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1144 A-311 Cold Drawn Steel Bar

1144 cold drawn steel bar is a carbon-manganese grade produced using a proprietary process that draws the bar through a special die under heavy draft. It is then stress relieved in a precisely controlled furnace. The grade is beneficial since it is stress relieved and annealed. It provides improved wearability without case hardening, strength without heat treating and excellent machinability. Eaton stocks a number of diameters of this grade to meet your demands quickly. 

1144 A-311 cold drawn steel

1144 A-311 Cold Drawn Steel Bar Applications

Typical applications for this grade include arbors, keyed shafts, motor shafts, gears, sleeves, link pins, lead screws, collets, busings, boring bars. 

Common Industries Include: 

  • Automotive
  • Agriculture
  • ATV
  • Motorcycle
  • Construction

Shapes and Sizes

Eaton Steel Bar Company supplies 1144 A-311 cold drawn steel bar in a variety of sizes ranging from 7/16" ≤ 5/8" - 3 1/2" . The shape available for this grade include:

  • Round

Standard "1144 A-311 Grade" Chemical Composition

Carbon 0.40 -0 .48
Manganese 1.35-1.65
Phosphorus (max) 0.040 
Sulfur 0.24-0.33


Specified Mechanical Properties for "Grade 1144 Class B" up to 2 inches

Tensile strength (psi) min 115,000
Yield strength (psi) min 100,000
Elongation in 2" (%) min 8
Reduction of area (%) min 25