A VISUAL REPRESENTATION OF THE MOHS SCALE FOR METALLIC ELEMENTS AND ALLOYS. (AND THEIR COMMON USES BY HUMANS). Alkaline Earth Metal. Basic Metal.

This metal hardness chart organizes different types of metal using the Mohs hardness scale, a metric used by scientists to determine the scratch resistance 

The higher the number, the harder the material, but only relative to other numbers within a given scale. For example, an extremely hard steel might have a 

The Rockwell hardness number is directly related to the indentation hardness of the plastic material (i.e., the higher the reading, the harder the material).

The hardness of a material is measured against the scale by finding the hardest material that the given material can scratch, or the softest material that can scratch the given material. For example, if some material is scratched by topaz but not by quartz, its hardness on the Mohs scale would fall between 7 and 8. Indentation hardness.

Measuring Material Hardness √ Rockwell Hardness Test Rockwell Hardness test features over 30 different scales to choose from: hence you can select any suitable one for your material. The most commonly used scale for this type of test is "B" and "C." The test involves the application of a minor load before the application of the testing load.

Albion caster wheel hardness is based on material and durometer needs. View a comparison chart of common wheel materials to compare durometers and measurement scales. R is ideal load rating, with safety factor built in. Divide the total load weight by one less caster than you will use to safely determine load rating. Under 350 lbs. each

HARDNESS SCALE CHART WITH MATERIAL REFERENCE Tensile Strength - PSI MATERIAL REF. ROCKWELL SCALE ROCKWELL SUPERFICIAL BRINNELL Tensile Strength PSI RCD

The hardness number can then be read using different Rockwell hardness scales (A, B, C, etc.). The ideal scale depends on the type of indenter 

For example, though they respectively hold ratings of three and four on the Mohs scale, the minerals calcite and fluorite have a difference in hardness that measures approximately 25 percent, while diamond—with the highest rating of ten—is approximately 300-percent harder than corundum, which has a rating of nine.

The Rockwell scale is a hardness scale based on indentation hardness of a material. The Rockwell test measures the depth of penetration of an indenter under a large load (major load) compared to the penetration made by a preload (minor load). [1] There are different scales, denoted by a single letter, that use different loads or indenters.