Last updated 24th April 2024

ASTM E794 Standard Test Method for Melting and Crystallization Temperatures by Thermal Analysis

ASTM E794 uses differential scanning calorimetry and differential thermal analysis to determine the melting temperatures of pure materials examination. Thermally stable materials with well-defined melting temperatures can be tested using ASTM E794 in most cases. For DSC, the typical operating range is -120 to 600°C, while for DTA, it is 25 to 1500°C. The instrumentation being utilized will determine how far the temperature range may be stretched.

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    Introduction to ASTM E794

    Temperatures at which crystalline materials fuse and crystallize can be quickly determined using differential scanning calorimetry and differential thermal analysis.  MaTestLab is one of the best testing service providers, with the best network of testing laboratories in the USA to carry out ASTM E794 tests for our clients. This test is helpful for research, specification acceptance, and quality control. 

    ASTM E794 Test Method

    Heating the SpecimenA test specimen must be heated across the fusion area in a controlled setting according to ASTM E794. 
    Recording the difference in heat flow or temperatureThe difference in temperature (for DTA) or heat flow (for DSC) caused by energy variations between the test and reference materials is continuously measured and recorded. An endothermic peak appears in the heating curve as a result of the specimen’s absorption of energy, which initiates a transition.

    ASTM E794 Test Specimens

    Specimen DetailASTM E794 applies to pure materials which are thermally stable.
    Specimen SizeThe size of the change in enthalpy and the capsule volume dictates the mass of the specimen to be used. Use encapsulation and a similar mass (65%) when comparing numerous findings. Weigh 1 to 15 mg of material into a dry, clean specimen capsule with a precision of 0.01 mg.

    ASTM E794 Test Result

    In summary, using both Differential Thermal Analysis (DTA) and Differential Scanning Calorimetry (DSC) methodologies, this test method offers a thorough method for figuring out the melting (and crystallization) temperatures of pure materials. Precise temperature data can be obtained by exposing materials to controlled cycles of heating and cooling and by observing the related thermal transitions, such as melting and crystallization. This technique provides a trustworthy way to describe a material’s thermal behavior, making it easier to identify, evaluate, and comprehend the material’s physical characteristics.

    Tests Related to ASTM E794

    ASTM E794 is related to tests including ASTM E473 for thermal analysis-related terms, ASTM E793 for measuring heat of fusion by calorimetry, and ASTM E1142 for thermophysical properties-related terms.

    FAQ's

    Where can I get the astm e794 tested?

    You can share your astm e794 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 e794 test to various testing techniques.

    How much do I need to pay for the astm e794 test?

    Please contact us for a detailed quote for your astm e794 testing needs. Cost incurred to carry out different astm e794 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 e794?

    The required number of samples or specimens should comply with the procedure given in the astm e794 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 e794 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 e794 test?

    The turnaround time for astm e794 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 e794 tested?

    You can share your astm e794 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 e794 test to various testing techniques.

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