ASTM-D6412 Standard Specification For Epoxy (Flexible) Adhesive For Bonding Metallic And Nonmetallic Materials

ASTM-D6412 - 1999 R12 EDITION - CURRENT
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The specification covers a two-part modified epoxy paste adhesive for bonding metallic and nonmetallic materials. The adhesive should be suitable for forming bonds that can withstand environmental exposure to a certain temperature range when exposed to an expected combination of stress, temperature, and relative humidity to be encountered in service. Two types of adhesive shall be classified according to composition. Type I which consists of two-part kits of liquid base and modified amide liquid accelerator. Type I is further subdivided into two grades: Grade 1 with low viscosity and Grade 2 with high viscosity. The other classification is Type II which consists of premixed, frozen, Type I, Grade 1 or Type I, Grade 2. Different tests shall be conducted in order to determine the following mechanical properties of the adhesives: room-temperature shear, high-temperature shear, low-temperature shear, room-temperature Shore D hardness, room-temperature T-peel, and outgassing characteristics such as total mass loss and vacuum condensable material.

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Scope

1.1 The specification covers a two-part modified epoxy paste adhesive for bonding metallic and nonmetallic materials. The adhesive should be suitable for forming bonds that can withstand environmental exposure to temperatures from –184 to 82 °C (–300 to 180 °F) when exposed to an expected combination of stress, temperature, and relative humidity to be encountered in service.

Note 1When coordinated through the Department of Defense (DoD) and the National Aeronautics and Space Administration (NASA), this practice will be a direct replacement of MIL-A-82720 (OS), MIS-26872, and MSFC-SPEC-2037.

1.2 The values stated in SI units or inch-pound units are to be regarded separately as standard. Within the text, the inch-pound units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.

1.3 The following precautionary statement pertains to the test method portion only, Section 8, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

ICS Number Code 49.025.50 (Adhesives)

To find similar documents by ASTM Volume:

15.06 (Adhesives)

To find similar documents by classification:

49.025.50 (Adhesives)

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Document Number

ASTM-D6412/D6412M-99(2012)

Revision Level

1999 R12 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

Oct. 1, 2012

Document Type

Specification

Page Count

4 pages

Committee Number

D14.80