Aluminum ranks 2.5-3 on the Mohs scale of mineral hardness. This places it below materials like quartz (7) and diamond (10), meaning aluminum is relatively soft and can be scratched by harder substances.
Nickel has a hardness of 4 on the Mohs scale.
The Mohs hardness scale rating for brass is around 3 to 4.
Sulfur is a relatively soft mineral, with a hardness of 2 on the Mohs scale. It can be scratched by minerals with a higher hardness, such as calcite (3 on the Mohs scale) and fluorite (4 on the Mohs scale).
Stainless steel has a hardness level of around 5.5 on the Mohs scale.
Coal, as an organic sedimentary rock, is not determined to have a hardness on the Mohs scale of mineral hardness.
Aluminum Oxide is roughly 8.5 - 9.0 on the hardness scale.
Pretty soft. Hardness is around 2.5 to 3, depending on the aluminum alloy.
This scale was proposed by the Austrian geologist Friderich Mohs.
It's called the Ore
Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
The Mohs scale compares the hardness of an object or substance.
Topaz is number 8 on the Mohs scale.
Nickel has a hardness of 4 on the Mohs scale.
The hardness is 3-4 on Mohs scale.
The softest material in the mohs scale is talc
Aluminum oxide, as corundum, defines 9.0 on the Mohs hardness scale.
Azurite has a hardness of 3.5 to 4 on the Mohs hardness scale.