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TECHNICAL PROPERTIES | Specific weight | 2,45 a 2,48 kg/dm3 | | Refractive index | 1,51 a 1,53 | | Softening point | 730º | | Coefficient of lineal expansion | 85 x 10-7 (bet. 0 y 300º) | | Young modulus | .7 x 105 kg/cm2 | | Mohs hardness scale | 4 | | Rockwell (c) | 48 rc | | Specific heat at 20ºc | 0,18 cal/gr/ºc | | At 1000 ºc | 0,32 cal/gr/ºc | | Thermal conductivity at 20ºc | 0,018 cal/seg/cm/ºc | | Dialectric constant (1mc a 20ºc) | 7,0 a 7,6 | | Volume resistivity at 250 ºc | 106,5 x 107 ohms | | Dialectric strength | 4500 kv/cm | | Thermic Difussion | 0,005 cm2/seg |
Tests carried out in homologised laboratories:
| UNE-EN-ISO 10545-2 | Determination of Dimensions and Surface Quality | | UNE-EN-ISO 10545-3 | Determination of Water Absorption | | UNE-EN-ISO 10545-11 | Determination of Crazing Resistance for Glazed Tiles | | UNE-EN-ISO 10545-13 | Determination of Chemical Resistance | | UNE-EN-ISO 10545-14 | Determination of Staining Resistance | | UNE-ENV 12633 (clase II, clase III) | Determination of Non polished paving Slip Resistance | | DIN- ANTISLIP 51097 | Determination of Slip Resistance | | UNE-EN-ISO 10545-7 | Determination of Surface Abrasion for Glazed Tiles Resistance | | |