MaTestLab > Test Standards > ASTM D635 Rate of Burning and Extent and/or Time of Burning of Plastics in a Horizontal Position
Last updated 19th October 2024
ASTM D635 Rate of Burning and Extent and/or Time of Burning of Plastics in a Horizontal Position
ASTM D635 is a test method used to determine the rate of burning, extent, and time of burning of plastics when tested in a horizontal position. The test is used to evaluate the burning characteristics of materials and is often used in quality control and specification purposes.
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ASTM D635 Introduction
ASTM D635 is a standard test method designed to evaluate the rate of burning, extent, and time of burning of plastics when tested in a horizontal position. The method involves measuring the burning rate and time of ignition of a test specimen when subjected to a flame from a Bunsen burner. The results obtained through this method are used for evaluating the fire hazard and fire resistance properties of plastic materials along with the quality control, reliability check, performance evaluation, and specification purposes.
ASTM D635 Test Method
The test method ASTM D635 involves placing the test specimen on a horizontal surface and exposing it to a Bunsen burner flame. The Bunsen burner is adjusted to provide a blue flame. The procedure can be divided into the following steps:
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Conditioning and igniting the Specimen
The specimen is conditioned to a standard temperature and humidity for a specified period of time before testing. The specimen is ignited at one end using the Bunsen burner flame, and the time taken for the flame to ignite the specimen is recorded.
Recording burning rate
The distance between the leading and trailing edges of the flame is measured at specific intervals, and the burning rate is calculated. The extent of burning is measured as the length of the specimen that has been consumed by the flame, and the time of burning is recorded as the time taken for the flame to burn the entire length of the specimen.
ASTM D635 Equipment and Sample Preparation
Specimen details
ASTM D635 test specimens are flat, rectangular shaped plastics.
Specimen dimensions
The acceptable specimen thickness for ASTM D635 is between 0.8 to 3.2 mm. The minimum width and length of the specimen is 76 mm and the maximum length is 305 mm.
Specimen preparation
The specimen should be cut from the sample material and conditioned for a minimum of 40 hours at a temperature of 23 ± 2°C and a relative humidity of 50 ± 5%. The edges of the specimen should be free from roughness, nicks, or other imperfections that could affect the test results.
ASTM D635 Results and Interpretation
The results obtained through the ASTM D635 test method include the burning rate, extent, and time of burning of the plastic material. The test is used to evaluate the fire hazard and fire resistance properties of plastic materials and is often used in quality control and specification purposes.
Tests related to ASTM D635
Other ASTM test methods related to the evaluation of fire hazard and fire resistance properties of plastics include ASTM D2863 Standard Test Method for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of Plastics and ASTM E1354 Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter.
Use of ASTM D635 in Various Industries
The standard is widely applied in different sectors, such as automotive and construction, aerospace, and electronics, where the flammability of plastics must be determined.
Materials Commonly Tested with ASTM D635
This standard tests the fire resistance of mostly-used plastics in construction, automotive parts, and consumer electronics like PVC, PE, PP, and acrylics. It is important to gain knowledge about how this material behaves, the safety potentiality, and thus reduces possible risks in practical life conditions.
Common Challenges and Troubleshooting in ASTM D635 Testing
Several variables cause problems in testing, such as inconsistent flame application, variations in material thickness, and variability in environmental conditions that do not meet standards. To achieve reliable results, these variables need to be controlled with precision. In this sense, troubleshooting adjustments to protocols, recalibration of equipment, as well as uniform handling of specimens all contribute to the outcome.
Safety and Best Practices in ASTM D635 Testing
This standard testing requires safety for the test since it involves open flames and flammable materials. Good practices: use of well-ventilated places, fire suppression equipment, protective gear, and adherence to flame application and handling of the material guidelines. These will also help reduce accidents and ensure the validity of the results obtained.
Importance of ASTM D635
This standard forms an important aspect of flammable industries relating to material safety. This method, which the standard provides for evaluating the plastic flammability, helps manufacturers in safer design ways that are conducive to consumer safety and aid long-lasting products in environments prone to fire.
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Where can I get the astm d635 tested?
You can share your astm d635 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm d635 test to various testing techniques.
How much do I need to pay for the astm d635 test?
Please contact us for a detailed quote for your astm d635 testing needs. Cost incurred to carry out different astm d635 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
How many samples are required for astm d635?
The required number of samples or specimens should comply with the procedure given in the astm d635 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
How much discount can I get on the astm d635 test?
MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.
How many days will it take to complete the astm d635 test?
The turnaround time for astm d635 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
Where can I get the astm d635 tested?
You can share your astm d635 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm d635 test to various testing techniques.
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