Properties determined by mechanical testing, such as yield strength, ductility, ultimate tensile strength, hardness, bendability, impact strength, etc.
Fracture motorbicycle piston was analysed by means of chemical composition analysis, hardness testing, metallographic examination, and the macro and micro-fractography analysis.
By means of analysis, hardness test, abrasion test, this paper studies the effect of boron-sulphurizing on microstructure and properties of boronized layer.
Analysis of the Stem-fillet blend fracture of exhaust valve was conducted by means of macroexamination, microstructure examination, chemical composition analysis and hardness test.
We have introduced Japanese Minolta, computerized color spectrometer, coating thickness tester, vancometer, pencil hardometer, water spraying machines and the like professional inspection equipment.
Considering its colourable and castable nature, its extended hardness range, low wear and superior load bearing capacity, polyurethane is a smart substitute for rubber.
With a hardness of approximately 5 and a porcellaneous luster near its lip, the shell exhibits a silky flame structure very similar to the pearl itself.
The deep formation has a high degree of hardness and abrasivity;the bit type selection is difficult and the ROP is low especially under the high density mud.
Only small amounts of wurtzite boron nitride and lonsdaleite exist naturally or have been made in the lab so until now no one had realised their superior strength.