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Applications | Specifications | Mechanical and Chemical Data | Tolerances
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.
UNS G11440, AISI 1144, C1144
Safety Data Sheet | Weight Calculator | Mill Test Reports
ASTM |
---|
A311 |
Physical Properties 1144 | |||||
Cold Finish | |||||
---|---|---|---|---|---|
Density | 0.284 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 | 210 | ||||
Elongation at Break Percentage | 10% | ||||
Reduction of Area | 30% | ||||
Modulus of Elasticity | 29,700 ksi | ||||
Poisson's Ratio | 0.29 | ||||
Machinability Percentage | 83% | ||||
Melting Point | 2,580-2,650 °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 |