12L14 cold rolled steel flat bars, or flat stock, are an excellent candidate for most processing techniques. 12L14 cold rolled steel flat bars have a smooth grey oiled surface with sharp defined edges, and accurate dimensions throughout. 12L14 cold roll bars have a higher tensile and yield strength compared to hot rolled bars. 12L14 is a low carbon steel with good case hardening qualities. 12L14 is used extensively in automatic screw machines for manufacturing numerous parts requiring considerable machining and close tolerances, along with a smooth finish. 12L14 can be used to maximum advantage where considerable machining is required, such as bushings, inserts, couplings, and hydraulic hose fittings. With good ductility, 12L14 is suitable for parts involving crimping, bending, or riveting. ASTM A108-07 is the standard specification for steel bar, carbon, hot-wrought, special quality.