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Conforms to A-955.
The bar numbers are based on the number of 1/8 inches included in the nominal diameter of the bar.
Unit of Measure

Specifications

Material

 N/A Steel

Shapeform

 N/A Bar

Size

 N/A 1/2 inches

Size

 N/A 0.5 inches12.7 mm

Bar Size No.

 N/A 4

Weight

 N/A 0.668 lbs/ft0.994093552 kg/m

Nominal Diameter

 N/A 1/2 inches12.70 mm

Nominal Area

 N/A 0.20 in²129.032 mm²

Nominal Perimeter

 N/A 1.571 inches39.9034 mm

ASTM Specification

 N/A ASTM A-615-40 ASTM A-615-60

Max. Stock Length

 N/A 20 ft30 ft40 ft60 ft