Granite Surface Plate High Performance Machine Bed Surface Plate

Granite Surface Plate High Performance Machine Bed Surface Plate

Granite Surface Plates are made from select granite with uniform distribution of light and dark constituents offering greater wear resistance than cast iron equivalents.
Granite plates have good temperature stability, are resistant to corrosion, are nonmagnetic and distortion free and make an
excellent surface for accurate marking out.

Physical Property of Jinan Black Granite:

Specific Gravity: 3.03 g/cm3
Shore Hardness: > 70Hs-80Hs
Tensile strength: 211Kg/cm2
Compressive Strength: 245-254Mpa
Linear Expansion Coefficient: 4.61´10--6/°C
Elastic Modulus: 30-50Gpa
Water Absorptivity: ≤0.13%