What is ASTM A615?
ASTM A615 is a testing standard that defines the dimensional, chemical, and physical requirements for plain and deformed carbon-steel reinforcing bars used in concrete construction. It establishes material grades and performance criteria to ensure reinforcing steel delivers consistent strength, ductility, and reliability in structural applications.
Steel reinforcing bars (rebar) manufactured in accordance with ASTM A615 are designed to absorb the stress and weight of concrete structures, including bridges, buildings, and other infrastructure.
Rebar may be supplied in cut lengths or coils, depending on the application. Deformed reinforcing bars feature patterned surface protrusions that enhance mechanical bonding and prevent longitudinal movement once embedded in concrete, while plain bars have smooth surfaces and are typically used where anchorage demands differ.
Mechanical testing is performed to evaluate physical properties such as tensile strength, elongations, and satisfactory surface condition after bending. The standard references ASTM A370 for tensile testing procedures and ASTM E290 for bend testing.
Rebar produced in accordance with ASTM A706/A706M is also considered compliant with the requirements of ASTM A615.
