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  • Alloy
1144

1144 Product Guide

Applications | Specifications | Mechanical and Chemical Data | Tolerances

Overview

Also called "stressproof", this alloy has excellent strength and hardness, and is specifically treated to relieve stresses in the metal created during the manufacturing process. This means that the bar is less prone to warping after it is machined or heat treated. Further, 1144 is easily machined. Typically used in nuts, bolts, arbors, gears, pinions, piston rods, sleeves, shafts, and screws. "Stressproof" is a trademark of the LaSalle Steel Co.

 

Common Trade Names

 UNS G11440, AISI 1144, C1144 



Other Resources

Safety Data Sheet | Weight Calculator | Mill Test Reports

 

Products

1144 Round Bar


Applications

  • Nuts & Bolts
  • Arbors
  • Gears
  • Sleeves
  • Screws

Specifications


ASTM

A311  




Physical Properties 1144
 
Cold Finish
Density0.284 lb/in3
Ultimate Tensile Strength 108 ksi
Yield Tensile Strength 89.9 ksi
Shear Modulus 11,600 ksi
Shear Strength 73 ksi
Hardness Rockwell | Brinell B95 | 217
Elongation at Break Percentage 10%
Reduction of Area 30%
Modulus of Elasticity29,700 ksi
Poisson's Ratio 0.29
Machinability Percentage83%
Melting Point2,580-2,650 °F
Specific Heat 1.1 x 10^-1 BTU/lb-°F
Thermal Conductivity 346 BTU-in/hr-ft^2-°F
Electrical Conductivity 7.2% IACS


Chemistry Information
Element
Percentage
Fe 97.54 - 98.01
C 0.4 - 0.48
Mn 1.35 - 1.65
P 0.04 max
S 0.24 - 0.33
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