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1144 also sometimes referred to as Stress Relieved is a carbon-manganese grade which is severely cold worked to produce high tensile properties. The bars are specially treated to relieve the stresses set up by the cold drawing, thus minimizing the tendency to warp after machining which is common in ordina. 1144 cold roll bars have high strength hardness, without the need of heat treatment. 1144 has the combination of free machinability, minimum warp, high strength, and a good wear resistance not found in ordinary metals.