Please select the social network you want to share this page with:
Zali snc - Tecnologie di lavorazione del granito
Granite
The granite comes from quarries in South Africa and is used because of the following qualities:
- dimensional stability: material free of internal tension
- thermal stability: coefficient of linear expansion is much lower than for cast iron and steel
- resistance to wear: the hardness guarantees durability
- hardness: similar to tempered steel
- acid resistant
- nonmagnetic
- electrical insulation
- resistant to oxidization: rustproof, noncorrosive
| Nero africa African black Noir Afrique | Nero assoluto Absolute black Noir Absolu |
|
|---|---|---|
| densità density densité | 2.85 kg/dm3 | 3.00 kg/dm3 |
| modulo di elasticità modulus of elasticity module d’élasticité | 60/95 Gpa | 90/103 Gpa |
| porosità porosity porosité | 0,09 % | 0,15 % |
| resistenza a flessione resistance to flexion resistance à la flexion | 24 MPa | 25 MPa |
| coefficiente di dilatazione termica coefficient of thermal expansion coefficient de dilatation thermique | 6.5×10-6 m/m°c | 5.9×10-6 m/m°c |
| durezza knoop knoop hardness dureté knoop | 7000 MPa | 7200 MPa |
| resistenza a compressione resistance to compression resistance à la compression | 244 MPa | 270 MPa |
| colore colour couleur | grigio scuro dark grey gris foncé | nero black noir |
| provenienza source origine | Sud Africa South Africa Afrique du sud | Sud Africa South Africa Afrique du sud |
| utilizzo use emploi | standard standard standard | su richiesta on request à la demande |