Ceramic Vs Diamond Hardness

The hardness of fine ceramics is generally indicated using a vickers hardness number.

Ceramic vs diamond hardness.

In this test a pyramidal diamond indenter is pressed into a polished surface under known loading conditions and the size of the indentation is related to the hardness of the material. But don t confuse lightness with fragility. Let s start with a little background on both pencil hardness and the infamous mohs scale. Ceramic is considered to be a hard durable material and nearly as hard as tungsten as we will discuss below.

Ultimate glass nano ceramic coating for automobile marine aero surface protection. Vickers hardness is a resistance value obtained by pressing a diamond indenter onto a test specimen. 1 talc talc 2 gypsum gypsum 3 calcite calcite 4. The mohs scale of mineral hardness m oʊ z is a qualitative ordinal scale characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material.

The moh s scale of hardness is a chart used by the jewelry business to measure the scratch resistance of common materials. In terms of hardness tungsten carbide is rated at 9 on the mohs scale while ceramic is 7 diamond is a 10 and gold is 3 to give a sense of scale. The method for measuring the hardness of fine ceramics is defined in jis r 1610 iso 14705. The pencil hardness method was originally developed by pencil manufacturers as a quality control method in the early 1900 s.

9h refers to the level of hardness test of the ceramic coating once it cures on the surface. To make the comparison easier to understand we have included the hardness of familiar materials such as teeth and fingernails. The most scratch resistant and hardest material is the diamond that is rated at a ten. So and so s 9h ceramic.

Hardnes number original scale modified scale. Diamond c 10 7000 usa canada. It s based on the pencil scale of hardness which is used by professional artists graphic designers and more to pick a pencil lead strength that helps them with writing or drawing projects. Hardness tables mohs hardness scale.

This is a very touchy subject as many companies have built their brand around the hardness rating.