Sheet molding compound (SMC) is a compression moulded high-strength composite material utilizing continuous fiber reinforcement, thermosetting resin, and filler(s). Thermosetting resin is typically based on unsaturated polyester, vinyl ester, phenolic, or a modified vinyl urethane to produce a high strength moulding compound.
Sheet Moulding Compound (SMC) is ideal for large structural components due to its high strength-to-weight ratio. SMC offers additional benefits in part design allowing localised rib reinforcement and bosses for fastening attachments and sub-assemblies. Significant tooling investment and overall component cost savings result from part consolidation. With the same coefficient of thermal expansion as Steel and excellent corrosion resistance, SMC is an ideal alternative to Steel and can be used in the same fluctuating temperature environments. The main benefit, however, is a typical 25% weight reduction achieved at a similar strength to steel.