21721 L 30*60

(1) Dimension and Surface Quality (Vitrified Tiles):

• Deviation in length and width: Average +0.20mm, Average -0.00mm (complies)
• Deviation in size from the 10 test specimens: Average +0.14mm, Average -0.00mm (complies)
• Thickness: Average +0.00mm, Average -0.15mm (complies)
• Straightness of sides: Max +0.14mm, Max -0.16mm (complies)
• Rectangularity: Max +0.16mm, Max -0.17mm (complies)
• Surface flatness (centre curvature): Max +0.12mm, Max -0.00mm
• Surface flatness (edge curvature): Max +0.12mm, Max -0.00mm
• Surface flatness (warpage): Max +0.14mm, Max -0.00mm
• Surface quality: Minimum 95% free from visible defects (complies)

(2) Physical Properties:

• Water absorption: Average 0.11% (complies)
• Modulus of rupture (MOR): Average 39.27 N/mm² (complies)
• Breaking strength: Average 1805.57 N (complies)
• Crazing resistance: No crazing observed (complies)
• Thermal shock resistance: 10 cycles, min 15/145% (complies)
• Coefficient of linear thermal expansion: Max 4.74×10⁻⁶ K⁻¹ (complies)
• Resistance to surface abrasion: Passed at 2100 revolutions (complies)
• Moisture expansion: No expansion observed (complies)
• Scratch hardness of surface: 5 Mohs (complies)
• Bulk density: 2.2764 g/cc (complies)
• Impact resistance: Min 0.57 (complies)

(3) Chemical Properties:

• Household chemical resistance (ammonium chlorine solution 100 g/L): Class GA (complies)
• Swimming pool salt (sodium hypochlorite solution, 20 mg/L): Class GA (complies)
• Acid & Alkalies resistance (hydrochloric acid solution 3% (V/V)): Class GLA (complies)
• Acid & Alkalies resistance (citric acid solution 100 g/L): Class GLA (complies)
• Acid & Alkalies resistance (potassium hydroxide solution 30 g/L): Class GLA (complies)
• Acid & Alkalies resistance (hydrochloric acid solution 18% (V/V)): Class GHA (complies)
• Acid & Alkalies resistance (lactic acid solution 5% (V/V)): Class GHA (complies)
• Acid & Alkalies resistance (potassium hydroxide solution 200 g/L (V/V)): Class GHA (complies)
• Resistance to staining: Min Class 3 (complies)
• Lead and cadmium release: Lead < 0.1 mg/dm², Cadmium < 0.1 mg/dm² (complies)
• Small color differences: No difference observed

Please note that the information provided is based on the given technical specification and may not include additional details or context.