SHD Prepreg composite material
Epoxy prepreg

LTC410

Epoxy Long Outlife Tooling
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Key Features & Benefits

Key Feature Long out life
Application Long outlife, toughened, low temp Aerospace tooling
Initial Cure Temp 65°C- 80°C
Initial Cure Time 16 Hours- 4 Hours
Post Cure Option Yes
Outlife 21 days at 20°C
TG Onset* 192°C -DMA
TG Peak* 218°C -DMA
Toughened Yes
Cure Autoclave
Availability All sites

LTC410 prepreg is designed to cure at low to medium temperatures whilst giving the potential for high temperature tooling. It has been formulated to give extended outlife without compromising performance. It can be supplied on a variety of fabrics to meet your cost and manufacturing requirements.

Why choose this material

LTC410 provides a long out life for large tooling structures without compromising performance with optimised handling and flow characteristics. Available from all SHD sites in the UK, US and Europe.

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 composite tools that take several days to lay up?

LTC410 offers up to 21 days of working life at 20°C (70°F). This gives teams more time to complete larger or more complex tools without sacrificing the final performance of the material. 

02

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

Yes. LTC410 cures between 65°C and 80°C (149°F to 320°F), then can be post-cured for service temperatures up to 180°C (356°F). This makes it useful when lower curing temperatures and higher working temperatures are both needed. 

03

How can I reduce shrinkage in composite tooling?

Using a prepreg with low shrinkage and low thermal expansion can help tools keep their shape and accuracy. LTC410 is designed with both properties, helping reduce movement as the tool heats and cools. 

04

What prepreg is suitable for aerospace composite tooling?

LTC410 is designed for tough, low-temperature aerospace tooling with a long working life. It also provides a good surface finish and can be supplied on different fabrics to suit the tool and manufacturing process. 

05

What is the difference between LTC410 and LTC400?

Both offer long working times and low-temperature curing. LTC400 provides up to 30 days at 20°C (70°F), while LTC410 offers 21 days at 20°C (70°F) and is a toughened system designed for aerospace and general tooling applications.

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