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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

In Coils

Diameter (Inch) Permissible Variations, Plus and Minus, in. Permissible Out of Round, in.
0.035 to under 0.076 0.001 0.001
0.076 to under 0.500 0.002 0.002
0.500 and over 0.003 0.003

Straightened and Cut

Diameter (Inch) Permissible Variations, Plus and Minus, in. Permissible Out of Round, in.
0.035 to under 0.076 0.001 0.001
0.076 to 0.148, incl 0.002 0.002
Over 0.148 to under 0.500 0.003 0.003
0.500 and over 0.004 0.004

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