Steel for Olympic Barbell

Nov 09, 2014 46 Replies

Well, if price is the issue, you should be able to beat those prices I saw in the links. The trickiest part of the whole project will be the heat treatment. If you have a really good commercial heat-treat shop, they should be able to do it. It's cookbook. But, considering that you're pushing the steel near to its limits of strength, it has to be done right.

Not to be insulting, but how much can you lift? do you really need a bar that is made of 250,000 psi steel to handle the weight that you can lift at your present stage of development?

I can squat 315 lbs and deadlift 400. Not nearly enough to test 200000 psi. But what happens if I accidentally drop a loaded bar on my power rack safety rods? Will the bar survive the severe bending impact? That is when a stronger bar proves its strength.

I think we need to buy one branded bar and have to check chemical properties of shaft material.. As we have to do all cnc work or lathe work on Shaft like knurling,turning,grooving before heat treating But If we do heat treat bar can bend due to heat then after we need to remove bend on bend remove press machine or it take alot of time and money but if we complete this all process ..This bar ll be very easy to make in quantity.

As we know In India EN19 to EN 24 is available but its impossible to heat 7 ft shaft in oven...Oven should be very big.

For more info you can reply me.

My knowledge is limited to bars I have purchased at yard sales to be used as a source of raw material. These bars seem to be made erom the nastiest material imaginable; the best way to machine them being to use an angle grinder!

A quick look at the olympic type bars available seem to show an olympic style bar stated to be "120,000 lbs" tensile strength. If they actually meant 120,000 lbs/inch square then 4140 (normalized at 810 degrees C) will have a tensile strength of 147,938 psi and 4140 annealed is about 94,000 psi. So 4140 should work.

Companies sell heat treated bar stock

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example sells 4140 hot rolled with Brinnell of 269/341BHN and a tensile strength of 156,000 psi. Brinnell Hardness 271 = RC 28.8 and

342 = RC 26.6

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