Formlabs Tough 1500 Resin V2

# Formlabs Tough 1500 Resin V2

Overview

Formlabs Tough 1500 Resin V2 is an engineering SLA resin for parts that need stiffness, ductility, impact resistance, and resilience in the same material. Formlabs positions it in a polypropylene-like mechanical range, making it useful for functional prototypes, snap fits, compliant mechanisms, rugged housings, jigs, fixtures, connectors, and end-use parts that must flex without behaving like a soft elastomer.

The V2 formulation is significantly tougher than the previous Tough 1500 generation. Formlabs reports 10× higher fracture toughness, 34 MPa ultimate tensile strength, 155% elongation at break, and 1,011 J/m² work of fracture after post-curing. Post-cured heat-deflection temperature is 66°C at 0.45 MPa and 53°C at 1.8 MPa.

Tough 1500 Resin V2 sits between the more ductile Tough 1000 Resin and the stronger, stiffer Tough 2000 Resin V2. That middle position is useful for parts that need to bend, latch, flex, or absorb impact while still holding structural shape.

For current product information and pricing, see the official Tough 1500 Resin V2 product page. Detailed test methods are available in the official Tough 1500 Resin V2 technical data sheet.

Key Strengths

• 34 MPa post-cured ultimate tensile strength
• 1,460 MPa tensile modulus
• 155% elongation at break
• 41 MPa flexural strength
• 1,370 MPa flexural modulus
• 42 J/m notched Izod impact strength
• 910 J/m unnotched Izod impact strength
• 1,011 J/m² work of fracture
• 1.7 MPa·m½ maximum stress-intensity factor
• 8,000-cycle Ross flex fatigue
• 66°C HDT at 0.45 MPa
• 53°C HDT at 1.8 MPa
• 76D Shore hardness
• Polypropylene-like balance of stiffness and ductility
• 50 µm and 100 µm print settings
• 1 L and 5 L formats
• Grey finish

Best For

1. Functional prototypes
2. Snap fits and latches
3. Compliant mechanisms
4. Rugged housings
5. Self-tapping screw bosses
6. Jigs and fixtures
7. Connectors
8. Impact-resistant production aids
9. End-use parts with controlled flex
10. Polypropylene-like functional validation

Technical Specifications

Published values are typical Formlabs test results and can vary with geometry, print orientation, settings, post-processing, and temperature.

Polypropylene-Like Mechanical Behavior

Tough 1500 Resin V2 is designed to behave more like a tough thermoplastic than a brittle standard photopolymer.

It remains structurally stiff, but its high elongation allows features such as snap hooks, latches, compliant clips, protective housings, and temporary interference fits to deform substantially before failure.

This makes it useful for prototypes that will eventually be molded in polypropylene. The resin is not chemically identical to PP, but its mechanical range can make functional evaluation more meaningful than using a rigid visual-prototyping resin.

Mechanical and Impact Performance

Formlabs reports the following post-cured values:

The 155% elongation figure is important, but the impact and fracture data explain why the material is useful for thin walls and functional features that need to bend or absorb load without shattering.

Formlabs also reports 10× higher fracture toughness than the previous Tough 1500 formulation.

Heat Resistance

Post-cured Tough 1500 Resin V2 has two published HDT values:

• 66°C at 0.45 MPa
• 53°C at 1.8 MPa

The lower-load value is useful for comparison, but the 53°C result is the more conservative reference under the higher load.

Thermal suitability should therefore be evaluated using actual service stress rather than treating 66°C as a universal operating temperature.

Creep Resistance

Formlabs reports less than 3% strain after two weeks under a 4 MPa load at 22°C in its creep evaluation.

That makes Tough 1500 Resin V2 relevant to loaded clips, latches, fastened housings, fixtures, and alignment features where long-term deformation matters.

Creep increases with temperature and time, so production parts should still be tested under their real service conditions.

Printer Compatibility

Tough 1500 Resin V2 is designed for Form 4-generation systems.

Current Formlabs compatibility resources support:

• Formlabs Form 4
• Form 4B
• Form 4L
• Form 4BL

The material uses Form 4-generation resin tanks and validated PreForm profiles. Current settings are 50 µm and 100 µm.

The V2 formulation depends on Form 4-generation hardware and is not the same profile as legacy Tough 1500 formulations used on older Form 2 or Form 3 systems.

Print Preparation

Formlabs recommends using current PreForm software and the correct Tough 1500 Resin V2 profile.

A practical requirement is that Tough 1500 Resin should be printed on supports rather than directly on the build platform.

For snap fits, flexures, and other critical functional geometry, orientation and support placement should be chosen around load direction and the surfaces that need the best finish.

Washing, Drying, and Post-Curing

Printed parts must be washed, dried fully, and post-cured before they reach their intended final properties.

