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torque specs grade 2 titanium bolts
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1960fury
Posted 2015-06-15 8:38 AM (#481560)
Subject: torque specs grade 2 titanium bolts



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Location: northern germany		someone know the max allowed torque for grade 2 titanium bolts? like 3/8"-16?
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58coupe
Posted 2015-06-15 9:50 AM (#481565 - in reply to #481560)
Subject: Re: torque specs grade 2 titanium bolts



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Location: Alaska		Found a chart for grade 5 and 8. 3/8"-16 grade 5, dry 30ft/lb, oiled, 23 ft/lb. use moly paste on assembly.
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1960fury
Posted 2015-06-15 2:42 PM (#481591 - in reply to #481565)
Subject: Re: torque specs grade 2 titanium bolts



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Location: northern germany		thank you very much
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ruchaven
Posted 2015-06-15 3:21 PM (#481595 - in reply to #481560)
Subject: Re: torque specs grade 2 titanium bolts


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Location: York County, PA		Look it up in the Machinery Handbook. Titanium is so brittle I can't imagine what you would want to use it for. Use trial and error, put one in a vice and see on a torque wrench where it brakes , then go only half of that and you will have the right amount of torque.

Catch ya later.
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57chizler
Posted 2015-06-15 4:07 PM (#481598 - in reply to #481595)
Subject: Re: torque specs grade 2 titanium bolts



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Grade 2 is pure titanium (not alloyed)....inferior in strength to the cheapest steel bolt. Alloyed titanium bolts are superior in strength to most steel....widely used in the aircraft industry.
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1960fury
Posted 2015-06-15 6:10 PM (#481609 - in reply to #481595)
Subject: Re: torque specs grade 2 titanium bolts



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ruchaven - 2015-06-15 3:21 PM

Look it up in the Machinery Handbook. Titanium is so brittle I can't imagine what you would want to use it for. Use trial and error, put one in a vice and see on a torque wrench where it brakes , then go only half of that and you will have the right amount of torque.

Catch ya later.


yup its not much stronger than 7075 aluminum. i'm using lots of aluminum bolts or nuts in my car, where strength/safety is of no concern. found lots of cheap 3/8" ti bolts and thought i could replace the intake/exhaust bolts but 30 ft/lb wont do.

if titanium behaves like steel its hard to tell when it breaks. usually only the threads shear which is hard to tell when exactly.
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1960fury
Posted 2015-06-15 6:17 PM (#481611 - in reply to #481598)
Subject: Re: torque specs grade 2 titanium bolts



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57chizler - 2015-06-15 4:07 PM


Grade 2 is pure titanium (not alloyed)....


didn't know that. grade 5 already is really "fun" to tap and die!
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