The term hardness is not adequate and important for carbon fibers; they are soft materials.
the hardness of neoprene is 9
Carbon fiber does not have a defined hardness on the Mohs scale because the Mohs scale is specifically designed to measure the hardness of minerals based on their ability to scratch each other. Carbon fiber is a composite material made of carbon atoms bonded together in a specific pattern, so it does not fit the criteria for measurement on the Mohs scale. Instead, the hardness of carbon fiber is typically measured using other methods such as the Rockwell hardness scale or the Vickers hardness test.
Fiber
What is the difference in the hardness between glass and fiber glass
The hardness of Limonite is 4 t0 5.5 on the mohs hardness scale.
flint is a type of quartz, so it has a hardness of about 7 on the mohs scale of hardness
what is the difference between Shore-A Hardness & Barcol Hardness
The hardness of conundrum is 9 on the Moh's hardness scale
Mohs hardness: 6 Brinell hardness: 196 MPa.
The Mohs hardness of sodium chloride is 2,5.
no one likes your Hardness! hardness is not a good character.
Dolomite has a hardness of 3.5-4 on the Mohs scale of hardness.