SHD Prepreg composite material
Epoxy prepreg

LTC216-3

Epoxy Carbon / Glass Tooling
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Key Features & Benefits

Key Feature High performance, low cure temperature, long outlife
Application Aerospace low temp tooling
Initial Cure Temp 115°F- 160°F
Initial Cure Time 50 Hours- 5 Hours
Post Cure Option Yes
Outlife 8 days at 70°F
TG Onset* 424°F -DMA
TG Peak* 468°F -DMA
Toughened No
Cure Autoclave
Availability All sites

LTC216-3 prepreg is designed to cure at low temperatures whilst giving the potential for high temperature tooling. Typical initial cure cycles are 50 hrs at 45°C (113°F) or 18 hrs at 55°C (131°F), followed by a 200°C (392°F) post cure. LTC216-3 can be supplied on a variety of fabrics to meet your cost and manufacturing requirements.

Why choose this material

LTC216-3 combines longer outlife with high performance. Specifically engineered for aerospace, this is a high performing tooling prepreg.

Supplied with SHD's renowned service, including:

  • Short two-week lead times and low MOQs

  • Exceptional product quality

  • First class technical support

  • Excellent customer service

  • The same manufacturing equipment and processes across all sites

Advanced composite solutions for aerospace (passenger plane seating)

Recommended markets

Aerospace

Advanced composites specified across major commercial aircraft today
Find out more

Technical Guidance Information

01

Storage and Out Life

This material should be kept frozen at -18°C (0°F). It must be kept sealed in a polythene bag which must not be opened until fully thawed to room temperature. If the material is not fully used, then the material must be resealed in the polythene bag to prevent moisture absorption.

02

Health and Safety

This material contains epoxy resin which can cause allergic reactions with skin contact and must avoid repeated and prolonged skin contact.

Please refer to the product Safety Data Sheet before using this material. The following precautions must be taken when using epoxy resin prepregs:

  • Overalls must be worn

  • Impervious gloves must be worn

  • Curing schedule is meant to be as a guide only and is subject to local conditions

  • To avoid exotherm, particular care must be taken with thick laminates

  • Ramp rates must not exceed 1.0°C (2.0°F)/min during initial cure and 0.3°C (0.5°F)/min during post cure

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Frequently Asked Questions

01

Is this a suitable prepreg for large aerospace tooling?

LTC216-3 is designed for aerospace tooling that needs a longer working life during lay-up. It cures at low temperatures and can reach service temperatures up to 210°C (410°F) after post-curing. 

02

Can low-temperature prepreg be used for high-temperature tooling?

Yes. LTC216-3 can cure from 45°C (115°F), then be post-cured for use at temperatures up to 210°C (410°F). This makes it useful where gentle initial curing and high final heat resistance are both important. 

03

What prepreg is suitable for tooling with a long lay-up time?

LTC216-3 offers around eight days of working life at 20°C (70°F), giving teams more time to lay up larger or more complex tools before curing. 

04

How can I reduce movement or distortion in composite tooling?

Using a prepreg with low shrinkage and low thermal expansion can help. LTC216-3 is designed to stay stable through heating and cooling, helping finished tools keep their shape and accuracy. 

05

Is there a tooling prepreg that is easier to handle in warm conditions?

Yes. LTC216-3 is designed to handle well in warmer working conditions, making lay-up easier where workshop temperatures are higher or where large tools take longer to complete. 

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