Rebar (short for reinforcing bar), known when massed as reinforcing steel or reinforcement steel, is a steel bar or mesh of steel wires used as a tension device in reinforced concrete and reinforced masonry structures to strengthen and aid the concrete under tension.
The minimum yield strength of standard rebar in the US is 60,000 psi. This means that the bar can have a yield strength greater then that but never less. For example, #3 rebar has a minimum yield strength of 6,600 pounds. The minimum yield strength of #4 rebar is (11,780 lbs.) 78% greater
In general, only steel rebar that is “Grade W” can be welded. … Rebar that is not produced to the ASTM A706 specification is generally not suitable for welding without calculating the “carbon-equivalent”. Material with a carbon-equivalent of less than 0.55 can be welded
