What Is The Hardness of Granite Surface Plate?

Granite surface plate is a natural stone material made of precision reference measurement tools, for the instrumentation, precision tools, mechanical castings inspection, are the ideal datum.

Granite surface plate is made of granite materials, these granite materials undergo rigorous physical tests, fine crystal, hard texture, compressive strength of 2290-3750 kg / square centimeter, the hardness of Mohs hardness 6-7.

Granite surface plate pass the strict physical tests and the choice of granite, crystal is fine, texture is hard, compressive strength is 3750 kg / square centimeter, the hardness of Mohs hardness 6-7. Granite slabs are extremely resistant to wear, acid, alkali, a high corrosion resistance, hand-lapping made, never rust. Granite belongs to non-metallic materials, no magnetic reaction, no plastic deformation. Its hardness is 2-3 times higher than that of cast iron (equivalent to HRC> 51), so the precision is good.

In addition to their hardness, granite surface plates offer several other advantages:

Wear Resistance: Granite's hardness contributes to its excellent wear resistance, minimizing deformation from contact with measuring instruments and workpieces. 

Dimensional Stability: Granite has a low coefficient of thermal expansion, meaning it changes very little in size due to temperature fluctuations. This property ensures that the surface plate remains dimensionally stable under varying temperature conditions. 

Non-Magnetic and Corrosion-Resistant: Granite is non-magnetic and resistant to corrosion, making it suitable for precision measurement environments where magnetic interference and rust are concerns. 

These properties make granite surface plates an ideal choice for precision measurement and inspection applications across various industries.