Item Details
Quarry Location:
Mankato MN
Water Absorption:
0.14 %
Density:
178.1 LBS/FT3
Flexural Strength:
2, 400 psi
Compressive Strength:
26, 800 psi
Recommended Usage:
Building stone, monuments, pool coping, sills, ornamental stone, interior, exterior, wall, floor , paving
Finishing Surface:
Polished, honed, sawn cut, brushed, tumbled, chiseled, split, flamed
Additional Names:
Superior Black Granite, Superior Northern Sapphire, Superior Northern Granite
Description:
Superior Northern
ASTM C 97
Density.................... 178.1 LBS/FT3
Absorption............. 0.14 %
ASTM C 170
Compressive Strength.................... 26,800 PSI
ASTM C 99
Modulus of Rupture......................2,700 PSI
ASTM C 241
Abrasion Resistance................. 28.7 HA
ASTM C 880
Flexural Strength......................2,400 PSI
ASTM test results available.
Weight Guideline
Granite weighs approximately 178 pounds per cubic foot. Per square foot, weight translates as
7/8” Thickness =13 LBS/FT2
1-1/4” Thickness =19 LBS/FT2
2" Thickness =30 LBS/FT2