Materials

The right material for what your part has to withstand.

For each material: its heat figures without and under load, how stiff and impact resistant it is, and what it resists. Unsure? Let the material selector help.

Heat, stiffness, impact resistance, chemicals and UV match the material selector's table and are indicative. The two heat figures are the heat deflection temperature from the manufacturer data sheet minus a 10 C margin, rounded down to 5 C: without load for a part that only has to keep its own shape, under load once something presses, pulls or hangs on it. Where a card says after annealing, the manufacturer recommends annealing and the figure is for an annealed part (for the nylons, dry); nylon and PPA lose stiffness and heat resistance as they absorb moisture. For PPA-GF, PPA-CF, PET-CF and PET-GF the manufacturer calls annealing optional: the figure shown is as printed, with the value after annealing on request next to it. Unfilled PPA shows its wet value. For TPU the manufacturer gives no heat deflection temperature. Green is affordable, red is expensive. Black or grey by default depending on the material, other colours on request.

More background per material: PPS-CF and heat, PPA, fibre reinforced nylon, the PET family, PCTG, the ASA family, polycarbonate, TPU and ESD materials. Looking for a part that is no longer sold? Read how we remake a spare part.

Oil, solvents and chemicals

PA6-GF

Glass fibre

Stiff, with the highest heat deflection temperature of the nylons when dry and annealed. Loses stiffness when damp. For warm, loaded parts that stay dry.

Heat without load
about 180 C
Heat under load
about 145 C

Both figures after annealing.

Stiffness
Impact
Chemical
UV
Price band

PA612-CF

Carbon fibre

Stiff, with a high heat deflection temperature when dry and annealed, and lower moisture uptake than PA6-GF.

Heat without load
about 165 C
Heat under load
about 100 C

Both figures after annealing.

Stiffness
Impact
Chemical
UV
Price band

PPA

A nylon for oil and solvents. Unfilled PPA has a low heat limit, so keep it cool.

Heat without load
about 50 C
Heat under load
about 35 C

Both figures are damp (wet) values: PPA takes up moisture.

Stiffness
Impact
Chemical
UV
Price band

PPA-GF

Glass fibre

For oil and solvents. The heat limit as printed is modest; annealing on request raises it a long way. No conductive fibre (glass instead of carbon). The middle option among the PPAs.

Heat without load
about 70 C
Heat under load
about 70 C

As printed. Annealing on request: about 175 C without load / 100 C under load.

Stiffness
Impact
Chemical
UV
Price band

PPA-CF

Carbon fibre

For oil and solvents, and very stiff. The heat limit as printed is modest; annealing on request raises it.

Heat without load
about 70 C
Heat under load
about 70 C

As printed. Annealing on request: about 180 C without load / 105 C under load.

Stiffness
Impact
Chemical
UV
Price band

PPS-CF

Carbon fibre

Very resistant to many chemicals; check your medium with us. Stiff, and very heat resistant once annealed.

Heat without load
about 240 C
Heat under load
about 120 C

Both figures after annealing.

Stiffness
Impact
Chemical
UV
Price band

PPS-GF

Glass fibre

Same base polymer as PPS-CF and so also very resistant to many chemicals; slightly tougher and electrically insulating.

Heat without load
about 225 C
Heat under load
about 115 C

Both figures after annealing.

Stiffness
Impact
Chemical
UV
Price band

Not sure which material?

Answer a few questions about your part and the selector suggests the right material.