Hexcel HEXPLY 916G-120-55% 285GSM

HexPly® 916G-120-55% Epoxy Glass Fibre Prepreg

Overview

HexPly® 916G-120-55% is a 120°C curing epoxy glass fibre prepreg engineered for the manufacture of lightweight composite structures. Combining a woven E-glass reinforcement with a high-performance epoxy resin system, the prepreg offers excellent mechanical properties, consistent fibre volume, and reliable processing characteristics. It is suitable for aerospace, industrial, tooling, and structural composite applications requiring controlled laminate quality and dependable curing performance.

Key Technical Characteristics

• Product Type: Epoxy glass fibre prepreg
• Resin System: 120°C curing epoxy
• Reinforcement: E-glass fabric
• Weave Style: 4 Harness Satin
• Nominal Prepreg Weight: 236 g/m²
• Reinforcement Weight: 106 g/m²
• Resin Content: 55% by weight
• Nominal Cured Ply Thickness: 0.141 mm
• Nominal Fibre Volume: 29.35%
• Resin Density: 1.30 g/cm�
• Fibre Density: 2.56 g/cm�
• Nominal Composite Density: 1.67 g/cm�

Core Performance Benefits

• Excellent balance of strength and stiffness
• Consistent fibre distribution for repeatable laminate quality
• Controlled cured ply thickness
• Good mechanical performance after curing
• Suitable for structural composite laminates
• Reliable processing using conventional prepreg curing methods
• Good dimensional consistency throughout manufacture
• Optimized for 120°C cure cycles

Typical Applications

• Aerospace composite structures
• Aircraft interior composite components
• Industrial composite laminates
• Composite tooling manufacture
• Structural composite panels
• General engineering composite parts
• Prototype and development components
• Lightweight glass fibre reinforced structures

Material Engineering & Design Features

HexPly® 916G-120-55% combines a woven 4 Harness Satin E-glass reinforcement with a controlled epoxy resin content to produce laminates with consistent fibre volume and predictable cured laminate properties. The balanced construction provides good drape characteristics while maintaining structural performance after curing.

Typical cured laminate mechanical properties include:

• Tensile Strength (Warp): 450 MPa
• Tensile Modulus (Warp): 23 GPa
• Flexural Strength (Warp): 550 MPa
• Flexural Modulus (Warp): 26 GPa
• Interlaminar Shear Strength (ILSS): 55 MPa

The relationship between resin content, fibre volume, and cured ply thickness enables manufacturers to accurately control laminate quality during production.

Installation & Handling

• Recommended cure cycle: 60 minutes at 120°C
• Recommended heat-up rate: 1-5°C per minute
• Recommended cure pressure: 0.8-10 bar
• Store in original sealed packaging until use
• Allow material to reach room temperature before opening to prevent condensation
• Do not unwind material while still cold
• Wear clean disposable gloves to prevent contamination during handling
• Follow approved prepreg processing procedures for laminate manufacture

Environmental & Compliance Notes

• Guaranteed frozen storage life: 12 months at -18°C
• Store in sealed moisture-resistant packaging
• Handle uncured resin systems using appropriate personal protective equipment
• Safety Data Sheet (SDS) available upon request
• Evaluate suitability for intended structural applications before production use

Key Advantages for Aerospace Use

• Controlled resin content provides consistent laminate quality
• Excellent mechanical properties for lightweight composite structures
• Reliable 120°C cure system compatible with conventional prepreg processing
• Good balance of strength, stiffness, and manufacturability
• Suitable for aerospace and industrial composite applications
• Predictable cured ply thickness simplifies laminate design
• High-quality woven E-glass reinforcement improves structural performance
• Long frozen storage life supports manufacturing flexibility