The most widely used wire product in the world. It generally refers to wire with a carbon content of 0.25 max. It is easy to form into various wire products on four slide machines and CNC equipment. It is extensively used in concrete construction as a reinforcing product as well as wire forms for consumer items.
Chemistry
Element
Limit, or Max of Specified Range, %
Over Max Limit, %
Under Min Limit, %
Carbon
0.25 and under
0.02
0.02
Over 0.25 to 0.55, incl
0.03
0.03
Over 0.55
0.04
0.04
Manganese
0.90 and under
0.03
0.03
Over 0.90 to 1.65, incl
0.06
0.06
Phosphorus
To 0.040, incl
0.008
***
Sulfur
To 0.060,incl
0.008
***
Silicon
0.35 and under
0.02
0.02
Over 0.35 to 0.60, incl
0.05
0.05
Copper
Under minimum only
***
0.02
Lead
0.15 to 0.35, incl
0.03
0.03
Permissible Variations in Diameter for Uncoated Coarse Round Wire