Material: Granite mainly consists of pyroxene,pkaguickase,a small amount of olivine ,biotite and micromagetite.Its structure is hard and compact.It has solidified in a natural way over millions of year resulting in his hogeneity ,reliable stability,high strength and super hardness .It can keep relatively high precision under heave load.It’s suitable for measuring applications in factories and laboratories.

 

Physical properties

 

        Specific Gravity:                         2970-3070kg/m³

        Comprissive Strength:                     245-254N/ mm²

            Elastic Modulus:                         1.27-1.47N/  mm²

        Linear Expansion Coefficient               4.61*10^-6/°C

       Water Absorption:                           <0.13%

       Shore Hardness:                             Hs70 upwards of