BMC (Bulk Molding Compound) and SMC (Sheet Molding Compound) composites are used for a wide range of automotive and truck parts.
From headlamps to under-the-hood electrical and heat-shielding components to exterior body parts and interior structural and cosmetic components.
Some specific applications where automotive composites like BMC and SMC are currently being used include :
- air deflectors and spoilers
- frames for windows / sunroofs
- front-end grill opening panels
- battery casings and covers
- headlamp housings
- bumpers and bumper beam
- heat shields (engine, transmission)
- cylinder head (e.g. valve, rocker, cam) covers
- pillars and coverings
Thermoset composites for the automotive industry offer a high thermal stability, a low coefficient of thermal expansion (comparable to steel), excellent dimensional stability, high impact strength, relatively low weight, receptiveness to paint, and other composite properties.
Many of these parts are used where a Class A surface finish is required, as composite materials can endure the required paint and bake cycles of the automotive industry.