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How to Choose Materials That Comply With Military Specifications

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Military transport helicopter

Military products are used in some of the most demanding conditions in the world including marine, desert, and arctic environments. Manufacturers and supply chain partners for the defense industry must design their products to meet stringent specifications for quality and performance. In addition to ruggedized equipment, there is also a need for item-level serialization and uniform tracking standards for certain product categories.

Materials of construction must be chosen for a product, packaging, and markings that accompany the items. We’ll discuss each of these components and review some of the important military standards that define the performance characteristics. This will provide a high-level overview of the thought process for material selection and how to design finished goods that are compliant for use in military applications.

Review of Military Specifications

Military transport helicopter

The U.S. Defense Standards, also referred to as MIL-STD or MIL-SPEC, is a series of standardized specifications that describe how the military controls its assets. These specifications are applicable to the entire military supply chain including suppliers, partners, and logistics providers. Additional military-specific information regarding material selection can be found in the U.S. Military Performance Specifications, known as MIL-PRF.

When choosing materials for an application, it can also be helpful to consult other industry standards such as the IP Code from the International Electrotechnical Commission (IEC), the American National Standards Institute (ANSI) standards, and the National Institute of Standards and Technology (NIST) standards. Many product builds can be complex and have several compliance requirements based on the intended end-use, location of deployment, and design characteristics.

  • MIL-PRF-5425E: Performance Specification for Acrylic Heat Resistant Plastic Sheet. This specification is an example of material properties that are defined by federal mandates. The document refers to unprocessed sheets of heat-resistant acrylic and explains the quality, optical quality, and heat-resistance that is expected when used in military applications.
  • MIL-STD-130: Identification Marking of U.S. Military Property. The markings that are used to identify and track military assets must also conform to regulatory requirements. This standard defines important performance characteristics of asset tags including acceptable barcode symbologies, materials of construction, and application methods. You will also find information related to the military Item Unique Identifier (IUID) program for tracking controlled assets.
  • MIL-STD-290: Packaging and Marking of Petroleum and Related Products. This specification pertains only to petroleum and related assets and identifies the packaging, markings, and approved methods for tracking these items. It’s an important reminder to search for specific categories of products to ensure that material selection is not impacted by a particular specification.
  • MIL-STD-810: Environmental Engineering Considerations and Laboratory Tests. Many products intended for military use are designed to achieve MIL-SPEC criteria that are outlined in this test standard document. Included in this test method standard are design considerations to manage environmental effects and the expected durability of various materials when used in particular situations. There are 24 laboratory test method categories covered in MIL-STD-810 including specific procedures and testing protocols.
  • MIL-STD-2073-1: DoD Standard Practice for Military Packaging. Choosing proper materials for packaging a product is just as important as the item itself. This specification explains the definition of military packaging and how manufacturers and partners should pack products to protect against environmental factors such as corrosion. Additional topics discussed include handling requirements, storage considerations, and transportation needs.

This was just a selection of the many military standards, so it’s important to conduct a thorough search of all applicable requirements. It’s often best to seek help from qualified professionals who are experts in material selection and suitability for particular applications.

Review of Application Requirements

Military tank turret

To choose proper materials for a military application, the first step is to define the expected performance characteristics. These qualities, combined with a thorough knowledge of military specifications, are necessary to ensure the material can be used effectively. An improper selection can reduce the quality of the overall product and lead to safety or performance issues.

Form Factor

The form factor of the product, packaging, or label will determine if your material can be rigid or flexible. Certain types of plastic and metal can be machined in unique shapes or with a thin width for flexible attachment to a surface.

Environmental Conditions

Materials may be exposed to weather conditions, extreme temperatures, or harsh chemicals during use. Understanding the expected environmental exposure from a military application will help you select a material that is compatible with the intended application.

Material Characteristics

Choosing between a plastic or metal material is often a matter of cost, durability, weight, and compatibility with other components. Some military applications may also require a high level of security, such as the attachment of permanent asset tags. When selecting materials for labels, choose a material that can withstand harsh environmental conditions while remaining readable throughout the lifespan of the asset, such as Metalphoto® anodized aluminum. Due to its applicability for extreme environmental conditions and outdoor exposure, Metalphoto is recognized by the National Association of Graphic and Product Identification Manufacturers (GPI) Industry Standards and Practices Manual as the most durable printed aluminum substrate available. It was also found to have outstanding durability and versatility for permanent asset identification and tracking in tests conducted by the U.S. Navy.

Finishing and Production

When finalizing a material selection for military applications, you should also review the intended production volume for the part, label, or packaging. This may impact the overall cost of your project. You may also select various finishing options, such as a gloss or matte look for certain metals. Some materials, such as aluminum, can be coated to create an extra layer of protection.

Selecting materials for military applications can be done by reviewing military specifications and defining the required performance characteristics. In some cases, multiple materials may be suitable, and you should select an option that works best for your overall product design and budget. A trusted supplier can help you determine the best material for a certain application and overcome some of the challenges encountered during the design process.

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