MIL-P-27418
Specifications
- Services & Capabilities
- Plating Specifications
- MIL-P-27418
Technical Notes
Scope
This specification covers the process and requirements for soft nickel plating.
Plating Thickness
Unless otherwise specified, the plating shall be 0.0020 inch +/- 0.0003 inch thick on all surfaces to be plated which can be touched by a ball of 1/16 inch in diameter.
Plating Hardness
Unless otherwise specified, the Knoop hardness of the plating after annealing shall not exceed 150 with a 500-gram load.
Number of articles in lot |
Number of articles in sample (randomly selected) |
Acceptance number (maximum number of sample articles nonconforming to any test) |
15 or less |
7 |
0 |
16 to 40 |
10 |
0 |
41 to 110 |
15 |
0 |
111 to 300 |
25 |
1 |
301 to 500 |
35 |
1 |
Ordering Data
Requisitions, contracts, and orders should be accompanied by drawings of the articles to be plated.
If possible, these documents should include the following
- Title, number, and date of this specification
- Instructions concerning the areas to be plated, deviations from the specified plating thickness, and any other necessary information pertinent to the plated surfaces.
- Instructions concerning the number of articles to be selected for the thickness test.
Ready to get started?
Talk to an industry expert about the best solution for your application.
Resources
AOTCO Acquires Modern Metal Finishing
Archeological Discovery Shows AOTCO’s History of Metal Plating
AOTCO Launches New Type I Chromic Acid Anodizing Line
Services & Capabilities

Electroplating
Electroplating
Electroplating is a process by which one metal is deposited onto a base metal (substrate). These deposited metals offer a variety of benefits including thermal and electrical conductivity, corrosion resistance and more. AOTCO electroplates a wide variety of both standard and exotic metals.
Learn More
Anodizing
Anodizing
Sometimes called a “conversion coating” Anodizing is an electrolytic process in which an oxide (anodic) layer is chemically built on the surface of the substrate material, providing anti-corrosion and other benefits. AOTCO offers, Type I, Type 2, Type 3 and Titanium anodizing services.
Learn More
Passivation
Passivation
Passivation is a term for a variety if processes that make a metal (most commonly stainless steel) or other substance unreactive, or passive, by altering the surface layer or coating the surface with a thin inert layer. AOTCO performs both citric and black oxide passivation techniques to a range of specifications.
Learn More
Plating Substrates
Plating Substrates
AOTCO plates on a wide variety of Common, Exotic and Non-Metallic substrates, bringing exceptional expertise to magnesium, titanium, beryllium, BeCu, TeCu, tungsten and more. In some cases we pass as high as 450 degrees celsius, allowing for high temperature soldering, brazing, or post machining operations after plating.
Learn More
Pre- & Post-Process Treatments
Pre- & Post-Process Treatments
Pre-Process: In addition to offering both mechanical & chemical cleaning options, AOTCO specializes in creating solutions for complicated, difficult and tight-tolerance masking challenges. Post-Process: For clients with specialized needs AOTCO offers laser marking and engraving options, including color change caused by chemical or molecular changes, charring, foaming, melting, ablation, and more.
Learn More
Dedicated Outsourced Finishing
Dedicated Outsourced Finishing
Part of our cornerstone goal of building long-term, collaborative & solution-oriented partnerships, AOTCO will devote reserved physical and human resource capacity for our clients with long-term finishing and deadline requirements. For these partnerships our commitment is that AOTCO manages the process, while YOU control the results.
Learn More