MIL-DTL-81706B-2004

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MIL-DTL-81706B

25 October 2004

SUPERSEDING

MIL-DTL-81706A

18 February 2002

DETAIL SPECIFICATION

CHEMICAL CONVERSION MATERIALS

FOR COATING ALUMINUM AND ALUMINUM ALLOYS

This specification is approved for use by all Departments and Agencies of the Department

of Defense.

1. SCOPE

1.1 Scope. This specification covers chemical conversion materials used in the formation

of coatings by the reaction of the material with the surfaces of aluminum and aluminum alloys.

1.2 Classification. The chemical conversion materials and application methods are of the

following types, classes, material forms, and methods.

1.2.1. Types. The chemical conversion materials are of the following types (see 6.2).

Type I – Compositions containing hexavalent chromium.

Type II – Compositions containing no hexavalent chromium.

1.2.2 Classes. The materials, which form protective coatings by chemical reaction with

aluminum and aluminum alloys, are of the following classes (see 6.2).

Class 1A - For maximum protection against corrosion, painted or unpainted.

Class 3 - For protection against corrosion where low electrical resistance is required.

Comments, suggestions, or questions on this document should be addressed to: Commander,

Naval Air Warfare Center Aircraft Division, Code 414100B120-1, Highway 547, Lakehurst,

NJ 08733-5100 or emailed to thomas.omara@navy.mil. Since contact information can

change, you may want to verify the currency of this address information using the ASSIST

Online database at www.dodssp.daps.mil.

AMSC N/A AREA MFFP

MIL-DTL-81706B

1.2.3 Material forms. Chemical conversion materials are of the following forms (see 6.2).

Form I – Concentrated liquid

Form II – Powder

Form III – Premixed liquid (ready for use touch-up brush application)

Form IV – Premixed liquid, thixotropic (ready for use)

Form V – Premeasured powder, thixotropic (ready for use after addition of water)

Form VI – Premixed liquid (ready for touch-up use in self-contained applicator device)

1.2.4 Application methods. Chemical conversion materials are of the following application

methods (see 6.2).

Method A – Spray

Method B – Brush-on or wipe-on

Method C – Immersion

Method D – Applicator pen or presaturated applicator device

1.3 Part or identifying number (PIN). PINs to be used for the chemical conversion materials

for coating aluminum and aluminum alloys acquired to this specification are created as follows:

M 81706 1 A 2 B

Application method (see 1.2.4): A – Spray

B – Brush

C – Immersion

D – Applicator

Material form (see 1.2.3): 1 – Form I Concentrated liquid

2 – Form II Powder

3 – Form III Premixed liquid

4 – Form IV Premixed liquid

5 – Form V Premeasured powder

6 – Form VI Premixed liquid

Class (see 1.2.2): A – Class 1A Maximum corrosion

protection

B – Class 3 Protection against corrosion

where low electrical resistance is required

Type (see 1.2.1): 1 – Type I Compositions with hexavalent

chromium

2 – Type II Compositions with no

hexavalent chromium

Specification number

M prefix

MIL-DTL-81706B

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3 and 4 of this

specification. This section does not include documents cited in other sections of this

specification or recommended for additional information or as examples. While every effort has

been made to ensure the completeness of this list, document users are cautioned that they must

meet all specified requirements documents cited in sections 3 and 4 of this specification, whether

or not they are listed.

2.2 Government documents.

2.2.1 Specifications and standards. The following specifications and standards form a part

of this document to the extent specified herein. Unless otherwise specified, the issues of these

documents are those cited in the solicitation or contract.

FEDERAL STANDARDS

FED-STD-141 - Paint, Varnish, Lacquer and Related Materials: Methods of

Inspection, Sampling and Testing

DEPARTMENT OF DEFENSE SPECIFICATIONS

MIL-PRF-23377 - Primer Coatings: Epoxy, High-Solids

MIL-PRF-85285 - Coating: Polyurethane, Aircraft and Support Equipment

MIL-PRF-85582 - Primer Coatings: Epoxy, Waterborne

(Copies of these documents are available online at http://assist.daps.dla.mil/quicksearch/ or

www.dodssp.daps.mil or from the Standardization Document Order Desk, 700 Robbins Avenue,

Building 4D, Philadelphia, PA 19111-5094.)

2.3 Non-Government publications. The following documents form a part of this document

to the extent specified herein. Unless otherwise specified, the issues of these documents are

those cited in the solicitation or contract.

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) INTERNATIONAL

ASTM-B117 - Salt Spray (Fog) Apparatus, Operating. (DoD adopted)

ASTM-D3359 - Adhesion by Tape Test, Measuring

(Copies of these documents are available from the ASTM International, 100 Barr Harbor

Drive, West Conshohocken, PA 19428-2959 or www.astm.org.)

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摘要：

MIL-DTL-81706B-2004是美国国防部发布的军用详细规范，替代了旧版MIL-C-81706，专门针对铝及铝合金基材上的化学转化膜（铬酸盐涂层）的性能与质量要求。该标准规定了用于提高耐腐蚀性、增强油漆附着力的转化涂层材料的化学组成、物理性能、测试方法及验收标准，适用于航空航天、国防装备及高可靠性工业领域。符合MIL-DTL-81706B的涂层工艺可为铝合金表面提供优异的防腐蚀保护，同时保持基材的导电性能。本规范对于采购、质量控制以及表面处理供应商的技术认证具有重要参考价值。

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