Isovolta EHG250-68-50

Additional Product Information

Overview

EHG250-68-50 is a high-performance fiber-reinforced thermosetting prepreg material designed for the aviation and aerospace industries. It is ideal for manufacturing lightweight, durable secondary aircraft structures such as radomes, fairings, and leading edges. Teams rely on it for its exceptional mechanical properties, strong adhesion to core and metallic materials, and flame-retardant characteristics, enabling reliable use in demanding MRO and AOG scenarios.

Key Technical Specs for EHG250-68-50

• Type: Fiber-reinforced thermosetting prepreg
• Fabric: E-glass filament yarn Style 7781, 8H satin weave
• Fabric Weight: 296 g/m 5%
• Resin: EH250 epoxy, 53% by weight
• Prepreg Weight: 620 30 g/m
• Volatile Content: < 1.5%
• Resin Flow: > 20%
• Tackiness: Medium to high, adjustable
• Service Temperature (Cured State): -55 C to +80 C (-67 F to +176 F)
• Curing Range: 120 C to 160 C (248 F to 320 F), 0.07 MPa minimum pressure
• Typical Uses: Monolithic and sandwich structures, lightweight composite panels, honeycomb core bonding
• Shelf Life: 5 days at room temperature, 6 months at -18 C (0 F)

Approvals & Specifications

• DLN Compliant
• LN 29549 WL 8.4321.2 A
• MHB 75-T-2-0002-2-1 (certification)
• FAR 25.853 Flame Test self-extinguishing

Typical Aircraft MRO / AOG Applications

• Secondary aircraft structures
• Radomes
• Fairings
• Leading edges
• Lightweight sandwich panels

Compatibility & Safety Notes

• Strong adhesion to metallic substrates and honeycomb cores
• Use appropriate PPE: gloves, eye protection, and respirators if necessary
• Handle in well-ventilated areas
• Store rolls at -18 C (0 F) for extended shelf life
• Follow recommended curing cycles to ensure mechanical performance

Packaging & Procurement

• Delivery Form: Rolls
• Roll Length: 50 m / Roll Width: 1.0 m
• Storage: 5 days at RT, 6 months at -18 C (0 F)
• Easy handling due to adjustable tackiness and self-adhesive resin
• Suitable for press, autoclave, or vacuum-bag curing processes

Why EHG250-68-50 is Chosen for AOG / MRO

• Reliable adhesion and mechanical performance for urgent repairs
• Versatile curing methods for various fabrication environments
• Adjustable tackiness enables rapid layup of complex shapes
• Lightweight yet durable, optimizing aircraft performance
• Flame-retardant and high-temperature resistant for safety compliance

Practical Suggestions for Your Team (AOG Mindset)

• Keep pre-cut rolls on hand for rapid response repairs
• Train maintenance personnel in handling and curing cycles
• Ensure storage conditions are monitored for optimal shelf life
• Use small batches to prevent wastage while maintaining readiness
• Label prepreg rolls with production dates for inventory control

Manufacture / Aviation Spec Codes

• Manufacturer: ISOVOLTA Kassel GmbH
• Product ID: EHG250-68-50
• MIL/OEM/Export Codes: LN 29549 WL 8.4321.2 A, MHB 75-T-2-0002-2-1

Alternative Names & Descriptions

• EHG250 8H Satin Prepreg
• EH250 Epoxy E-Glass Prepreg
• Aircraft Composite Prepreg EHG250-68-50
• High-Toughened E-Glass Epoxy Laminate
• Honeycomb Core Bonding Prepreg