ARALDITE® 1258 A/B

ARALDITE® 1258 A/B is a two-component, aluminum-filled paste. The system forms a bond that is often stronger than the materials being bonded. ARALDITE® 1258 A/B conforms to surfaces without heat or pressure and hardens in 2-4 hours at room temperature. Formulated to provide a strong, durable bond when used with a variety of substrates, this adhesive is well-suited for many industrial maintenance applications. It has been approved by the Armed Forces for making emergency repairs in the field.

RTU Product Type: 2K (2 component) Adhesive, Epoxy Adhesive, Repair Material

Application Area: Air Ducts, Radiator, Tank Lining, Tools

Compatible Substrates & Surfaces: Brick, Cement, Concrete, Glass, Metal, Plastics, Porcelain, Steel, Stone, Wood

Chemical Family: Epoxy & Epoxy Derivatives

Features: Durable, Easy to Mix

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Features and Benefits
  • Easy to thoroughly mix by hand for small batches
  • Bonds to steel, glass, porcelain, concrete and wood
  • Can be sanded, filed or machined, drilled or threaded with conventional tools

Applications & Uses

Application Area
Compatible Substrates & Surfaces
Markets
Applications
Processing Information

Mix Ratio

Product

Parts by weight

Parts by volume

Araldite® 1258 A Resin 100 100
Hardener 1258 B 100 100

Typical Cure Cycles

Temperature

Cure time

77°F (25°C) 6 hours
140°F (60°C) 30 min
212°F (100°C) 10 min

Pretreatment
The strength and durability of a bonded joint are dependent on proper pretreatment of the surfaces to be bonded. At the very least, joint surfaces should be cleaned with a good degreasing agent such as acetone or trichloroethylene, in order to remove all traces of oil, grease and dirt. Never use alcohol, gasoline or paint thinners. The strongest and most durable joints are obtained by either mechanically abrading or chemically etching (“pickling”) the degreased surfaces. Abrading should be followed by a second degreasing treatment.

Application Information
  • Rebuilding machinery
  • Lining wood or metal tanks
  • General maintenance such as resetting screws or bolts, or plugging cracks in metal
  • Patching cement and concrete
  • Fastening loose bricks and stones in place.
  • Repair plastic and conventional tools,
  • Building nesting fixtures and fill holes in castings
  • Repairing vacuum forms, air ducts and steam lines, radiators, cylinder drying tools, boiler jackets and other industrial equipment/parts

Properties

Physical Form

Technical Details & Test Data

Typical Cured Information

Unless a different specification is given, the figures below were all determined by testing standard specimens made up by lap-jointing 4-in x 1-in x 0.06-in (10-cm x 2.5-cm x 1.5-mm) strips of aluminum.The joint area was 0.5 inch x 1 inch (12.5 mm x 2.5 cm) in each case. Samples were cured 7 d at 77°F (25°C) and values measured at 25°C.

Lap Shear Strength - Cure Effects

Cure Condition Lap Shear Strength Unit
Cure: 6 hours at 77°F (25°C) 2,560 (18) psi (MPa)
Cure: 24 hours at 77°F (25°C) 2,700 (19) psi (MPa)
Cure: 7 days at 77°F (25°C) 2,840 (20) psi (MPa)

 

 

Test Temperature (°F/°C)

Lap Shear Strength Unit
-76°F (-60°C) 2,280 (16) psi (MPa)
77°F (25°C) 2,840 (20) psi (MPa)
140°F (60°C) 1,140 (6) psi (MPa)
176°F (80°C) 330 (2) psi (MPa)

 

Lap Shear Strength After Exposure to 120°F (49°C) / 95% RH

Exposure Time Lap Shear Strength Unit
0 days 2,840 (20) psi (MPa)
30 days 3,410 (24) psi (MPa)
90 days 3,560 (25) psi (MPa)
120 days 3,130 (22) psi (MPa)

*Load applied 10 minutes after specimens reach test temperature.

Storage & Handling

Storage Conditions

Araldite® 1258 A/B Adhesive should be stored in a dry place, in the original sealed containers,at temperatures between 2°C and 40°C (36°F and 104°F). Under these storage conditions, the products have a shelf life of 3 years (from date of manufacture).The products should not be exposed to direct sunlight.If stored below 60°F, the adhesive should be brought to 60°F - 77°F and conditioned at this temperature for some time prior to use.