D printers and controlled environments.
  • Limited availability compared to more common metals.
  • Higher cost compared to traditional manufacturing methods.

Overall Rating for Daily Use

  • Hobbyists: 1/5 (Due to its specialized nature and equipment requirements, it is rarely used in hobbyist settings).
  • Professionals: 5/5 (Invaluable for industrial applications demanding high precision and strength).

Future Developments

Future developments in SLM Mould Steel 18Ni300 are expected to focus on optimizing printing parameters, reducing production costs, and expanding its range of applications. Research may explore new alloy formulations and post-processing techniques to further enhance its properties.