SLA Material Properties — Formlabs Resins
Detailed mechanical and thermal properties for all SLA resins available at PartSnap. Use this data to select the right material for your application.
All properties below are post-cured per Formlabs recommendations. Values are typical and may vary based on part geometry, orientation, and layer height.
Standard Resins (In Stock)
Grey, Black & White Resin (General Purpose)
Our default SLA materials. Excellent surface finish, good all-around mechanical properties. Ideal for visual prototypes, form checks, and presentation models.
| Property | Green | Post-Cured | Test Method |
|---|---|---|---|
| Ultimate Tensile Strength | 46 MPa (6,672 psi) | 62 MPa (8,992 psi) | ASTM D638 |
| Tensile Modulus | 2,200 MPa (319 ksi) | 2,675 MPa (388 ksi) | ASTM D638 |
| Elongation at Break | 22% | 13% | ASTM D638 |
| Flexural Strength | 58 MPa (8,412 psi) | 88 MPa (12,763 psi) | ASTM D790 |
| Heat Deflection Temp | — | 58°C (136°F) @ 0.45 MPa | ASTM D648 |
| Hardness | — | 84 Shore D | ASTM D2240 |
Clear Resin
Translucent to optically clear (with post-polishing). Same base mechanical properties as standard resins. Best for light pipes, fluidic devices, and any application requiring transparency.
| Property | Green | Post-Cured | Test Method |
|---|---|---|---|
| Ultimate Tensile Strength | 46 MPa (6,672 psi) | 60 MPa (8,702 psi) | ASTM D638 |
| Tensile Modulus | 2,200 MPa (319 ksi) | 2,750 MPa (399 ksi) | ASTM D638 |
| Elongation at Break | 13% | 8% | ASTM D638 |
| Flexural Strength | 58 MPa (8,412 psi) | 86 MPa (12,473 psi) | ASTM D790 |
| Light Transmission | Translucent as-printed; near-optical with sanding + clear coat | — | |
Rigid Resin (Glass-Filled)
Extremely stiff and strong. Glass-filled for maximum rigidity. Ideal for jigs, fixtures, tooling, and any application where stiffness is critical. Not suitable for parts that need to flex.
| Property | Post-Cured | Test Method |
|---|---|---|
| Ultimate Tensile Strength | 72 MPa (10,440 psi) | ASTM D638 |
| Tensile Modulus | 4,100 MPa (595 ksi) | ASTM D638 |
| Elongation at Break | 5% | ASTM D638 |
| Flexural Modulus | 3,700 MPa (537 ksi) | ASTM D790 |
| Heat Deflection Temp | 82°C (180°F) @ 0.45 MPa | ASTM D648 |
| Hardness | 86 Shore D | ASTM D2240 |
Specialty Resins (Available on Request)
Tough 1000 Resin (HDPE-Like)
High impact resistance, excellent fatigue life, and good ductility. Simulates HDPE behavior — bends and flexes without snapping. Ideal for snap fits, living hinges, and parts that take repeated impact.
| Property | Post-Cured | Test Method |
|---|---|---|
| Ultimate Tensile Strength | 34 MPa (4,930 psi) | ASTM D638 |
| Tensile Modulus | 1,500 MPa (218 ksi) | ASTM D638 |
| Elongation at Break | 45% | ASTM D638 |
| Impact Strength (Notched Izod) | 58 J/m (1.09 ft·lbf/in) | ASTM D256 |
| Heat Deflection Temp | 42°C (108°F) @ 0.45 MPa | ASTM D648 |
| Comparable To | HDPE, Polypropylene | |
Tough 2000 Resin (ABS-Like)
High strength with moderate flexibility. The closest SLA resin to injection-molded ABS. Good for functional prototypes, enclosures, and end-use parts requiring a balance of stiffness and toughness.
| Property | Post-Cured | Test Method |
|---|---|---|
| Ultimate Tensile Strength | 46 MPa (6,672 psi) | ASTM D638 |
| Tensile Modulus | 2,200 MPa (319 ksi) | ASTM D638 |
| Elongation at Break | 35% | ASTM D638 |
| Impact Strength (Notched Izod) | 38 J/m (0.71 ft·lbf/in) | ASTM D256 |
| Heat Deflection Temp | 52°C (126°F) @ 0.45 MPa | ASTM D648 |
| Comparable To | ABS | |
Material Selection Quick Reference
| I Need… | Use This |
|---|---|
| General prototyping, best value | Standard Grey/Black/White |
| See-through or transparent parts | Clear |
| Maximum stiffness (jigs, fixtures) | Rigid (glass-filled) |
| Snap fits, living hinges, impact resistance | Tough 1000 (HDPE-like) |
| Functional ABS-like prototypes | Tough 2000 (ABS-like) |
| High temperature (>80°C) | Contact us — High Temp resin available on request |
| Biocompatible / dental / surgical | Contact us — Formlabs offers certified biocompatible resins |
Material data sourced from Formlabs technical data sheets. Full datasheets available at formlabs.com/materials.
Need Help Choosing?
Not sure which SLA material is right for your project? Send us your file and application requirements — we’ll recommend the best material and provide a quote within 1 business day.