Downloadable guide

Plastic Material Selector: Behaviour on the Press, Not on the Datasheet

Datasheets describe a material in a conditioned state that your finished part will never sit in. This selector compares the engineering resins we mold most by how they behave once they are hot, loaded, dried and ejected: how far they shrink, how much they move afterwards, and what they demand from the tool to hold a dimension.

What's inside

• Amorphous versus semi-crystalline: the difference that sets shrinkage and tolerance
• Glass, mineral and flame-retardant loading, and the wear and finish each brings
• Hygroscopic resins: drying as part of material selection rather than a machine setting
• Chemical, UV and heat exposure: where a cheaper resin quietly costs more