ARALDITE 5871

Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

ARALDITE 5871

Main features

  • Long Adhesive Open Time
  • High Shear and Peel Strength
  • Multi-Material Electrical-Insulation Bonding

Product Description

ARALDITE® 5871 A/B is a two-part, viscous epoxy adhesive for bonding metals, ceramics, wood, vulcanized rubber, foams, and plastics. The mixed adhesive is electrically insulating and can be applied manually or with meter/mix and coating equipment. A 100:100 resin-to-hardener ratio by volume and 120-minute pot life at 25°C provide a practical processing window for assembly. Published cure schedules range from room-temperature cure to accelerated heat cure, while tested aluminum joints reached typical lap shear values up to 30.4 MPa after a 150°C cure. The product cures without releasing volatile constituents.

Key features

  • Extended processing window: Typical pot life is 120 minutes at 25°C for a 4 fl. oz. mixed mass.
  • Strong shear and peel performance: Typical aluminum lap shear reaches up to 30.4 MPa, with roller peel of 4.9 N/mm under the stated test conditions.
  • Electrically insulating, multi-material bonding: Suitable for metals, ceramics, wood, vulcanized rubber, foams, and plastics, with a typical dielectric strength of 400 V/mil.

Applications / Suitable for

  • Metal bonding
  • Ceramic and wood bonding
  • Vulcanized rubber, foam, and plastic bonding
  • Electrically insulating bonded assemblies
Product Family

ARALDITE 5871

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Color
The color
Off-White
Pot Life
Pot life is the amount of time it takes for the viscosity of a material to double (or quadruple for lower viscosity materials) in room temperature after a material is mixed. It is closely related to work life but it is not application dependent, less precise and more of a general indication of how fast a system is going to cure.
120 minutes
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.05
Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
45000 mPa.s
Viscosity (Part A)
50000 mPa.s
Viscosity (Part B)
35000 mPa.s

Additional Information

Technical properties

As-supplied / before-processing properties

Typical component and mixed-material values. Preserve the stated temperature, mass, and component basis when comparing or specifying processing conditions.

Property Value Unit Method / condition
Appearance Resin: off-white viscous liquid; Hardener: amber liquid — Visual; typical values at 25°C
Specific gravity Resin: 1.17; Hardener: 0.92 — ASTM D-792; typical values at 25°C
Component viscosity Resin: 50,000; Hardener: 35,000 cP ASTM D-2393 at 25°C
Mix ratio by weight 100:80 Resin:Hardener Supplier reaction ratio
Mix ratio by volume 100:100 Resin:Hardener Supplier reaction ratio
Mixed viscosity 45,000 cP ASTM D-2393 at 25°C
Pot life 120 min ASTM D-2471 at 25°C; 4 fl. oz. mixed mass
Technical properties

After-processing / final-state properties

Typical cured-material and bonded-joint data. Values are laboratory results under the stated methods and conditions, not guaranteed design allowables.

Property Value Unit Method / condition
Lap shear strength 30.4 MPa ASTM D-1002; aluminum; 10–20 min cure at 150°C; tested at 25°C
Roller peel 4.9 N/mm ISO 4578; tested at 25°C
Ultimate tensile strength 33 MPa ASTM D-638; tested at 25°C
Elongation 9 % ASTM D-638; tested at 25°C
Glass transition temperature, Tg 63 °C DMA; ASTM D-4065
Hardness 80 Shore D ASTM D-2240
Thermal conductivity 0.22 W/m·K ISO 8894/90
Dielectric strength 400 V/mil Typical electrical property

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