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Get PriceName the nine most common methods of testing hardness 1 Rockwell hardness 2 Rockwell superficial hardness 3 Brinell hardness 4 Vickers microhardness 5 Knoop microhardness 6 Shore Scleroscope hardness 7 Sonodur hardness 8 Mohs hardness 9 File hardness Describe the Rockwell hardness testing method
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Get PriceExcellent High Hardness Mineral Ball What Is The Strongest Material In The World Jm Hardness May 13 2024 On the Rockwell scale diamonds hardness is 98 07 HRC while titanium measures 36 HRC on the same scale in terms of hardness Due to being the hardest known mineral in the world diamond is extensively used in making drilling bits rock
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Get PriceIt is measured to plus or minus 05mm using a low magnification portable microscope The hardness is calculated by dividing the load by the area of the curved surface of the indention the area of a hemispherical surface is arrived at by multiplying the square of the diameter by 3 14159 and then dividing by 2
Get PriceHardness is defined by how well a substance will resist scratching by another substance For example if mineral A scratches mineral B and mineral B does not scratch mineral A then mineral A is harder than mineral B If mineral A and B both scratch each other then their hardness is equal A scale to measure hardness was devised by Austrian
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Get PriceTo determine the hardness of the test material any improvised means such as a fingernail 2 5 a knife 5 5 or glass 5 5 can be applied It makes this method simple and affordable In most cases the hardness coefficient of the material crushing in ball mills is in the range from 6 to 9 on the Mohs scale
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