- Test Results -
By ANSI Standard Specification A 137.1 Metropolitan® Ceramics' unglazed tile is classified as quarry tile, however, the exceptional technical characteristics noted enables Metropolitan quarry tile to be used in virtually any application suitable for tile.
Abrasion Resistance ASTM C501 Index of 35 or better D.T.E. tests at >80 or better
Absorption 5-hour boil ASTM C373 5% D.T.E. tests at 3% maximum and qualities as vitreous
Breaking Strength ASTM C649 Min. 250lbs. D.T.E. tests at 400lbs. or better
Compressive Strength ASTM C67 No industry standard D.T.E. tests at 10,000 P.S.I. or better
Facial Size Variation ASTM C499 Average facial dimension of each tile not to exceed 4% from nominal dimension(s) D.T.E. meets the standard
Freeze/Thaw ASTM C67 No industry standard ASTM test is 50 cycles
  Metropolitan internal test Metropolitan internal standard is 3,000 cycles  
Shear Bond Strength ASTM C482 50 P.S.I. or better D.T.E. exceeds the standard
Static Coefficient of friction ASTMC1028 No industry standard At time of manufacture, all D.T.E. colors meet or exceed measure of 0.80 dry and 0.70 wet.
Thickness ASTM C499 Max. range of .050" D.T.E. meets The standard.
Warpage ASTM C485 Max. 1.5% along any edge 1.0% on either diagonal D.T.E. meets the standard
Wedging ASTM C502 Max. 1.0% D.T.E. meets the standard
Chemical Resistance ASTM C650 Not Affected Not Affected by tested chemicals.