Choose Carbon LW (PA640GSL) for parts that must not deflect under load. Glass- and carbon-fibre-reinforced SLS material, about 2x stiffer than standard PA12, 56 MPa tensile. Ideal for structural brackets, mounting plates, motorsport frames and jigs that carry themselves without metal substitution.
What sets Carbon LW apart from PA12
Carbon LW is a PA12 matrix with glass and carbon fibre reinforcement. Glass fibre delivers stiffness at relatively low cost, carbon fibre adds strength and thermal stability.
Result: 2x as stiff as PA12 without being unaffordable like fully carbon-fibre variants. For parts that must stay dimensionally stable under mechanical or thermal load (brackets, holders, structural frames, industrial arm components), it is the logical step beyond PA12.
When not to choose Carbon LW
Carbon LW is stiffer but not necessarily tougher. For impact, snap-fits or hinges that need to flex without breaking: PA11 (31% elongation, 54 MPa) or standard PA12.
Absolute maximum tensile? PA802CF, 89 MPa (also carbon-fibre-reinforced but on PA11 base, tougher and stronger, more expensive).
Flexible parts? TPU 1301.
Design guidelines for Carbon LW
Fibre-reinforced materials are lightly anisotropic. Strength is higher in the build direction than across. Design critical load directions along the orientation (our engineers help during the DfAM check).
Wall thickness minimum 1.5-2 mm for load-bearing parts. Long thin brackets: check for resonance frequency. High stiffness makes Carbon LW less damping than PA12. Ask for a sample if you are unsure whether the matt, grainy aesthetic fits your product.