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Granite bridge is used in CMM,Laser machines,drilling&milling machines for PC board and CNC and so on. There are a lot of precision machines need use it because it has high precision.
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%
Material | jinanqing |
Grade | Grade00 Grade0 |
Usage | Inspection tools |
Size | Accept Custom |
Standard | DIN 875/00 |
Packing | Wooden Case |
Color | Black |
Product Keywords | Precision lapped fine granite base |