HARDNESS TESTING

HARDNESS TESTING
HT

Material Hardness Testing measures a material’s strength by determining resistance to penetration. The hardness test is extremely useful in material selection because it provides a hardness value which indicates how easily a material can be machined and how well it will wear. Hardness testing of metals is also valuable in making decisions about treatments and coatings. Hardness Testing is generally performed using test machines equipped with an indenter that is forced into the test material over a certain amount of time. The shape of the indentor varies by type of hardness test and includes cone, ball and pyramid shapes. Each test machine also uses a different force or load application system and records an indentation hardness value in kilograms-force according to their individual hardness scales.

Test Methods/SpecificationsVickers microhardness test:

    1. Rockwell – ASTM E18; NASM-1312-6
    2. Superficial Rockwell – ASTM E18; NASM-1312-6
    3. Brinell – ASTM E10
    4. Microhardness – ASTM E384; NASM-1312-6
    5. Vickers – ASTM E384, ASTM E92
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