STM Mold
Structural Thermoset Molding.
Replacing Metal with High-Strength Composites.
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 STM tooling for critical applications where failure is not an option. Our expertise includes Insert Molding integration, where metal reinforcements are embedded directly during the molding process to enhance connection points and overall rigidity.
Metal Replacement
"STM is the key to automotive lightweighting, allowing for the consolidation of multiple stamped metal parts into a single, corrosion-resistant composite structure."
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 Enclosures
EV battery trays and covers. STM provides fire resistance, EMI shielding, and impact protection.
Chassis Structure
Cross members, bulkheads, and suspension arms. Replacing heavy steel frames to improve fuel efficiency.
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."
Work with Us