Magnesium is a mineral found in a wide variety of foods. Inside of our bodies we mostly find magnesium in our bones (60-65%), in our muscles (25%) and in other cell types and body fluids. Magnesium cannot be made in our body like all minerals, which is why we need to take it in through magnesium-rich foods.
The Brinell hardness number (HB) is the load divided by the surface area of the indentation. The diameter of the impression is measured with a microscope with a superimposed scale. The Brinell Hardness Number is computed from the equation: P is the applied load of 3000, 1500, or 500kg.
HARDNESS MEASUREMENT METHODS 3. QQ-P-416F converted to HTML. tensileWhen you perform a Brinell hardness test with a well maintained, calibrated testing device, you can learn:astm e140-97 table 2: hrb: hb hra: 15t: 30t: 45t: hv: hrb: hb: hra: 15t: 30t: 45t: hv: 100: 240 : 61.