STM Mold

Structural Thermoset Molding.
Replacing Metal with High-Strength Composites.

STM

Engineered for Strength

STM (Structural Thermoset Molding) is a specialized composite manufacturing process designed to produce parts with exceptional mechanical properties and load-bearing capabilities. By combining high-performance thermoset resins with strategically oriented fibers (glass or carbon), STM creates components that rival the strength of steel and aluminum at a fraction of the weight.

At SUASE MOULD, we engineer tools specifically for CF-SMC to enable the rapid production of complex, 3D-shaped structural parts. This technology bridges the gap between expensive, slow autoclave processes and lower-performance glass fiber SMC, making carbon fiber accessible for serial automotive production.

Metal Replacement

"Unlike woven carbon fabrics, the random orientation of chopped fibers in CF-SMC provides isotropic mechanical properties-equal strength in all directions within the plane."

Chassis
Load Bearing Design

The STM Process

From fiber placement to high-pressure consolidation.

1. Material Prep

Cutting and stacking fiber mats (SMC/BMC/Prepreg) in specific orientations.

2. Insert Loading

Placing metal inserts or cores into the mold cavity for structural reinforcement.

3. Compression

High pressure (up to 100 bar) ensures material flows into complex ribs and bosses.

4. Demolding

Ejection of the fully cured, structurally rigid part ready for assembly.

Tooling Capabilities

Robust molds built for high-pressure environments.

STM Mold Parameters

Mold Steel P20, 718, 1.2738 (High Toughness)
Shear Edge Vertical Shear Design (0.05mm clearance)
Heating System Thermal Oil / Electric (±3°C Uniformity)
Insert Technology Manual / Automated Insert Loading
Press Capacity Compatible with up to 4000 Tons

Structural Integrity

STM parts exhibit high stiffness and tensile strength, making them suitable for chassis components and battery trays that must withstand crash loads.

Insert Integration

Our molds are designed to accommodate metal inserts (aluminum/ steel) precisely, ensuring strong mechanical bonds and simplifying final assembly.

Corrosion Resistance

Unlike metal structures, STM composite parts are inherently resistant to rust and chemical corrosion, extending the vehicle's lifespan.

STM Applications

Critical components for modern vehicles.

Battery

Battery Enclosures

EV battery trays and covers. STM provides fire resistance, EMI shielding, and impact protection.

Chassis

Chassis Structure

Cross members, bulkheads, and suspension arms. Replacing heavy steel frames to improve fuel efficiency.

Wheel

Spare Wheel Pans

Integrated rear floor modules with high stiffness and excellent NVH properties.

Strengthen Your Designs with STM

"SUASE's STM tooling solutions empower you to build stronger, lighter, and more durable vehicles. Let's engineer the future together."

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