Cold Rolled Steel Round Bar Tolerances

1018 cold roll bars have a higher tensile and yield strength compared to hot rolled bars.

Cold rolled steel round bar tolerances.

1018 cold rolled steel round bars are an excellent candidate for most processing techniques. Northlake produces and stocks a diverse range of cold finished round steel bars. Sizeinches maximum of carbon range0 28 or less maximum ofcarbon rangeover 0 28 to0. Cold finished carbon steel bar tolerances all tolerances in inches to the minus.

Standard tolerances for cold rolled steel bar stock usually choosing material thickness is one of the first steps a designer takes when starting a project. Tolerances stainless bars size tolerances hot rolled rounds and squares size tolerance inches out of round specified size over under out of square inches section inches1 over 5 16 to 7 16 incl 2 0 006 0 006 0 009 over 7 16 to 5 8 incl 2 0 007 0 007 0 010 over 5 8 to 7 8 incl. Precision shafting ground to a tolerance finer than a human hair 888 278 4682. The cold reduction of the bar results in significantly improved mechanical properties with a smooth surface finish to close tolerances.

With one of the largest size and length capabilities in the industry we produce sizes from 0 158 4mm through 16 round and lengths up to 75. The cross sectional area of the hot rolled bar is cold reduced resulting in accurate size smooth surface increased mechanical properties and machinability. 0 008 0 008 0 012 over 7 8 to 1 incl. Specified sizes rounds or squares over under out of round or square machining allowance minimum stock removal to 5 16 included 0 005 0 005 0 008 0 016.

Most cold finished bars are produced by cold drawing oversize hot rolled bars through a die. 15 5 17 4 303 304 316 321 416 cold finish. The cold working of the bar likewise improves machinability usually rated at 76. 0 0625 to 0 3125 excl 0 001.

If the bar is 1 5 thick x 3 5 wide the width tolerance of 0 006 will be the tolerance for the thickness as well which is 0 006. Width governs the tolerances both width and thickness for rectangle bars. Below is a chart for reference on hot rolled bar tolerances. 1018 is a low carbon steel with good case hardening qualities.