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1144 A-311 Cold Drawn Steel Bar

Cold drawn 1144 steel bar to ASTM A311 (B) is a process by which 1144 is drafted twice as much as a typical cold drawn bar. It is then stress relieved in a precisely controlled furnace to improve the mechanical properties. The process achieves strength that is comparable to quenching and tempering, while achieving the performance of a free machining steel. Eaton stocks a number of diameters of this grade to meet your demands quickly.

1144 A-311 cold drawn steel


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


Eaton Steel Bar Company can meet the following specifications for this grade:

  • ASTM A108
  • ASTM A311

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

***Minimum Total Quantity Per Order is 10,000 lbs.***

Estimate Your Order Weight


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