Figure 4 Tough 65C Black is a production-grade black SLA material engineered for durable, high-impact parts that require both mechanical toughness and thermal stability. This black tough 3D printing resin supports functional prototyping and end-use production with predictable performance, consistent surface quality, and reliable dimensional control across repeated builds.
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Figure 4 Tough 65C Black delivers a balanced combination of strength and ductility. With a tensile strength of 41 MPa and elongation at break up to 35%, the material absorbs impact without brittle failure. In addition, a heat deflection temperature of 70°C at 0.455 MPa allows parts to maintain geometry under moderate thermal exposure, supporting housings, covers, and light mechanical assemblies. This performance profile makes the material well suited for high durability photopolymer applications that transition from prototype to production.
This production-grade black SLA material supports snap-fit features and repeatable flexing through controlled elongation at yield. Parts such as clips, tabs, and enclosures maintain fit and function without print-to-print variation. Isotropic strength across build orientations further improves reliability, allowing engineers to validate assemblies without re-orienting parts or adjusting process parameters.
Figure 4 Tough 65C Black is tested for long-term environmental stability, delivering up to eight years of indoor performance and 1.5 years outdoors under ASTM standards. The material meets UL94 HB flammability requirements and supports sterilization processes, expanding its use in regulated and safety-driven environments. Since it does not require secondary thermal curing, production teams reduce post-processing time while maintaining consistent mechanical behavior across builds.
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