Black Rebar and Grade 60 Carbon Steel Reinforcing Bar
Black rebar, also referred to as black reinforcing steel bar, is the most widely distributed and cost-effective type of concrete reinforcement available. Unlike epoxy coated rebar, black rebar is uncoated carbon steel, making it the standard choice for structural concrete projects operating in environments with limited moisture or chloride exposure.
At Harris Supply Solutions, we supply black reinforcing bar in several grades and lengths to meet the specific engineering demands of your project. Review our rebar size stock guide to explore the full range of available dimensions.
Available Grades and ASTM Standards for Black Rebar
We supply black reinforcing bar conforming to two primary ASTM standards, each engineered to meet distinct structural and weldability requirements. Our inventory is stocked across our national distribution network to ensure consistent availability for contractors and fabricators regardless of project scale. For a deeper overview of reinforcing bar specifications and terminology, visit our rebar guide.
ASTM A615 Rebar
A615 Rebar is the most common domestic reinforcing bar specification, conforming to ASTM A615 standards. It is available in Grade 40 and Grade 60, making it suitable for a broad range of general construction projects from residential foundations to large scale commercial concrete structures.
ASTM A706 Rebar
A706 Rebar is a low-alloy weldable reinforcing bar engineered specifically for use in seismic zones and structures requiring controlled tensile properties. Its chemical composition is carefully managed to ensure consistent weldability without compromising the structural integrity of the finished assembly. For full compliance documentation, refer to our rebar safety data sheet.
Grade 60 Carbon Steel Rebar Specifications
Grade 60 is the most specified and widely used reinforcing bar grade in the United States. With a minimum yield strength of 60,000 psi and a minimum tensile strength of 90,000 psi, Grade 60 carbon steel rebar delivers superior structural performance for demanding concrete reinforcement projects. Both our A615 and A706 black rebar products are available to Grade 60 specifications, ensuring your material meets the most rigorous engineering and code requirements.
| Property | Grade 40 | Grade 60 |
|---|---|---|
| Minimum Yield Strength | 40,000 psi | 60,000 psi |
| Minimum Tensile Strength | 60,000 psi | 90,000 psi |
| ASTM Standard | A615 | A615 / A706 |
| Elongation (min %) | 11% | 9% |
Applications for Black Rebar
Black carbon steel rebar is the standard reinforcing bar specification for the majority of general concrete construction in the United States. Contractors, fabricators, and procurement managers across a wide range of industries rely on our black rebar supply for the following project types:
- Residential and commercial foundation work
- Structural slabs and floor systems
- Retaining walls and site infrastructure
- Masonry construction
- Precast concrete components
- Swimming pool construction
- Renewable energy infrastructure
Request a Quote for Black Steel Rebar
Harris Supply Solutions is one of the largest distributors of steel rebar and black steel remesh in the United States. Our team is specially trained to advise on grade selection, sizing, and compliance requirements across a wide range of construction project types. If you have questions or are ready to move forward, contact our team or fill out the form below to receive a no-obligation price quote.
FAQs
ASTM A615 is a standard carbon steel reinforcing bar specification used across the majority of general construction projects. ASTM A706 is a low-alloy steel specification engineered for applications requiring controlled tensile properties and reliable weldability, most commonly specified in seismic design zones. While both are available in Grade 60, A706 has tighter chemical composition requirements to ensure predictable performance under dynamic loading conditions.
Black rebar is uncoated carbon steel and is the standard specification for concrete structures in dry or low-moisture environments where chloride-induced corrosion is not a significant concern. For structures exposed to deicing salts, marine conditions, or prolonged moisture, epoxy coated rebar provides a fusion-bonded polymer barrier that physically prevents chloride ions from reaching the steel surface. For projects requiring the highest level of corrosion resistance, fiberglass rebar offers a completely non-corrosive alternative to carbon steel. Harris Supply Solutions carries all three product lines to ensure your team can source the right specification for any project condition.
Yes. Black rebar and uncoated rebar refer to the same product. The term "black" describes the natural mill scale finish on the surface of the carbon steel bar after the rolling process, as opposed to rebar that has received a secondary coating such as epoxy or galvanizing. It is widely used across masonry, swimming pool, and general structural concrete construction.
