SAE 4041 Heat Treatment
SAE 4041 Heat Treatment
(OP)
What Heat Treatment process(s) would best be used to treat SAE 4041 to an Ultimate tensile strength of around 150,000 psi?
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SAE 4041 Heat Treatment
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SAE 4041 Heat TreatmentSAE 4041 Heat Treatment(OP)
What Heat Treatment process(s) would best be used to treat SAE 4041 to an Ultimate tensile strength of around 150,000 psi?
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RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
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RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
I believe this is one of those situations where you would almost have to try a sample heat treatment using the 1" square bar (versus hardenability projections using a 1" diameter round) and run a tensile test to see how close one could get by using an oil quench/temper heat treatment. The core hardness after oil quench and temper may still be sufficient to reach 150 Ksi. Sounds like fun……
RE: SAE 4041 Heat Treatment
Instead of all the machining could you use a std 4140 hex bar?
If not standard but close to standard it would be lot easier to machine a hex down that a Rd.
Look at 4140 ann
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RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
My finished machined bar needs to be an octagonal (1" flat to flat) with shallow (0.09" deep) slots machined in 4 of the 8 sides. The 62.5" long bar is for a fitness (gym)application. I need to be able to machine a square (or other) bar to this shape, then heat treat it to my requirements. Requirements are as close to 150,000 UTS as possible & a surface hardness greater than ~Rc 30. I have bearings (Rc 58)riding on the bar flats so the ideal would be a bar as hard as the bearing (but not necassary). The bar will be lifted so it must be strong (safe) and not fail if dropped accidentally (impact). Up to 200 lbs of weight plates may be loaded on.
Any and all material selections are welcomed. Cost as always is an issue. I need the material machined and then hardened (strength/toughness). I would also consider a thin dense chrome (Armaloy) lastly to bump the surface hardness up.
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
Riding into the sunset the sun sometime gets into your eyes.
swall,
Would you please define a "guess and by gosh method" based on sound metallurgical engineering practices?
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
I am considering switching from SS to steel for cost savings. I also now realize I may be able to get the appearance of electro polished SS and the corrosion protectionby adding a thin dense chrome coating to steel. I am evaluating both alternatives against one another.
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
RE: SAE 4041 Heat Treatment
The last time I was involved with TDC it was limited in deposited thickness so it will tend to reflect the properties of the base metal, the harder the base metal the better.
Rolling contact from a bearing might be a problem though the higher hardness you are specifying will help. A sliding sleeve bearing might be better.
I would definitely get in touch with Armoloy and discuss you design parameters with them.
I've had my best luck with the Texas Bunch, but that was some time ago. Their home office is in Illinois.
http://www.armoloy-tx.com/tdc-coating.html
RE: SAE 4041 Heat Treatment