MIL-STD High Temperature 501 Testing

MIL-810 high temperature testing evaluates materials in high temperature conditions. As a MIL-STD-810 certified lab, Keystone Compliance realizes the importance of standard 810 testing. Meeting the MIL-810 high temperature requirements can be difficult. We understand the challenges and guide companies through the process.

Keystone Compliance partners with customers to achieve MIL-STD-810 product compliance. When products do not meet the requirements, we assist with finding solutions. Our accurate test reports are delivered quickly. Keystone takes a consultative approach throughout the entire test program. Keystone provides the peace of mind that all of your needs will be met.

Request a quote and find out first hand about our competitive pricing, timely process, and outstanding reputation. Have a question about MIL-STD high temperature testing? Contact us or call at (724) 657-9940 and we will determine the best course of action.

The Importance of MIL High Temperature Compliance Testing

Method 501 assesses effects of high temperature conditions on material safety, integrity and performance. An example includes materials likely to be deployed in areas where temperatures are higher than standard ambient.

The use of this high temperature lab testing method is to gauge the effects of short-term distributions of heat. This standard military test is not used to evaluate aging and declining effects.

These effects occur during continuous long-term exposure to high temperatures where synergetic effects may be involved. High temperature testing is also not practical for evaluating actinic effects. As well as effects from aerodynamic heating.

How High Temperature Method 501 Affects Products

When choosing test method 501, high temperature test, the needed documents to apply the tailoring process are first reviewed. This will help determine where high temperatures are foreseen in the life cycle of the material. Conducting method 505 with other military testing methods is preferable. This is used to get a maximum response and temperatures for items exposed to direct solar radiation.

When using the 810-test, high temperatures may temporarily or permanently reduce the performance of a material by changing the composition of its physical properties or dimensions. Consider the following problems from high temperature exposure that may relate to material being tested. This list is not all-inclusive.

  • Parts bind from differential expansion of dissimilar materials.
  • Lubricants become less viscous.
  • Joints lose lubrication by outward flow of lubricants.
  • Materials change in dimension, either totally or selectively.
  • Packing, gaskets, seals, bearings and shafts become distorted, bind and fail causing integrity failure.
  • Gaskets display permanent sets.

Information on High Temperature Test Method 501

One approach related to the MIL-STD-810 High Temperature test is to apply the least damaging environments first. Another approach is to apply environments to maximize the likelihood of combined effects

This MIL-STD 810 lab test is used with the shock and vibration tests to evaluate events such as shipping, handling, and shock on hot materials. Also, this MIL-810 test may contribute significantly to the results of low pressure testing of seals.

When selecting procedures, consider these notes:

  1. The operational purpose of the material.
  2. The natural exposure circumstances (ambient or induced).
  3. Whether the purpose of the material has been met.
  4. procedure sequence.
  5. Other significant adjacent heat sources that could affect the material.
  6. Combining procedures I and II may produce better test results.

Basic Hot can be found in many parts of the world. This extends outward from the southwestern United States, northwestern Mexico, central and western Australia, Saharan Africa, South America, Southern Spain, and southwest and south central Asia with temperatures ranging from 86 to 145 degrees fahrenheit.

Hot Dry climates can be found in southwest and south central Asia, southwestern United States, Saharan Africa, central and western Australia, and northwestern Mexico. These temperatures range from 90 to 165 degrees fahrenheit.

Procedures Within the MIL-STD-810 Standard

All three MIL-STD 810 test procedures involve environmental conditioning and performance testing. However, the military standard tests differ based on temperature load prior to and during performance tests. First, the storage procedure assesses high temperature storage effects on following material performance.

The operation procedure assesses the effects of high temperatures during performance. Lastly, the tactical-standby evaluates the ability of the material that has soaked in the sun in a high temperature setting to become operational in a relatively short period of time.

High temperature testing is based on the average temperature of the air envelope surrounding the item. However, localized heating can occur. This is because of specialized heating conditions. This type of heating can be above the average surrounding air. Therefore, it can seriously affect the evaluation of the material’s thermal test.

Procedure I, storage, determines the actual level of heating of the test material caused by solar loading. For example, integrity of materials, and safety/performance of the material. For material inside an enclosure exposed to solar heating, consider using method 505.

Procedure II, operation, is used to examine how high ambient temperatures may affect material performance while operating. The two ways to perform procedure II are as follows. (1) Expose the test item to cyclic chamber conditions. The test item must operate either continuously or during the period of maximum response. (2) Expose the test item to a constant temperature and operate the test item when temperature stabilizes.

Procedure III, Tactical-Standby to Operational, is not a substitute for solar radiation, method 505. This MIL-STD-810 test evaluates the material’s performance at the operating temperatures after being pre-soaked at non-operational temperatures. These are not items in storage or transit but rather ready-to-go as needed.

Keystone Compliance Provides Altitude Testing Services

Keystone Compliance is one of the best MIL-STD 810 Compliance labs in the country. We employ expert MIL STD test engineers and properly equip our laboratory in order to provide military testing lab certifications for various industries and the United States armed forces.

In addition to MIL-STD-810 – testing, Keystone has a full scope of expertise including solar radiation, humidity, freeze-thaw, and fungus

Contact us to learn why so many manufacturers rely on Keystone Compliance to meet their MIL-810 standard compliance and shock testing needs.