What is the chemical composition of ASTM A615?
Product Specifications
| Properties/Composition | India (IS: 1786) | American (ASTM A 615) |
|---|---|---|
| Chemical Composition (%) | ||
| Carbon | 0.30 Max. | 0.24-0.33 % |
| Sulphur | 0.06 Max. | 0.05 Max. |
| Phosphorus | 0.06 Max. | 0.06 Max. |
What is ASTM A615?
ASTM A615 covers deformed and plain carbon steel bars for concrete reinforcement. This specification covers bars and coils in four grades, Grade 40, Grade 60, Grade 75, and Grade 80. The grade designates the yield strength of the material, i.e. Grade 60 has a 60ksi minimum yield.
What is the chemical composition of rebar?
The most common type of rebar is carbon steel, typically consisting of hot-rolled round bars with deformation patterns. Other readily available types include stainless steel, and composite bars made of glass fiber, carbon fiber, or basalt fiber.
What is A615 rebar?
A615 rebar increases the tensile strength of concrete and can be used for both primary and secondary reinforcement. It helps absorb stress and weight and facilitates the more even distribution of the tension caused by the expansion and contraction of concrete when it is exposed to heat and cold, respectively.
Can you weld ASTM A615 rebar?
ASTM A615 (2014a) reinforcing bars can be welded, but may require preheating the bars up to 500° F.
What is the difference between A615 and A706 rebar?
Conventional reinforcing steel is used in the majority of reinforced concrete structures. Results from this study indicate that ASTM A706 reinforcing steel exhibits lower critical chloride threshold levels and higher corrosion rates than ASTM A615 reinforcing steel when embedded in cementitious materials.
What is Grade 60 rebar used for?
Grade 60 rebar offers a minimum yield strength of 60,000 pounds per square inch, or 420 megapascals on the metric grading scale. These characteristics make grade 60 rebar particularly well-suited for medium- to heavy-duty concrete reinforcement applications.
How is rebar made?
Rebar is usually made from a mild or high yield steel of grade 250 or 250 N/mm2 with great tensile strength. Steel (carbon or alloy) is melted down to liquid form, which requires an extreme amount of heat to achieve. Once melted, the liquid steel is pulled through small round openings to give the rebar its shape.
How do you calculate rebar grade?
One of the easiest is to look for the stamped numbers and letters between the lines on the rebar. This may include a set of three characters, such as B6S. This means that the manufacturer is shown by the letter B, it’s grade 60 rebar and it’s made of steel. If there’s another number there, that may show rebar sizes.
What is dual grade rebar?
Our special dual grade rebar combines the strength and other physical characteristics of Grade 60 rebar with the weldability of A-706 rebar. It is available in #6 through #11 in coil and long stock. Other specialty types and grades may be available upon request.
What is grade A706 rebar?
ASTM A706 rebar is a specification given to low-alloy reinforcing bars in either standard lengths or coiled configurations. This rebar grade is processed in open hearths, electric furnaces, or basic oxygen furnaces and is available in numerous grades, including grade 60 and grade 80.
What kind of steel is a615-60 grade?
A615-60 grade steel is a structural billet steel for structural applications. A615-60 grade is a material grade and designation defined in ASTM A615 standard. ASTM A615 is an international material standard for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement for strengthening application.
What is the minimum yield for ASTM A615 Grade 60 rebar?
ASTM A615 Grade 60 rebar offers a minimum yield strength of 60,000 pounds per square inch, or 420 megapascals on the metric grading scale. It also features a continuous line system, with one line running along the length of the bar which is offset a minimum of five spaces from the center.
What is the strength requirement for ASTM A706 reinforcing bars?
ASTM A706 requires that the actual ten-sile strength u shall not be less than 1.25 ƒ times the actual yield strength y (ASTM ƒ 2016b). Additional information on this re-quirement is given below. The other types of reinforcing steel are not subject to any similar requirement. ASTM A706 is also currently available only up to Grade 80 pri-
What kind of steel is used in rebar?
Rebar is typically manufactured in Grades 40, 60, 75, 80, and 100. Current ASTM Bar Specifications include: ASTM A615/A615M: Deformed and Plain Carbon-Steel Steel Reinforcing Bars.