CHARACTERISTIC | STANDARD AS PER ISO-13006/EN14411 GROUP Bla | MEAN VALUE OF SUNCORE PGVT | MEAN VALUE OF SUNCORE GVT | TEST METHOD |
Deviation in length & width | ± 0.5% | ±0.1% | ±0.1% | ISO-10545-2 |
Deviation in thickness | ± 5.0% | ± 5.0% | ± 5.0% | ISO-10545-2 |
Straightness in side | ± 0.5% | ± 0.1% | ± 0.1% | ISO-10545-2 |
Rectangularity | ± 0.6% | ± 0.1% | ± 0.1% | ISO-10545-2 |
Surface flatness | ± 0.5% | ± 0.2% | ± 0.2% | ISO-10545-2 |
Color difference | Unlterned | No change | No change | ISO-10545-16 |
Glossiness | As per mfg. | Min 90% | Min 4% | GLOSSOMETER |
Water absorption | < 0.50% | < 0.20% | < 0.20% | ISO-10545-3 |
Apparent density | > 2.0 g/cc | > 2.10 g/cc | > 2.10 g/cc | DIN 51082 |
Modulus of repture | Min. 35 N/mm2 | Min. 40 N/mm2 | Min. 40 N/mm2 | ISO-10545-4 |
Breaking strength | Min. 1300 N | Min. 1700 N | Min. 1700 N | ISO-10545-4 |
Impact resistance | As per mfg. | Min. 0.55 | Min. 0.55 | ISO-10545-5 |
Surface abrasion resistance | As per mfg. | Min. Class-3 | Min. Class-4 | ISO-10545-7 |
MOH's hardness | As per mfg. | Min. 4 | Min. 5 | EN 101 |
Frost resistance | No damage | No damage | No damage | ISO-10545-12 |
Thermal shock resistance | No damage | No damage | No damage | ISO-10545-9 |
Moisture expansion | Nill | Nill | Nill | ISO-10545-10 |
Thermal expansion(COE) | Max. 9.0 x 10-6 | Max. 6.5 x 10-6 | Max. 6.5 x 10-6 | ISO-10545-8 |
Crazing resistance | As per mfg. | Min. 10 Cycle | Min. 10 Cycle | ISO-10545-11 |