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ASTM Test Results

ASTM Testing was completed on Wilkeson Sandstone on May 4, 2001 by SGS U.S. Testing Company Inc. Please note that the entire color spectrum and range of Wilkeson Sandstone was NOT tested. Refer to the color variation document on the Product page at this time if you are not familiar with our color spectrum. These test results refer to pieces that were selected from the "silver grey" and "cinnamon swirl" color spectrum. ASTM testing has not been conducted on the "oatmeal" or "full color" variances at this time. If you desire test results on these types of stone we will be happy to provide you with contact information of testing facilities as well as sample stones.
These standards are meant to provide the customer with a ballpark physical characteristic of Wilkeson Sandstone. Our stone has relatively high quality physical characteristics when compared to other types of sandstones. This does not preclude the requirement for a strict set of quality control standards during the building phase. Cracks can exist that are not visible during the fabrication process and only show during installation. Feel free to contact us with any questions.
ASTM C 97 - Absorption and Specific Gravity

Specimen

Density

(lb/cu.ft.)

Specific

Gravity

Absorption

1

151.54

2.429

2.69

2

152.78

2.448

2.57

3

157.99

2.532

1.90

Average

154.11

2.470

2.39

Requirements:

ASTM C 616-97, Standard Specification for Sandstone (Quartzitic) Dimension Stone

Absorption: 3.00%, maximum

Density: 150 lb/cu.ft., minimum

 

ASTM C 99 - Modulus of Rupture

Specimen

Width, in.Thickness, in.

Ultimate

Load, lbs.

Modulus of

Rupture, psi

1

4.064

2.230

1911

993

2

4.032

2.165

1684

936

3

4.060

2.047

1420

877

4

4.027

2.147

1921

1087

5

4.057

2.234

1527

792

Average

4.048

2.165

-

937 psi

The material tested does meet the minimum requirements of ASTM C 616-97 for Modulus of Rupture of Sandstone (Quartzitic) Dimension Stone.

 

ASTM C 170, Compressive Strength of Dimension Stone

Specimen

Width, in.Length, in.

Ultimate

Load, lbs.

Compressive

Strength, psi

1

2.066

2.090

63007

14599

2

2.127

2.055

53642

12278

3

2.109

2.043

50300

11677

4

2.027

2.086

58732

13893

5

2.143

1.993

54082

12663

Average

-

-

-

13022 psi

ASTM C616-97, Standard Specification for Sandstone (Quartzitic) Dimension Stone Compressive Strength: 10,000 psi, min.

All samples were tested perpendicular to the rift of the stone and conditioned in the dry state.

 

ASTM C 241 - Abrasion Resistance

Specimen

Bulk Specific

Gravity

Average

Weight (g)

Weight

Loss (g)

Abrasion

Index (Hab)

1

2.398

176.73

2.311

11.25

2

2.411

181.91

1.616

16.14

3

2.503

181.48

1.297

20.90

Average

2.438

16.09

ASTM C161-97, Standard Specification for Sandstone (Quartzitic) Dimension Stone Abrasion Resistance: 8.0 psi, min.