Granite Surface Plate

Raw Material:

Jinan Back Granite

Raw Material Physical properties:

Specific gravity: 2,970 to 3,070kg/m3

compressive strength: 245 to 254Mpa

Elastic modulus: 30 to 50Gpa

modulus of rupture:2500 to 2600kg/cm2

Linear expansion coefficient: 4.61 x 10-6/0C

Water absorption: ≤0.07

Shore hardness: above 70Hs

Characteristics:

High precision reliable stability resistant to deform and guaranteed accuracy under normal ambient temperature

No-rust and anti-corrosion

Wear-resistant, long service lifespan

Any cuts or scratch in surface do not influence measuring precision

Non magnetization

Glossy surface without sluggishness when work-pieces or tools are moving

Usage

For inspecting machine spindle and squareness work-pieces