SLA – Tough 1500 Resin

Tough 1500 Resin V2 is a 3D printing material designed for Stereolithography (SLA) technology, optimized for strength, stiffness, and toughness comparable to polypropylene (PP), offering exceptional resistance to fractures, impacts, and shattering. Create parts that balance stiffness and ductility, whether for compliant mechanisms or rugged enclosures with self-tapping screws and snap fits. Tough 1500 Resin V2 enables a wide range of applications, from functional prototypes to end-use jigs and fixtures. It is part of the “Tough” series of resins, known for simulating the mechanical properties of engineering plastics, such as ABS and Polypropylene.

Key Material Facts:

• Tougher Where It Matters: 10 times higher work of fracture, so parts don’t fail when drilled, tapped, or cracked. Three times higher Gardner impact strength for thin walls that don’t shatter.
• Ductile and Resilient for Long-Lasting Compliant Parts: Extremely high elongation at break (155%) and Ross flex fatigue (8,000 cycles) for features like snap fits and compliant mechanisms.
• High Environmental Stability for Demanding Applications: The highest temperature and UV resistance (66 °C HDT and –30.4% EAB* after 400 hours accelerated aging) of any high-compliance (>100% EAB) SLA material.
• Tough Parts That Don’t Deform Over Time: High creep resistance matching polypropylene, with less than 3% strain under 7 MPa load after 2 weeks.
• Parts can be printed solid and air / fluid tight right off the printer, no sealing required
• Strong and Precise parts that create accurate and robust parts, ideal for
  rapid prototyping, functional testing and product development.
• Compatible with assembly features including:
  • Glue Joints / light welding
  • Printed In Threads (However Helicoils are recommended)

Common Applications:

• Prototypes requiring the toughness, compliance and resilience of polypropylene.
• Tough and rugged enclosures with functional elements like self-tapping screw bosses and snap fits.
• Impact resistant jigs and fixtures that survive long term use on the factory floor.
• Parts that need a combination of stiffness and ductility to create compliant mechanisms like latches, flexures, and dampers.

Material Reference Data:

• For more information on how the SLA printing process works please check out this page.
• For SLA part design trick and tips check out this page.
• Material manufacturers website

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SLA – Tough 2000 Resin: Technical specifications

Mechanical Properties – Post-cured for 120 minutes at 80 °C.

Property Description	Measurement (Metric)	Measurement (English)
Ultimate Tensile Strength (MPa | PSI)	34	4930
Tensile Modulus (MPa | KSI)	1460	212
Elongation at Break	155%	155%
Flexural Strength (MPa | PSI)	41	5950
Flexural Modulus (GPa | KSI)	1370	199
Notched Izod (J/m | ft-lbf/in)	42	0.79
Unnotched Izod (J/m | ft-lbf/in)	910	17.0
Heat Deflection Temperature – Post-Cured 5 min (Ambient)	66°C @ 0.45 MPa (66 PSI) 53°C @ 1.82 MPa (264 PSI)	151 °F @ 0.45 MPa (66 PSI) 127°F @ 1.82 MPa (264 PSI)
Thermal Expansion (0-150°C)	99 μm/m/°C	55 μin/in/°F

SLA – Tough 1500 Resin Solvent Compatibility

Percent weight gain over 24 hours for a printed and post-cured 1 x 1 x 1 cm cube immersed in respective solvent

Solvent	24 hr weight gain, %
Acetic Acid 5%	0.5
Acetone	37.3
Bleach ~5% NaOCl	0.4
Butyl Acetate	4.5
Diesel Fuel	6.9
Diethyl glycol Monomethyl Ether	6.2
Hydraulic Oil	0.3
Hydrogen peroxide (3%)	0.6
Isooctane (aka gasoline)	3.4
Isopropyl Alcohol	15.6
Mineral oil (Light)	0.3
Mineral oil (Heavy)	0.3
Salt Water (3.5% NaCl)	0.9
Skydrol 5	6.9
Sodium Hydroxide solution (0.025% PH 10)	0.6
Strong Acid (HCl conc)	0.4
Water	0.8
TPM	0.9
Xylene	4.1

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SLA – Tough 2000 Resin: Part Gallery