3Dresyn Acetal POM-like Polyoxymethylene Low-Friction Engineering Resin

3Dresyn® Acetal POM-like is a high-performance engineering photopolymer designed to replicate the mechanical behaviour of acetal (POM), combining high stiffness, toughness and low-friction characteristics with excellent chemical resistance.

The formulation provides improved optical clarity compared to conventional acetal-like systems while maintaining hydrophobic behaviour and ultra low water absorption. It is available in HV (higher mechanical performance) and LV (lower viscosity) versions to ensure compatibility across a wide range of SLA, DLP and LCD systems.

Designed for functional engineering and biomedical applications requiring high stiffness, dimensional stability, low friction and chemical resistance.

• High-stiffness functional engineering components
• Low-friction parts and mechanical interfaces
• Jigs, fixtures and wear-resistant elements
• Durable housings and structural components
• Biomedical and technical components requiring chemical resistance and low water uptake

• Tensile strength: <50 MPa (ISO 527-1 / ISO 527-2)
• Flexural strength: <80–90 MPa (ISO 178)
• Young’s modulus: 2500-3000 MPa (ISO 527)
• Elongation at break: <25% (ISO 527)
• Impact resistance: Notched Izod <40 J/m (ISO 180)
• Shore hardness: D80–85 (ISO 868)

• Density: 1.0–1.1 g/cm³ (ISO 1675)
• Water absorption: ultra low (hydrophobic behaviour) (ISO 62)
• Printing shrinkage: no measurable dimensional shrinkage after calibration under validated processing conditions
• Appearance: clear with slight tint unless pigmented
• Chemical resistance: high

• Heat deflection temperature (HDT): >90 °C @ 0.45 MPa (ISO 75)
• Glass transition temperature (Tg): >90 °C (ISO 11357-2)

• POM-like stiffness and dimensional stability
• Low-friction surface behaviour
• High resistance to chemicals and solvents
• Hydrophobic performance with ultra low water uptake
• Durable and wear-resistant under mechanical stress

• Printing technologies: SLA, DLP and LCD
• Wavelength range: 385–405 nm
• HV version: optimized for maximum mechanical performance
• LV version: optimized for improved flow and ease of processing
• Compatible with open-parameter systems
• Optimized using 3Dresyns IFU and calibration workflow

• Biocompatible formulation platform
• Final device must be validated according to ISO 10993
• Manufacturing aligned with ISO 13485
• Organo-tin free formulation

Material properties are measured under controlled laboratory conditions and may vary depending on printer type, exposure conditions, layer thickness, build orientation and post-processing workflow.

This material is supplied as a professional engineering material. Final part performance and suitability must be validated by the user according to the intended application and regulatory requirements.

For Acetal / POM-like 3D printing applications, compare other rigid engineering resin routes when the priority shifts from low-friction and chemical-resistant behaviour toward optical clarity or higher impact resistance.

• Engineering & Functional 3D Resins
• 3Dresyn PMMA-like
• 3Dresyn PC-like

This technical datasheet should be used together with the relevant processing, calibration, safety and workflow documentation available in the 3Dresyns® Resources section.

Access the 3Dresyns® Technical Resources (IFU, calibration, CRT, post-processing and troubleshooting)