What is Selective Laser Sintering? 

Selective Laser Sintering is a rapid prototyping process which produces a physical, three-dimensional object from a 3D CAD file.  An SLS machine uses a computer controlled laser to sinter (melt) a thermoplastic powder, layer by layer, to create a three dimensional part.

For SLS® parts requiring durability and fine detail.
  • Chemical resistance.
  • Excellent for living hinges.
  • Snap-together parts.
  • Heat Resistant.
Fine Nylon Buckle

Mechanical Properties
Measurement Test Method Value
Tensile Strength @Yield ASTM D638 5,200 MPa (36 psi)
Tensile Modulus ASTM D639 202,000 MPa (14,000 psi)
Tensile Elongation at Break ASTM D640 32%
Flexural Modulus ASTM D790 126,000 Mpa (870 psi)
Impact Strength - Notched Izod ASTM D256 70 J/m (1.3 ft-lb/in)
Impact Strength - Unnotched ASTM D257 1370 J/m (25.7 ft-lb/in)

For SLS® parts requiring improved stiffness.
  • Reinforced with glass beads.
  • Improved heat resistance.
  • Better chemical resistance
Glass Filled Nylon Blower Wheel

Mechanical Properties
Measurement Test Method Value
Tensile Strength @Yield ASTM D638 2,800 MPa (19.3 psi)
Flexural Modulus ASTM D790 413,000 MPa (2,847 psi)
Impact Strength - Notched Izod ASTM D256 53 J/m (1.0 ft-lb/in)
Impact Strength - Unnotched ASTM D257 443 J/m (8.3 ft-lb/in)
Shore D Hardness - @ 25° C ASTM D2240  66 
Why Use Selective Laser Sintering? 

SLS is very similar to the SLA (stereolithography) prototyping process.  It's best to use SLS, when complex shapes that closely resemble injection molded nylon parts are required. 

A wide range of materials can be used to produce prototypes, including nylon and metals. 

Large one-piece parts up to 27.6 inches long can be produced on dual-laser machines, when needed.  Direct metal laser sintering (DMLS) of stainless steel and cobalt chrome is also available. 

View SLS Process Video Below 
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