Last updated 25th April 2024

ASTM D1646 Standard Test Methods for Rubber Viscosity, Stress Relaxation, and Pre-Vulcanization Characteristics

The processes for determining a property known as Mooney viscosity are covered by ASTM D1646. The shearing torque that prevents a cylindrical metal disk encased in rubber inside a cylindrical chamber from rotating is known as Mooney viscosity. ASTM D1646 outlines the dimensions of the shearing disk viscometer, test temperatures, and processes for calculating Mooney viscosity. Depending on the rubber being tested and the test temperature, the torque or stress on the rotor reduces at a different pace when the disk rotation is abruptly stopped. ASTM D1646 outlines a test procedure for assessing stress relaxation.

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    Introduction to ASTM D1646

    The ASTM D1646 determination of viscosity values is contingent upon the molecular structure, molecular weight, and potential presence of non-rubber elements. Rubber exhibits a stress relaxation characteristic that combines an elastic and viscous reaction. MaTestLab is one of the best testing service providers, with the best network of testing laboratories in the USA to carry out ASTM D1646 tests for our clients. Using the Mooney viscometer, the beginning of vulcanization can be identified by a rise in viscosity. This test technique is useful for determining vulcanization, stress relaxation behavior, and viscosity. 

    ASTM D1646 Tests Method

    Rotor adjustmentThe closed dies are adjusted with the rotor in place to measure temperature.
    Torque indicationThe torque indicator is adjusted to zero while the viscometer is working.
    Viscosity MeasurementThe viscosity is measured by using the Mooney viscometer.

    ASTM D1646 Test Specimens

    Specimen DetailRubber is used as a test specimen for ASTM D1646
    Specimen SizeTwo test pieces of the substance under test, each with a combined volume of 2563 cm3, will make up the test specimen. 

    ASTM D1646 Test Result

    A rise in viscosity can be used to determine the start of vulcanization using the Mooney viscometer. ASTM D1646 can be used to measure viscosity, stress relaxation behavior, and vulcanization. 

    ASTM D1646 Related Tests

    ASTM D1646 is related to tests including ASTM D1349 for rubber testing, ASTM D1418 for rubber nomenclature, and ASTM D3896 for rubber sampling.

    FAQ's

    Where can I get the astm d1646 tested?

    You can share your astm d1646 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 d1646 test to various testing techniques.

    How much do I need to pay for the astm d1646 test?

    Please contact us for a detailed quote for your astm d1646 testing needs. Cost incurred to carry out different astm d1646 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 d1646?

    The required number of samples or specimens should comply with the procedure given in the astm d1646 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 d1646 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 d1646 test?

    The turnaround time for astm d1646 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 d1646 tested?

    You can share your astm d1646 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 d1646 test to various testing techniques.

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