Formlabs recommends following the current Form Wash or Form Wash L settings and allowing parts to dry fully before curing. The product page recommends at least 10 minutes of air drying after washing for good surface finish.

The current TDS mechanical values were measured on Form 4 parts printed at 100 µm and post-cured at 70°C for 12 minutes in a Form Cure V2. Users should still follow the latest cure settings for their specific Form Cure or Form Cure L model because Formlabs updates material profiles over time.

Skin-Contact Use

Formlabs lists Tough 1500 Resin V2 for skin-contact use when the validated workflow is followed.

The TDS reports ISO 10993-1 evaluation endpoints including:

• Not cytotoxic
• Not an irritant
• Not a sensitizer

For skin-contact use, Formlabs specifies washing in ≥99% IPA for 20 minutes in a Form Wash before drying and curing.

This does not imply broad medical-device approval. The qualified processing workflow and intended contact category still matter.

Cartridge Handling

Formlabs has published support guidance for the newest Tough-family cartridges because the bite valve can swell over time.

For cartridges from lot 20251022 or later, Formlabs provides a printable shim to reduce dispensing interruptions. Earlier lots have different handling instructions and should follow current support guidance rather than automatically using the shim.

See Using Tough 1500 Resin V2 for the latest cartridge, washing, and curing instructions.

Comparison Table: Formlabs Tough Resin Family

Tough 1500 Resin V2 vs Tough 1000 Resin

Tough 1000 Resin is more ductile, with 180% elongation at break, and is designed around wear, fatigue resistance, and low-friction behavior.

Tough 1500 V2 is stronger and stiffer at 34 MPa tensile strength and 1,460 MPa tensile modulus, compared with 26.3 MPa and 932 MPa for Tough 1000.

Choose Tough 1000 for highly ductile, low-friction, or fatigue-heavy parts. Choose Tough 1500 V2 when polypropylene-like stiffness, snap-fit behavior, and a higher HDT are more important.

Tough 1500 Resin V2 vs Tough 2000 Resin V2

Tough 2000 Resin V2 is the stronger and stiffer option, with 40.4 MPa tensile strength, 1,800 MPa tensile modulus, 79% elongation, and 70°C HDT at 0.45 MPa.

Tough 1500 V2 gives up some stiffness and heat resistance in exchange for much greater elongation and work of fracture.

Choose Tough 2000 V2 for robust fixtures, protective shells, and rigid functional parts. Choose Tough 1500 V2 for snap fits, compliant mechanisms, and housings that need to flex before failure.

Tough 1500 Resin V2 vs Flexible 80A Resin V2

Flexible 80A Resin V2 is a true elastomeric resin with approximately 83A Shore hardness, 10 MPa tensile strength, and 230% elongation at break.

Tough 1500 V2 remains much more structurally rigid. It is intended for parts that must hold shape and carry load while still tolerating substantial deflection.

Choose Flexible 80A V2 for seals, gaskets, soft inserts, padding, grips, and rubber-like components. Choose Tough 1500 V2 for structural polypropylene-like parts.

Tough 1500 Resin V2 vs Polypropylene

Formlabs uses extrusion-grade polypropylene as a reference material for Tough 1500 Resin V2.

This makes Tough 1500 V2 useful for evaluating fit, snap behavior, deflection, and functional concepts before molded polypropylene production.

The materials are not chemically identical, so final production qualification should still use the actual thermoplastic and manufacturing process.

Price and Availability

Formlabs currently lists Tough 1500 Resin V2 from US$149 in the United States, approximately €128.62 in Europe, £109.86 in the United Kingdom, AED 547.20 in the UAE, C$206.33 in Canada, A$209.38 in Australia, ₹14,243 in India.

It is offered in 1 L and 5 L configurations, with volume discounts available for larger orders. Actual regional prices may differ because of local pricing, taxes, shipping charges, exchange-rate changes, promotions, and availability.

Limitations and Practical Considerations

• Washing and post-curing are required for final properties.
• Tough 1500 V2 is ductile but not a soft elastomer.
• HDT is 66°C at 0.45 MPa and 53°C at 1.8 MPa.
• Mechanical values vary with geometry, orientation, settings, and post-processing.
• Formlabs recommends printing on supports rather than directly on the build platform.
• Formlabs notes that V2 has a stronger odor than its predecessor.
• Skin-contact use requires the validated Formlabs workflow.
• Cartridge bite-valve swelling can affect some Tough-family cartridges.
• Chemical resistance varies considerably by solvent and exposure time.
• Polypropylene-like behavior does not make the resin chemically identical to PP.
• Tough 1000 is better when maximum ductility and wear resistance are the priority.
• Tough 2000 V2 is better when greater strength and stiffness are required.
• Flexible 80A V2 is better for rubber-like deformation.

Frequently Asked Questions