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Torsion Bar Steel

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John Bromley	07/12/2014 20:16:37
84 forum posts	I have aquired a length of 9/16 square torsion bar from a broken tail lift. Before I go about destroying drills and milling cutters. Could someone tell me, can this material be milled/drilled readily or will it need some form of heat treatment to soften it? I'm guessing it is some grade of spring steel. It's a nice lump of stuff that I can get more of, if it's good. John
Bob Brown 1	07/12/2014 20:53:45
1022 forum posts 127 photos	There is a chance it is 5160 Steel and as is likely to be difficult to machine but once annealed should be reasonable.
John Bromley	07/12/2014 22:08:30
84 forum posts	If I cut it into 6" or so lengths and toss them in my wood burning stove for a few hours and leave to cool, do you think it will soften them up? I might just try it, and do a before and after test drilling. John Edited By John Bromley on 07/12/2014 22:09:07
Ady1	08/12/2014 00:59:16
6137 forum posts 893 photos	Had a bit of broken 1 inch by 5 inch by 10inch leaf spring recently. The shaper dealt with it via both carbide and hss tooling. Only the outer skin was resistant so it was probbly a type of case hardened steel, like a sword, tuff skin only Edited By Ady1 on 08/12/2014 01:00:53

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