ASTM C615 is the definitive technical standard governing the physical, chemical, and aesthetic requirements for used in building and architectural applications. It covers blocks, slabs, tiles, and other finished or semi-finished granite products for exterior and interior use (e.g., cladding, flooring, countertops, steps, memorials).
This specification is used by architects and engineers to ensure the granite selected for a project is durable and structurally sound. It applies to: astm c615 pdf
For a granite variety to be classified as "Standard Architectural Grade" under ASTM C615, it must meet several minimum and maximum thresholds. Requirement (Minimum/Maximum) Referenced Test Method Density Min 160 lb/ft³ (2,560 kg/m³) Compressive Strength Min 19,000 psi (131 MPa) Modulus of Rupture Min 1,500 psi (10.34 MPa) Abrasion Resistance Min Hardness Index (Ha) of 25* ASTM C241 / C1353 Flexural Strength Min 1,200 psi (8.27 MPa) ASTM C615 is the definitive technical standard governing