Which standard does a low-alloy steel bar conform to?

A low-alloy steel bar conforms to ASTM A706. This standard specifically addresses the requirements for deformed and plain low-alloy steel bars for concrete reinforcement. One of the essential characteristics of steel conforming to ASTM A706 is its enhanced weldability compared to other steel grades. This property is particularly important in reinforced concrete structures where welded connections may be used.

Low-alloy steel typically contains a lower percentage of carbon and additional alloying elements, which improves its performance in various applications by providing better ductility and strength. By adhering to ASTM A706, low-alloy steel bars meet specific criteria for yield strength and elongation, which are crucial for ensuring that the bars function effectively in tension and can accommodate the demands of structural loading in concrete applications.

Other standards mentioned, such as ASTM A615, primarily pertain to carbon steel reinforcement bars; ASTM A992 covers structural steel shapes, plates, and bars for use in building frames; and ASTM A106 deals with seamless carbon steel pipe for high-temperatures. These standards serve different purposes than ASTM A706 and do not apply to low-alloy steel bars used for reinforcing concrete.