Our granite measuring devices and granite mechanical components are made of high quality " JiNanQing" granite. Due to their high precision, long duration,good stability and corrosion resistance ,they have been more and more used in product inspection of modern industries and such high-tech areas as mechanical aerospace and scientific researches.
Physical Properties of "JiNanQing" Granite Rock
Specific Gravity:2970-3070Kg/m3
Compressive Strength:245-254N/mm2
Elastic Modulus:1.27-1.47N/mm2
Linear Expansion Coefficient:4.61×10-6/℃
Water Absorptive:<0.13%
Shore Hardness:70Hs
Specific Gravity:2970-3070Kg/m3
Compressive Strength:245-254N/mm2
Elastic Modulus:1.27-1.47N/mm2
Linear Expansion Coefficient:4.61×10-6/℃
Water Absorptive:<0.13%
Shore Hardness:70Hs