MIL-STD-810B is a military test standard for environmental testing. The standard was adopted on June 23, 1964. This version superseded MIL-STD-810, which was enacted on June 14, 1962. The title of the standard is Military Standard Environmental Test Methods for Aerospace and Ground Equipment.
What is the Purpose of MIL STD 810B?
Military standard 810B establishes uniform environmental test methods. These methods determine the resistance of equipment to the effects of natural and induced environments. The environments are common to military operations. The MIL-810 test methods contained within this environmental test standard outline specific environmental conditions.
These conditions must be recreated by a MIL-STD-810 testing lab. The objective is that the recreation occurs and the product continues to operate in a satisfactory manner even after being exposed to these conditions. When that occurs, there is a high degree of confidence that the item could survive the field environment during its expected service life.
The tests described within the MIL-810-B test standard are not to be interpreted as an exact and conclusive representation of actual service operation.
How is the MIL-STD-810B Test Standard Organized?
The military standard lab test contains 18 test methods. These laboratory test methods apply broadly to all items of aerospace and ground equipment. The exceptions are air frames and primary power plants. The test methods generally represent the extreme conditions which usually constitute the minimum acceptable conditions.
The environmental 810 testing standard states that when it is known that the equipment will encounter conditions more severe or less severe than the environmental levels stated, the testing may be modified by the individual equipment specifications.
What are the Testing Laboratory Requirements of the MIL STD-810 Test Chambers?
Temperature testing is a major component of MIL STD-810-B testing. Of the 18 different test methods included in the standard, five of them involve temperature and humidity. These test methods include testing for high temperature, low temperature, temperature shock, temperature & altitude and humidity.
To ensure accuracy and consistency, the MIL STD-810 test spec states specific requirements. One requirement involves defining the volume of the test chamber. The volume of the test chamber is such that the bulk of the item under test will not interfere with the generation and maintenance of test conditions.
An additional STD-810 defined topic is the location of temperature sensors. Unless otherwise specified, thermocouples or equivalent temperature sensors utilized to determine or control the specified chamber temperature are centrally located within the test chamber. This is a best efforts requirement. They are ideally located in the return air stream or otherwise protected against direct impingement of supply air and radiation effects.
Another MIL STD defined topic is the heat source. The heat source must be located so that radiant heat will not fall directly on the test item. There is one exception. This exception is when application of radiant heat is one of the test conditions.
What is the Test Sequence of Military 810B Lab Testing?
The selection of environmental test methods is based on a consideration of the environments which the equipment will experience. When more than one method has been selected, a sequence of testing should be specified. The test standard provides advisory information on the applicability of the various test methods and recommended test sequences.
Are There Tolerances of MIL STD Test Conditions?
MIL-STD-810 B permits the following tolerances of test conditions. These tolerances are exclusive of the accuracy of instruments. Temperatures can be plus or minus two degrees Celsius or 3.6 degrees Fahrenheit.
Vibration amplitude has acceptable tolerances as well. For sinusoidal vibration, the tolerance is plus or minus 10 percent. For random vibration, the tolerance is plus or minus 30 percent. In acceleration testing, the acceptable tolerance is plus or minus 10 percent.
Relative humidity can be plus 5 percent relative humidity and minus zero percent. Atmospheric pressure can be plus or minus 5 percent or 0.06 inches of mercury, whichever provides the greatest accuracy. If measured by devices such as ion gauges the tolerance is plus or minus 10 percent.
Expert MIL-STD-810B Compliance Testing Laboratory
Keystone Compliance is a leader in the testing of military and aerospace products. Our scope of accreditation includes all versions of MIL-STD-810. This document covers MIL-STD-810B. For more information about the other versions of this military standard, please click on one of the links below:
- MIL-STD 810 A
- MIL-STD 810 B
- MIL-STD 810 C
- MIL-STD 810 D
- MIL-STD 810 E
- MIL-STD 810 F
- MIL-STD 810 G
- MIL-STD 810 H
As an ISO-17025 accredited test lab, Keystone Compliance is accredited to complete a full MIL-STD-810B test program. Our test facility includes nearly 10 EMC test chambers, several shakers, dozens of climatics chambers and other necessary equipment.
We take a consultative approach and assist our customers throughout the entire test program. If failures arise, we assist in isolating them and finding potential solutions. Contact us to see why so many manufacturers partner with Keystone Compliance.
In addition to environmental testing, Keystone Compliance also has a full scope of EMC/EMI lab testing. Please visit our EMC website to learn more about our capabilities including shielding effectiveness, ESD, lightning, HEMP and many other types of EMC testing. We are also an ISTA-accredited package testing lab. We offer full package testing capabilities including testing to ISTA and ASTM standards.
The MIL-STD-810 test specification includes the following test methods and sections. For more information on each type of testing, please click on the associated links.
- MIL-STD 810 Method 500 Low Pressure Testing
- MIL-STD High Temperature 501 Testing
- MIL-810 Standard Method 502 Low Temperature Testing
- MIL-STD Temperature Shock Method 503 Testing
- MIL-STD-810 Method 504 Contamination by Fluids Testing
- MIL-STD-810 Solar Radiation Method 505
- MIL-STD Test Method 506 Rain Testing
- MIL-STD Humidity Testing Method 507
- MIL-STD-810 Fungus 508 Testing
- MIL-STD-810 Salt Fog Method 509
- MIL-STD Sand and Dust Testing Method 510
- MIL-STD 810 Explosive Atmosphere Method 511 Testing
- MIL-STD-810 Standard Immersion M12 Testing
- MIL-STD-810 Acceleration Method 513
- Test Method 514 Vibration Testing
- MIL-STD Test Method 515 Acoustic Noise Testing
- MIL-STD 810 Test Method 516 Shock Testing
- MIL-STD-810 Pyroshock Test Method 517
- MIL-STD-810 Acidic Atmosphere Method 518 Testing
- MIL-STD-810 Test Method 519 Gunfire Shock Testing
- MIL-STD-810 Combined Conditions 520 Testing
- MIL-STD-810 Icing/Freezing Rain Testing Method 521
- MIL 810 Test Method 522 Ballistic Shock Testing
- MIL-STD Method 524 Freeze/Thaw Lab Testing
- Test Method 525 Time Waveform Replication Testing
- Test Method 527 Multi-Exciter Testing
- MIL-STD 810 Testing Mechanical Vibrations of Shipboard Equipment