Material: Glass Filled Nylon PA12 (SLS)

PA12 Glass Filled Nylon is a polyamide material reinforced with glass particles to significantly increase stiffness, thermal resistance, and dimensional stability. Compared to standard PA12, it behaves more like a structural plastic than a flexible one.

The key difference is stiffness and behaviour under load. PA12 Glass Filled Nylon has:

1. Much higher tensile modulus (~3720 MPa vs ~1700 MPa for standard PA12)
2. Significantly lower elongation at break (~2.8% vs ~19%)
3. Better dimensional stability and reduced creep

In simple terms: PA12 bends. PA12 Glass Filled Nylon holds its shape.

PA12 Glass Filled Nylon is strong and stiff, but also more brittle than standard PA12 Nylon.

It performs very well under load and at higher temperatures, but will snap rather than flex under excessive force due to its low elongation at break (~2.8%)

PA12 Glass Filled Nylon performs well in elevated temperature environments, with a heat deflection temperature (HDT) of:

1. 180°C under light load (0.45 MPa)
2. 129°C under higher load (1.82 MPa)

This means it maintains its shape at high temperatures, even when under mechanical stress.

Choose PA12 Glass Filled Nylon when:

1. You need stiffness over flexibility
2. The part must stay dimensionally stable
3. The part is exposed to heat
4. Structural performance matters

Choose standard PA12 when:

1. You need impact resistance
2. The part needs to flex or snap
3. You want better toughness overall

1. As printed – off-white/grey, slightly rough texture
2. Shot peened + dyed – smoother, coloured, more resistant to dirt and scratches
3. Vibro polished – improved tactile feel
4. Vapour smoothed – sealed, smooth, more functional surface

PA12 Glass Filled Nylon is used for parts where stiffness, dimensional stability, and heat resistance matter more than flexibility.

In practice, it’s commonly chosen for:

1. Structural housings and enclosures that must hold their shape
2. Jigs and fixtures where repeatability is critical
3. Components exposed to heat, such as near motors or electronics
4. Larger parts where warping needs to be minimised

If your part needs to stay rigid under load or maintain accuracy over time, this is usually the better choice over standard PA12.

PA12 Glass Filled Nylon is often used as a lightweight alternative to aluminium in certain applications, but they serve different roles.

PA12 Glass Filled Nylon advantages:

1. Much lighter weight
2. No tooling required
3. Complex geometries at no extra cost
4. Faster iteration and production

Aluminium advantages:

1. Higher absolute strength
2. Better for very high loads or structural safety-critical parts
3. Superior thermal conductivity

In practice, PA12 Glass Filled Nylon is ideal for lightweight structural parts, housings, and fixtures, where reducing weight and manufacturing complexity matters more than maximum strength.

Short answer: yes.

1. Can be drilled, tapped, and machined
2. Compatible with threaded inserts
3. Can be sanded, painted, or coated

PA12 Glass Filled Nylon behaves differently to standard PA12 due to its stiffness and brittleness, so some design considerations are important:

1. Wall thickness: Thicker walls are recommended to avoid brittleness in thin features
2. Avoid snap fits: The material does not flex well and may crack
3. Fillets over sharp corners: Helps reduce stress concentrations
4. Uniform wall sections: Minimises internal stress and warping
5. Threads and inserts: Better suited to threaded inserts than printed threads for durability

If your design relies on flexibility or repeated impact, standard PA12 is usually a better choice.