Questions about Thermoset Composites?


Structural Thermoset Composites
Structural thermosets are high-performance composites that are distinguished from standard compounds by the use of more specialized resins both liquid and solid (vinylester, epoxy, benzoxazine, etc.) combined with higher levels of reinforcement (glass, carbon, natural, etc.).


Sheet Molding Compounds
SMC is a combination of long chopped glass strands, mineral fillers and liquid thermosetting resin in the form of a malleable sheet material. Processing of SMC of is typically done by compression or injection molding.


Bulk Molding Compounds
BMC is a combination of short chopped glass strands, mineral fillers and liquid thermosetting resin in the form of a bulk material. BMC is suitable for either compression or injection molding.

Structural Thermoset Composites

Custom Formulated Structural Thermoset Composites

Material Performance

Material Description

SMC Series

BMC Series

High Strength

The STC® 1000 line takes BMC to the next level of strength by formulating the product with high levels of reinforcement.

STC® 1000

High Strength &
Corrosion Resistant

The STC® 1100 line represents a highly corrosive resistant composite with high strength.

STC® 1100

High Strength &
Corrosion Resistant

The STC® 1200 line represents a custom blend of the STC-1000 and STC-1100 series to yield a unique value proposition.

STC® 1200

High Strength

The STC® 2000 line represents a traditional thermosetting composite with the added advantage of high glass concentration allowing high strength at a great value.

STC® 2000

High Strength & High Corrosion Resistant

The STC® 2100 line represents a highly corrosion resistant thermosetting composite armed with high strength performance.

STC® 2100

High Strength & High Corrosion Resistant

The STC® 2200 line is a custom blend of both the STC-2000 and STC-2100 chemistries allowing the composite to be customized for performance and value.

STC® 2200

High Strength & Impact Resistant

The STC® 2300 line represents a thermoset technology that utilizes hybrid technology to yield amazing toughness and improved impact performance.

STC® 2300

High Strength,
Corrosion Resistant & Impact Resistant

The STC® 2400 line yields corrosion resistant properties in addition to high strength, toughness, and improved impact strength.

STC® 2400

High Strength & Low Density Carbon Fiber

The STC® 3100 line excels when low density and high mechanical values are desired. The coupling of a highly corrosive composite with the newest carbon fiber options yields versatility and high modulus (stiffness) in a value added package.

STC® 3100

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Structural Thermoset Composites Are ideal For:

Military & Aerospace





Oil & Gas

Alternative Energy


Structural Thermoset Composites Address High Performance Applications

High Strength Thermoset CompositesStructural thermosets are high performance composites that are distinguished from standard SMC and BMC by the use of more specialized resins combined with higher levels of reinforcement (glass, carbon, aramid, etc.). The resulting fiber reinforced composite material satisfies unique performance requirements. Structural thermosets improve the design, manufacture, and durability of a broad range of products, causing many design engineers and molders to convert their product designs to Structural Thermoset SMC and Structural Thermoset BMC. Consisting of fiber-reinforced polymers with cross-linked molecules, these products offer a number of advantages over metals and thermoplastics, including higher strength per unit weight, better dimensional stability and corrosion resistance, greater design flexibility, and lower overall costs.

comparison of Structural Thermoset Composites to competing materials

Markets such as Military & Aerospace, Transportation, Safety, Medical, Electrical, Oil & Gas, Alternative Energy, and Marine rely increasingly on Structural Thermoset SMC and BMC technology to address growing demands for high-reliability metal replacement materials. Due to the intrinsic limitations of metals and thermoplastics, many designers turn to structural thermosets to provide greater strength, lower coefficients of thermal expansion, and better corrosion resistance than other commonly used materials, while increasing design flexibility and manufacturing efficiency. The strong molecular bonds inherent in high-performance thermoset compounds impart a tight web of inner connectivity that provides these materials with the ability to maintain excellent structural properties during prolonged exposure to extreme chemical and temperature profiles.