Knowde Enhanced TDS
Identification & Functionality
- Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
Applications & Uses
- Applications
- Application Method
- Cure Method
- Uses
Magna-Tac M773 is used for:
- Bonding rigid expanded plastic foams to themselves or to metal, plywood, or other rigid materials;
- Bonding a wide variety of skins to cores (expanded polystyrene foam, foamed glass, honeycomb, etc.) in the fabrication of sandwich panels.
- Bonding all metals and other rigid materials (such as glass, ceramics, most plastics, plastic foams, structural laminates) to themselves and to each other.
Note - Fully cured panels consisting of degreased steel or etched aluminum skins and foamed glass cores produced with this adhesive pass FPL Test Cycles (ASTM Test D1037-55T), also given in ASTM C481, Cycle A.
Mixing Ratio (by weight) Properties Pot Life at 77°F Aver. Tensile Strength
Part A
Part B100 PARTS
100 PARTSFor best balance
of properties.2-3 hours
(1 qt)2200 psi - Application
Surface Preparation
All bonding surfaces must be thoroughly cleaned, degreased and dried. For plastic surfaces, remove mold release if any.
Preparation of Adhesive
Always stir each part thoroughly first. Proportion accurately and mix slowly to avoid entrapping air. Magna-Tac M773 Part A is colored red; Part B is colored Amber. Mix equal amounts (by volume) and stir until the color of the mixture is uniform. Note: Pot life can be lengthened substantially if shallow mixing vessels are used or smaller batches are mixed. Cover mixed material to prevent water absorption. Mixed adhesive may be applied with paint roller, brush or conventional spray equipment, etc. Apply enough mixed adhesive to leave about 4-6 mils in the final glue line. This may be accomplished by coating 4-6 mils on one surface only or by coating 2-3 mils on each surface. If one surface is porous, more adhesive must be applied to fill the voids and yet produce a final glue line thickness of 4-6 mils.
Mix Ratio
Magna-Tac M773 Part A - 100 parts Magna-Tac M773 Part B - 100 parts.
- Curing Information
Cure Time
Room Temperature At room temperature, assemblies can be handled in approximately 8-14 hours. Magna-Tac M773 develops 85% of its maximum strength in 24-48 hours. NOTE: The bond continues to advance in strength for approximately one week.
Typical lap shear values obtained when Magna-Tac 666 is used to bond 0.064" etched 2024T3 aluminum alloy to itself in a 1/2 overlap are as follows:
Test Temperature Tensile Shear, psi
-67°F 2000 77°F 2500 180°F 400 Fast Cure
If a faster cure is required, the following cycles may be used:
Elevated Temperatures
Temperature Cure Time 150°F 120 minutes 200°F 45 minutes 250°F 30 minutes 300°F 10 minutes Bonds will continue to improve in strength at room temperature until optimum is reached, usually within 3- 4 days.
- Materials It Protects
Bonding rigid expanded plastic foams to themselves or to metal, plywood, or other rigid materials; Bonding a wide variety of skins to cores (expanded polystyrene foam, foamed glass, honeycomb, etc.) in the fabrication of sandwich panels. Bonding all metals and other rigid materials (such as glass, ceramics, most plastics, plastic foams, structural laminates) to themselves and to each other.
- Base
Modified epoxy
Properties
- Diluent
- Do not dilute
- Typical Properties
- Composition
| Value | Units | Test Method / Conditions | |
| Glass Transition (Tg) | 57.07 | °C | — |
| Hardness | 60 - 70 | Shore D | — |
| Dielectric Constant (105 cps) | 2085 - 3.65 | — | — |
| Volume Resistivity (22 - 28 °C) | Min 1.00 x 10¹² | ohm-cm | — |
| Thermal Coefficient of Expansion | 65 x 10⁻⁶ | inches/inches/°C | — |
| Viscosity (77°F, Part B) | 1000 | cps | — |
| Viscosity (77°F, Part A) | 20,000 | cps | — |
| Weight Per Gallon (Part A) | 9.5 | lbs | — |
| Weight Per Gallon (Part B) | 8.2 | lbs | — |
| Strength | 2200.0 | psi | — |
| Pot Life (1 quart) | 45.0 | minutes | — |
| Value | Units | Test Method / Conditions | |
| Solid Content (Part A) | 97.0 | % | — |
| Solid Content (Part B) | 100.0 | % | — |
Regulatory & Compliance
- Certifications & Compliance
Packaging & Availability
- Container Sizes
- 1 quart cans
- 1 gallon cans
- 5 gallon pails
- 55 gallon drums
Storage & Handling
- Shelf Life
- 1 year