Granite Surface Plate Optical Breadboard SMT Series

Granite surface breadboard

Product Features:

▪ Natural aging treatment for millions of years without Internal stress;

▪ Good rigidity and low disformation;

▪ Mounting holes can be customized.

Granite surface plate optical breadboard is widely used in optical, medical, high

precision equipment manufacturing and testing as well as aviation experiments

exprements. The granite surface plates are exploited from undergrand. With millions

of years natural aging treatment, it is highly stable and not subject to disformation in

under normal tempreture changes. It is black in appreance with even density. It

features anti-corrosive, anti-magntification and anti-diformation with high rigidity

and hardness.

Technical Specifications：

Specific Gravity

2970 - 3070 kg/m2

Compressive Strength

245 -254 Mpa

Elastic Modulus

1.27 - 1.47 Gpa

Linear Expansion Coefficient

4.61x10 - 6/0 C

Water Absorptivity

< 0.31%

Shore Hardness

70Hs Above

Model Number:

SMT-LW-H- (G)

SMT: Granite SurfaceOptical Breadboard

LW: Breadboard size: L*W

H: Thickness

e.g ： SMT-24-12 -200-08-G stands for granite surface plate optical breadboard with dimension 2.4*1.2*0.2 meters, ‘G’ indicates customized dimension.