Last updated 1st May 2024

ASTM A721 Standard Test Method for Ductility of Oriented Electrical Steel

The ASTM A721 standard test technique determines the flexibility of grain-oriented silicon steel. The ductility class rating is determined by bending a test specimen at an approximate angle of 160°. Counting the number of breaks or fractures along the bend provides this information. ASTM A721 includes certain equipment specifications, specimen preparation, and inspection standards to guarantee adherence to industry norms and precisely evaluate the ductility of the material.

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    Introduction to ASTM A721

    To evaluate the ductility of grain-oriented silicon steel—a crucial property for determining material qualities in electrical applications—ASTM A721 is a standard test technique. In this test procedure, a specimen is bent across an angle of about 160°. The standard offers comprehensive guidance on specimen preparation, machine requirements, and testing processes to enable correct ductility assessment. MaTestLab is one of the best testing service providers, with the best network of testing laboratories in the USA to carry out ASTM A721 tests for our clients. Manufacturers and researchers can accurately determine the ductility of grain-oriented steel in compliance by using ASTM A721, especially for commercial thicknesses and widths up to 36 inches.

    Test Methods for ASTM A721

    The test proceeds as follows:

    Apparatus SetupA hand folder or apron brake with a breadth of at least 36 inches, a tinner’s brake, and an opening capacity of at least 0.035 inches.
    MethodologyUsing a hand folder, an apron brake device, and a tinner’s brake, the test specimen, representing the whole width of grain-oriented steel, is bent at an angle of approximately 160°. The ductility class rating is based on the number of fractures or breaks along the bend.number

    ASTM A721 Test Specimens

    Specimen DetailsUsually, two specimens are used, both of which are collected from the same site as the magnetic materials.
    Specimen PreparationThe specimens should be cut transversely to the rolling direction.
    Specimen DimensionsAt least 3 inches in the direction of rolling.

    ASTM A721 Test Results

    ASTM A721 guarantees consistent magnetic characteristics in electrical applications. Thorough inspection streamlines production procedures ensures quality control, and finds any errors. It allows for a comprehensive inspection without causing damage, which makes it easier to maintain strict quality standards and dependable operation in transformers and electric motors.

    Tests Related to ASTM A721ASTM A721 is an ASTM standard similar to ASTM A683, which specifies the criteria for semi-processed, non-oriented electrical steels.

    FAQ's

    Where can I get the astm a721 tested?

    You can share your astm a721 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 a721 test to various testing techniques.

    How much do I need to pay for the astm a721 test?

    Please contact us for a detailed quote for your astm a721 testing needs. Cost incurred to carry out different astm a721 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 a721?

    The required number of samples or specimens should comply with the procedure given in the astm a721 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 a721 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 a721 test?

    The turnaround time for astm a721 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 a721 tested?

    You can share your astm a721 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 a721 test to various testing techniques.

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