Being a solid material, polyamide powder has the attractive feature of being self-supporting for the generated product sections. This makes support structure redundant. Polyamide allows the production of fully functional prototypes or end-use parts with high mechanical and thermal resistance. Polyamide parts have excellent long-term stability and are resistant against most chemicals. They can be made watertight by impregnation. The PA material used by Materialise is certified as biocompatible and food-safe under certain conditions.

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Technical Specifications

Standard lead time Minimum of 4 working days, depending on part size, number of components and finishing degrees (offline orders)
5 working days (online orders)
2 working days (Fast lane orders)
Standard accuracy ± 0.3% (with lower limit on ± 0.3 mm)
Minimum wall thickness 1 mm, but living hinges are possible at 0.3 mm
Layer thickness 0.12 mm
Maximum part dimensions 650 x 330 x 560 mm (online & offline orders)
200 x 100 x 100 mm (Fast lane orders)
Surface structure Unfinished parts typically have a grainy surface but all kinds of fine finishes are possible.
Laser-sintered parts can be sandblasted, colored/impregnated, painted, covered and coated.

Datasheet

  Units Condition PA 12 (SLS)
Density g/cm³     0.95 +/- 0.03
Tensile Strength MPa  DIN EN ISO527 48 +/- 3
Tensile Modulus MPa  DIN EN ISO527 1650 +/- 150
Flexural Strength MPa  D790   41 
Elongation at Break  DIN EN ISO527 20 +/- 5
Flexural Modulus N/mm² DIN EN ISO178 1500 +/- 130
Charpy – Impact strength kJ/m2 DIN EN ISO179 53 +/- 3.8
Charpy – Notched Impact Strength MPa DIN EN ISO179 4.8 +/- 0.3
Izod – Impact Strength kJ/m² DIN EN ISO180 32.8 +/- 3.4
Izod - Notched Impact Strength kJ/m² DIN EN ISO180 4.4 +/- 0.4
Ball Indentation Hardness   DIN EN ISO2039 77.6 +/- 2
Shore D/A-hardness   DIN 53505 D 75 +/- 2
Heat Deflection Temp °C ASTM D648 (1.82MPa) 86

Actual values may vary with build condition

Design Guidelines

We’ve put together our trusted tips, tricks and best practices to get you off to a solid start. If you’ve been wondering whether this material allows for interlocking parts or embossing, or if you just want to avoid common design mistakes, check out this handy design guide.

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How Does Laser Sintering Work?

Laser Sintering is a laser-based technology that uses solid powder materials, typically plastics. A computer-controlled laser beam selectively binds together particles in the powder bed, by raising the powder temperature above the glass transition point after which adjacent particles flow together. As the powder is self-supporting, no support structures are necessary.

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