This is the a popular ASTM structural steel specification for carbon steel products for various end product fabrication mainly used in construction of bridges, buildings and general purposes. It is not recommended where low temperature toughness is important. It has excellent welding properties and is suitable for drilling, punching, grinding and other machining and fabrication processes.
General-purpose mild steel offering a constant 36 ksi min yield
Applications include construction of buildings, bridges, and other structures
Mechanical Properties
Metric
Tensile Strength
58 to 80 ksi
Tensile Strength, Yield
36 ksi min
Elongation
18% min in 8” 21% min in 2” (for plates wider than 24”)