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Natural stone
Today´s innovative raw material
Due to its fine crystalline structure, low expansion coefficients, great resistance to abrasion, excellent shock absorption and lack of any residual stress, natural hard stone is the ideal basis for manufacturing precision products.
Other
properties:
- Non-magnetic
- Non-creep
- Non-conductive
- Low coefficient of linear expansion
- Harder than steel
- Specific weight comparable to that of aluminium
- Elasticity comparable to that of
- cast iron
- No formation of burr
The
physical properties
of "Gabro" are:
- Resistance to bending of 12 N/mm²
- Resistance to pressure of 250 N/mm²²
- Specific mass of 2.8 kg/dm³
- Linear expansion coefficient of 5-7,5x10
- Resistance to abrasion of 8cm³/50cm²
- Vickers hardness of 850-900
Natural stone was and continues to be created by flows of magma cooling down following volcanic eruptions.
