Toray Advanced Composites’ TC346-- Material of Choice for Most Advanced F1 Cars

July 06 2020

Toray Advanced Composites’ newest and most advanced motorsport prepreg system, TC346, has set the bar high for composite solutions. It was created from a direct pull from Formula One (F1) teams that were unable to find a solution for their most demanding applications with existing materials. Over the course of 3 years of development, in conjunction with multiple F1 teams, Toray Advanced Composites has surpassed all the demands and has demonstrated that TC346 will be the material of choice for the most advanced F1 cars on this year’s starting grid.

Toray TC346 was developed for Formula 1’s gearbox and suspension applications where high service temperature and high interlaminer and fracture toughness is required, however, this material also opens up opportunities to support further lightweighting for components where superior toughness and performance are needed. TC346 is a high temperature epoxy, with better room temperature dry (RTD) compression strength (CS), interlaminar shear strength (ILSS), in plane shear modulus (IPSM), and improved elevated temperature dry (ETD) tensile strength (TS), CS, & ILSS, compared to legacy materials.

Toray TC346 Product Features:
• Excellent retention of properties at high temperatures
• High Compression, ILSS and G1C
• Tg Onset – 209°C (408°F)
• Tg Peak Tan – 220°C (428°F)
• 21 Days Shop Life – 6 months at -18°C
• Passes SFI 56.1 flame retardancy at one ply thickness:
 Tested on: TC346 HM0545 200g 2x2 Twill HM63 42% Resin Content
 SFI certification is required for all composite components used in NASCAR
• Passes UL94 V0 flame retardancy at 2 mm thickness:
 Tested on: TC346-00 HM0545 200gsm 2x2 Twill HM63 12K 42% Resin Content.
• Density 1.3 g/cm3
• Available with a variety of fibers in a number of fabric styles and as unidirectional tapes

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