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Military Specifications Guide.

Your comprehensive reference for MIL-SPEC metal finishing standards. From anodizing to plating, chemical conversion to coatings—understand the specifications that define aerospace and defense quality.
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Understanding Military Specifications

Military specifications (MIL-SPEC) define the technical requirements for materials, products, and processes used in defense and aerospace applications. These standards ensure consistent quality, performance, and reliability across all certified suppliers.

At Aerospace Metals, our certified partner network includes facilities qualified to process components per the most demanding military and aerospace specifications. We provide full documentation and traceability for all MIL-SPEC work.

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Full Documentation

Anodizing Specifications .

MIL-A-8625 and related specifications for anodic coatings on aluminum and aluminum alloys.

Anodic Coatings for Aluminum

MIL-A-8625
  • Type I - Chromic Acid
  • Type II - Sulfuric Acid
  • Type III - Hardcoat

Hard Anodic Coating

AMS 2469
  • Type III Class 1 & 2

Anodic Coating - Chromic Acid

AMS 2470
  • Type I Process

Anodic Coating - Sulfuric Acid

AMS 2471
  • Type II Class 1 & 2

Plating Specifications.

Electroplating specifications for cadmium, zinc, nickel, chrome, and other metallic coatings.

Cadmium Plating

QQ-P-416

  • Type I, II, III
  • Classes 1, 2, 3

Zinc Plating on Iron and Steel

ASTM B633

  • Type I-IV
  • Classes Fe/Zn

Electroless Nickel Plating

MIL-C-26074

  • Class 1, 2, 3, 4

Electroless Nickel Plating

AMS 2404

  • Low Phosphorus

Nickel Plating

QQ-N-290

  • Class 1, 2

Chrome Plating - Hard

QQ-C-320

  • Class 1, 2, 2a

Chrome Plating - Surface Prep

MIL-DTL-5002

  • Type I, II

Chemical Conversion & Passivation.

Specifications for chromate conversion coatings, passivation treatments, and phosphate coatings.

Chemical Conversion Coatings (Alodine)

MIL-DTL-5541

  • Class 1A, 3

Chemical Conversion Materials

MIL-DTL-81706

  • Class 1A, 3

Passivation of Stainless Steel

ASTM A967

  • Nitric Acid, Citric Acid

Passivation Treatments

AMS 2700

  • Method 1, 2, 3, 4

Phosphate Coating - Heavy

MIL-DTL-16232

  • Type M, Z

Primers & Specialty Coatings .

Military specifications for primers, polyurethane coatings, and dry film lubricants.

Primer - Epoxy

MIL-PRF-23377

  • Type I, II

Polyurethane Coating

MIL-PRF-85285

  • Type I

Dry Film Lubricant

AMS-C-27725

  • Type I, II
Free Download

Complete Plating Specifications Guide

Get our comprehensive PDF reference guide with complete MIL-SPEC plating and finishing specifications. Perfect for engineers, procurement specialists, and quality teams.

  • Complete anodizing, plating, and coating specs
  • Thickness tolerances and class designations
  • Material compatibility guidelines
  • Process selection recommendations
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