3D Printing MaterialsStratasysSLA
Somos® ProtoGen™ 18420
A rigid, high-temperature SLA material for functional parts requiring thermal stability, mechanical strength, and an excellent surface finish.
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Somos® ProtoGen™ 18420 is a durable, white stereolithography resin designed for creating parts that maintain accuracy under thermal stress. Its primary benefit is the combination of high heat resistance and excellent mechanical properties, delivering a smooth, injection mold-like finish. This makes it ideal for functional prototypes, tooling, and end-use components in the automotive and manufacturing sectors.
Somos® ProtoGen™ 18420 for Heat-Resistant Functional Parts
This ABS-like photopolymer is engineered for stereolithography (SLA) systems, providing a solution for creating rigid and thermally stable components. It cures into a durable, opaque white solid that accurately reproduces fine details. Its key differentiator is its ability to balance high heat resistance with strong mechanical performance, making it a reliable choice for demanding industrial applications.
Thermal Stability and Mechanical Performance
ProtoGen™ 18420 is engineered to withstand challenging thermal environments, with a heat deflection temperature (HDT) of up to 98°C (208°F). This ensures parts maintain their structural integrity and dimensional accuracy when exposed to heat. The material also provides excellent tensile and flexural strength, making it suitable for load-bearing applications like housings, jigs, and fixtures.
Excellent Surface Quality and Detail
Parts printed with ProtoGen™ 18420 feature a smooth, non-porous surface finish directly from the printer, significantly reducing the need for post-processing. This specified finish mimics the appearance of final injection-molded parts, which is ideal for creating professional-grade prototypes and aesthetic components that require fine detail and precision.
Design and Processing Guidelines
This material is compatible with SLA 3D printing technology. Standard SLA support structure strategies are effective, and parts are easy to clean post-print. To achieve optimal mechanical and thermal properties as detailed in the technical datasheet, a UV and thermal post-curing process is required. Like most photopolymers, it should be handled with care to avoid prolonged skin contact and stored away from UV light sources.
From Functional Prototype to End-Use Part
ProtoGen™ 18420 is a versatile material that serves applications across the product lifecycle. It is defined enough for rigorous functional testing and validation of prototypes, while its durability and thermal resistance make it a viable option for creating low-volume production parts, custom tooling, and manufacturing aids.
- Available colours
- White
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