Characteristics
National Blue is a dark-grey granite characterised by a compact and uniform grain structure, featuring a blend of grey, silver and pink tones. Its balanced appearance, combined with a distinctive texture, makes it particularly suitable for contemporary and minimalist architectural projects.
Applications
National Blue is suitable for exterior applications, including ventilated façades, wall cladding and other architectural elements. Its durability and resistance to weathering make it particularly suitable for outdoor use.

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National Blue
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| Apparent density | 2710 Kg/m³ | EN 1936:2008 |
| Open porosity | 0,4 % | EN 1936:2008 |
| Water absorption at atmospheric pressure | 0,2 % | EN 13755:2008 |
| Flexural strength | 18,2 MPa | EN 12372:2008 |
| Flexural strength after 48 frost cycles | 21,8 MPa | EN 12371:2010 / 12372:2008 |
| Reaction to fire | A1 | EN 13501-1:2018 |
| Abrasion resistance (Capon) | 17 mm | EN 14157:2017 |
| Slip resistance - Dry conditions | 61 SRV | EN 14231:2006 |
| Slip resistance - Wet conditions | 62 SRV | EN 14231:2006 |
| Determination of Compressive Strength | 144,8 Mpa | EN 1926:2008 |
| Determination of Compressive Strength after freezing | 211 Mpa | EN 12371:2015 / EN 1926:2008 |