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Hardness Testing of Bolts and Screws 3

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Wicsteve

Wicsteve

Mechanical
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Request help in finding references regarding the preparation and tesing of hardness for small screws and bolts. We are concerned with evaluation of both core hardness and case hardened.
 
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For metric fasteners, I recommend ISO 898-1 Mechanical properties of fasteners. In addition to the material it contains, it refers to the specifications that cover the actual hardness tests - ISO 6506 (Brinell), ISO 6507-1 (Vickers), ISO 6507-2 (micro Vickers), and ISO 6508 (Rockwell). Equivalent ASTM specifications are F606M (fasteners), E10 (Brinell), E92 (Vickers), E384 (micro), and E18 (Rockwell).
 
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Thanks for the ISO spec.
 
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