MJF Printing

multi jet fusion
Table of Contents

Prints with mjf Printing

Mult jet fusion (MJF) is a 3d printing process developed by HP. This process is ideal for manufacturing end products, prototypes, design models and complex geometries in high and low numbers. The details are printed by applying an adhesive to a thin layer of plastic powder which is then sintered using a heating element. This results in gray details with isotropic material properties and a grainy surface structure that can be painted, dyed black or polished. Other methods for 3D printing that we work with include: SLS Printing and FDM Printing.

Process dataValue
Standard tolerance± 0.3% (minimum limit ±0.3 mm)
Layer thickness0.08 mm
Minimum wall thickness0.8 mm
Minimal detail0.8 mm
Largest component size370 x 274 x 375 mm

*the above data depends on the choice of material.

*click to enlarge*

Materials for MJF Printing

PA12 (Nylon 12)

PA12 is suitable for most purposes when it comes to functional prototypes, design models and small scale manufacturing. The material is dark grey, which when dyed black gives desirable surface properties in the form of scratch resistance. Compared to white SLS-manufactured PA12 which is dyed black, scratches in MJF-manufactured PA12 become dark gray instead of white.

  • Fine grainy surface finish
  • Dimensionally stable
  • PA12 is gray unless dyed black
  • Works well for most purposes and also mass production of end products
Material dataUnitValue
Tensile strength (x/y/z)MPa48/48/48
E-module (x/y/z)MPa1700/1700/1800
Flexural strengthMPa40
Flexural modulusMPa1600
Charpy impact test (23°C)kJ/m²52 ± 2
Charpy notched impact test (23°C)kJ/m²4.5 ± 0.1
Elongation at break (x/y/z)%20/20/15 (± 2)
Shore D Hardness74 ± 2
Heat resistance temperature (1.82 MPa)°C95


TPU 90A is a thermoplastic elastomer based on polyurethane and is a thermoplastic variant of polyurethane rubber. TPU 90A is among the softest and most rubber-like materials we have. This material is perfect for prototypes of rubber parts or functional components where high demands are placed on abrasion resistance, wear resistance and elasticity.

  • Allows for high complexity
  • Rubbery and durable
  • Functional prototypes and final products
Material dataUnitValue
Tensile strengthMPa8
Flexural modulusMPa75
Izod impact strength (notched 23°C)kJ/m²no crime
Izod impact strength (notched -10°C)kJ/m²45
Elongation at break%200
Fatigue 100k cycles -10°C (ASTM D1052 methode A) No cracking
Shore A Hardness88
Melting temperature°C120-150

Values above are approximate and actual values may vary.