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Quarzite Grigia
| Slabs are blue-grey in colour. They feature distinctive veins in shades of grey from dark to pale, which merge with material of the same grain size to create delicate contrasts. |
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| Size |
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30x30 cm
11 13/16"x 11 13/16" |
40x40 cm
15 3/4" x 15 3/4" |
45x45 cm |
60x30 cm
23 5/8" x 11 13/16" |
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L30127 |
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L63127 |
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P30127 |
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P63127 |
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B30127 |
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B63127 |
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60x60 cm
23 5/8" x 23 5/8" |
90x45 cm |
120x60 cm
47 1/4" x 23 5/8" |
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Special trims |
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Special trims available
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Technical features |
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Physical-chemical properties |
Test |
Required value |
Mean value |
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Sizes |
ISO 10545.2 |
Length and width ±0,6%
Thickness ±5%
Linearity ±0,5%
Wedging ±0,6%
Warpage ±0,5% |
±0,2%
±2%
±0,2%
±0,2%
±0,2% |
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Water absorption |
ISO 10545.3 |
≤0,5% |
0,04% |
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Flexion resistance |
ISO 10545.4 |
Modulus ≥35N/mm2
Breaking strength ≥1300N |
55 N / mm2
561 Kg / cm2
2500 N |
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Deep abrasion resistance |
ISO 10545.6 |
Volume ≤175mm2 |
120 mm2 |
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Frost resistance |
ISO 10545.12 |
Must not produce noticeable alteration to surface. |
Frost-proof |
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Coefficient of linear thermal-expansion |
ISO 10545.8 |
≤9x10-6°K-1 |
6,5x10-6°K-1 |
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Color resistance to light |
DIN 51094 |
Must not produce noticeable colour variation. |
No change in brightness or colour of samples. |
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Chemical resistance |
ISO 10545.13 |
Must not produce noticeable signs of chemical attack. |
Not attacked |
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Stain resistance |
ISO 10545.14 |
1 ‹ X ‹ 5 |
stains removed by hot running water (without detergent)(**) |
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Friction coefficient (slipperiness) |
BCRA REP
CEC 6/81 |
Satisfactory friction |
0,42 - 0,75 (*) |
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(*) = It can vary according to the surface finish.
(**) = For polished finish only |
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DIN standards |
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DIN 51130 |
R9:
Pre-polished and slate surfaces |
R10:
Antiqued and tumbled surfaces |
R11:
Flamed surfaces |
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DIN 51097 |
A+B:
Antiqued and tumbled surfaces |
A+B+C:
Flamed surfaces |
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Test ASTM (American society for Testing and Materials)
by TCA (Tile Council of America) |
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| Physical Properties |
Test |
Industry standards |
FMG results (*) |
| Water absorption |
ASTM C-373 |
Tile shall be impervious |
< 0,05% |
| Size |
ASTM C-499 |
Average Facial Dimension <1,5%
Wedging ±1%
Warpage ±1% of any edge
Range of tickness (inch.) < 0,04 |
0,15%
0,33%
0,17%
0,014 |
| Abrasive hardness |
ASTM C-501 |
≥100 |
217 |
| Freeze resistance |
ASTM C-1026 |
No sample must show alterations to surface |
Resistant |
| Chemical resistance |
ASTM C-650 |
To 10% HCL Acid - No sample must show visible signs of chemical attack to 10% KOH Alkali |
Unaffected |
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ASTM C-648 |
250 PSI or greater |
Exceeds standards > 460 PSI |
Skid resistance
(average coefficient of friction) |
ASTM C-1028 |
- |
Meets or exceeds requirements (Please ask for individual test reports) |
| Color resistance to the light |
DIN 51091 |
No noticeable color variation |
No change in brightness or color of samples |
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| (*) = as tested by Smith Emery laboratory |
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Quarzite Grigia
Origin: Italy (Val d’Aosta)
Colour: steelgray with lighter grey speckles
Availability: limited
Uniformity: modest |
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