Selection framework / 03
Material Selection Guide
A first-pass map from application needs to candidate polymer families and the questions that narrow the choice.
Selection matrix
Choose a starting point, then test the assumptions.
These polymer families are screening directions, not automatic substitutions or finished-grade approvals.
Application needStarting pointConfirmWatch
Impact-resistant housingPC/ABS or impact-modified ABSDrop temperature, wall thickness, heat and surface requirementsChemical contact, residual stress and paint or adhesive compatibility
Flame-retardant electrical enclosureFR PC/ABS, FR PC or FR ABSStandard, rating, tested thickness, color and heat-aging needsDo not compare flame ratings without the certification scope
Electrical connector or coil bobbinReinforced FR PBT or PA66Electrical, thermal, dimensional and soldering requirementsMoisture sensitivity, warpage and glass-fiber orientation
Outdoor enclosure or trimASA, PC/ASA or a UV-stabilized engineering polymerUV exposure, temperature, color retention and impact levelOutdoor durability must reflect the real climate and part design
Gear, bearing or low-friction partPOM, PA or a wear-modified compoundLoad, speed, counterface, lubrication and dimensional toleranceMoisture, creep, noise and long-term temperature
Rigid structural componentGlass-fiber reinforced PA, PBT, PP or PCStiffness, heat, impact, creep and molding geometryFiber orientation, weld-line strength, shrinkage and surface quality
Before we recommend a grade
Six inputs prevent most false matches.
- 01Application and part geometry
- 02Current material or benchmark grade
- 03Critical properties and test methods
- 04Processing method and known defects
- 05Compliance and destination market
- 06Volume, color and commercial target
Source engineering plastics from China
Request a free material sample and a competitive quotation.
RC Polymer Supply Chain helps overseas buyers match modified engineering plastics and polymer additives with a focus on consistent quality, stable supply and China-direct pricing.
- Free material samples for qualified projects
- Competitive China-direct pricing
- Quality and supply coordination for repeat orders