Sentence examples for great hardness from inspiring English sources

Despite its great hardness, some sapphire is carved or engraved, especially in the Orient.

They have great hardness values, ranging between 20 and 30 GPa, between alumina and diamond.

Its closeness of grain, great hardness, and fine hazel-brown colour, mottled and striped with black, render it valuable for veneering and furniture making.

Except for diamond, which presents special problems because of its very great hardness (see diamond cutting), gemstones are cut and polished in any of three ways.

Because of their great hardness and wear resistance, hypoeutectic ledeburitic chromium steels are widely used for machining and measuring tools.

Reduced cooling rates or isothermal aging result in complex multiphase microstructures with great hardness (up to 800 HV10) and wear resistance.

The greater hardness was retained after EJM.

This is reflected in the greater hardness of ruthenium and osmium.

It may be distinguished from calcite, the commoner form of calcium carbonate, by its greater hardness and specific gravity.

All mutants showed greater hardness of heat-induced gels than WT, especially I99C/A213C and F59C/I99C/A213C.

Remarkably, the cast wedge exhibits greater hardness and higher elastic modulus than the ribbon.