Specification

SPECIFICATION TEST STANDARD RESULT
Abrasion Resistance ASTM C1243 Maximum value of 275 mm
3
Metropolitan tests at < 275 mm
3
Absorption 5-hour boil ASTM C373 Maximum 5% Metropolitan tests at 3% maximum and
qualies as vitreous.
Breaking Strength ASTM C648 Average ≥ 250 lbf. Metropolitan tests at 400 lbf. or better.
Thickness ASTM C499 Max. range of .050” Metropolitan meets the standard.
Nominal Size ASTM C499 The facial dimension of each
tile in the sample shall not vary
more than ±2.00% from the
nominal dimension.
Metropolitan meets the standard.
Freeze/ Thaw ASTM C1026 Observations after 300 cycles.
No visible damage.
Metropolitan meets the standard.
Shear Bond Strength ASTM C482 50 P.S.I. or better Metropolitan exceeds the standard.
DCOF Acu Test (wet) ANSI A137.1 - 2012
BOT 3000
Threshold of 0.42 At time of manufacture, Metropolitan
QUARRYBASICS
®
XA Abrasive tests at
≥0.70. All other Metropolitan products
test above 0.60.
Warpage ASTM C485 Min. -1.5% Max. 1.5%
along any edge.
Min -1.0% Max 1.0%
on either diagonal.
Metropolitan meets the standard.
Wedging ASTM C502 Min. -1.0% Max. 1.0% Metropolitan meets the standard.
Chemical Resistance ASTM C650 As Reported Class A Classication
Stain Resistance ASTM C1378 As Reported Metropolitan meets the standard.
Scratch Hardness MOHS No Industry Standard 7
PERFORMANCE SPECIFICATIONS
By ANSI Standard Specication A137.1 Metropolitan Ceramics’ unglazed tile is classied as quarry tile,
however, the exceptional technical characteristics noted enable them to be used in virtually any application
suitable for ceramic tile. Metropolitan Ceramics’ unglazed tile meets both the ASTM standards, the ANSI
A137.1 specication for quarry tile, and Metropolitan internal requirements as listed.
MET0916