Porcelain stoneware
Porcelain stoneware
| Test method | Required value | Average values | ||
| Water absorption | ASTM C373 | ≤ 0.5% | 0.05% | |
| Deep abrasion resistance | ASTM C1243 | ≤ 175 mm³ | compliant | |
| Linear thermal expansion | ASTM C372 | no provision | α ≤ 4.4x10⁻⁶ °F⁻¹ / α ≤ 8x10⁻⁶ °C⁻¹ | |
| Stain resistance | ASTM C1378 | as indicated by manufacturer | Class A resistant | |
| Chemical resistance | ASTM C650 | as indicated by manufacturer | Class A resistant | |
| Frost resistance | ASTM C1026 | as indicated by manufacturer | Resistant | |
| Flame spread | ASTM E84 | - | Class A | |
| Slip resistance | ANSI A326.3 | - | DCOF ≥ 0.42 | |
| Shade variation | ANSI A137.1 | - | V4 |