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.
Applications
Typical applications for this grade include:
- Arbors
- Keyed shafts
- Motor shafts
- Gears
- Sleeves
- Link pins
- Lead screws
- Collets
- Busings
- Boring bars
Requirements
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:
***Minimum Total Quantity Per Order is 10,000 lbs.***
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 |
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