These are carbon-manganese free machining grades which have been severely cold worked to produce high tensile properties. The bars are specially treated to relieve the stresses set up by the cold working, thus minimizing the tendency toward warpage after machining which is common in ordinary cold.drawn bars.
These steels have built-in high strength hardness, and wearability, without the necessity of heat treatment. Thus they are often used for parts requiring mechanical properties ordinarily obtained by heat treating an alloy grade to the Rockwell C hardness range of 23-30 after machining.
Both grades are available as Cold Drawn Bars or Ground and Polished Bars. The latter possess the close tolerances and fine finish normally found in ground and polished bars, plus the combination of free machinability, minimum warpage, high strength and wearability not found in ordinary steels.

Stock Lengths: 12' Approx.

ASTM A311 Class B

Color Marking: Ends painted Gray
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Size

Estimated Weight per Foot

Estimated Weight 12-Ft. Bar

N/A .4145 lb N/A 4.973 lb
N/A .5641 lb N/A 6.769 lb
N/A .7368 lb N/A 8.842 lb
N/A .9325 lb N/A 11.19 lb
N/A 1.151 lb N/A 13.82 lb
N/A 1.393 lb N/A 16.72 lb
N/A 1.658 lb N/A 19.89 lb
N/A 1.946 lb N/A 23.35 lb
N/A 2.257 lb N/A 27.08 lb
N/A 2.590 lb N/A 31.08 lb
N/A 2.947 lb N/A 35.37 lb
N/A 3.327 lb N/A 39.93 lb
N/A 3.730 lb N/A 44.76 lb
N/A 4.605 lb N/A 55.26 lb
N/A 5.572 lb N/A 66.87 lb
N/A 6.631 lb N/A 79.56 lb
N/A 7.783 lb N/A 93.39 lb
N/A 9.026 lb N/A 108.3 lb
N/A 11.79 lb N/A 141.5 lb
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