posted March 01, 2005 10:31 PM
I hadn't heard that. I do know you need to be carefull and use anti seize compound to make sure you dont gall the thread on them.
posted March 02, 2005 03:46 PM
Recommended Torque Spec's for Titanium Fasteners
Use torque values specified by your equipment manufacture, when available. For titanium fasteners the torque values are listed below. We recommend anti-seize or moly paste be applied to the threads. If you have a specified torque value outside the Mettec range give us a call so that we may be able to more clearly understand your application and provide specific solutions if one exists for the use of titanium in your assembly.
The importance of correct application cannot be overemphasized. Undertorque can result in unnecessary wear of nuts and bolts as well as the parts they hold together. When insufficient pressures are applied, uneven loads will be transmitted throughout the assembly which may result in excessive wear or premature failure due to fatigue. Overtorque can be equally damaging because of failure of the bolt or nut from overstressing the thread areas.
posted March 02, 2005 03:48 PM
here's the torque for ti bolts
Torque Limits for American Size Bolts in Tension
(For bolts in shear reduce the values shown below by 30-40%)
Non-lubricated Lubricated
Torque Torque Torque Torque
Bolt Size Min. Max. Bolt Size Min. Max.
5/16-18 80 in lbs 90 in lbs 5/16-18 72 in lbs 81 in lbs
5/16-24 120 in lbs 145 in lbs 5/16-24 108 in lbs 130 in lbs
3/8-16 160 in lbs 185 in lbs 3/8-16 144 in lbs 148 in lbs
3/8-24 200in lbs 250 in lbs 3/8-24 180 in lbs 225 in lbs
7/16-14 235 in lbs 255 in lbs 7/16-14 211 in lbs 229 in lbs
7/16-20 520 in lbs 630 in lbs 7/16-20 468 in lbs 567 in lbs
½-13 400 in lbs 480 in lbs ½-13 360 in lbs 432 in lbs
½-20 770 in lbs 950 in lbs ½-20 693 in lbs 855 in lbs
Torque Limits for Metric Size Bolts in Tension
(For bolts in shear reduce the values shown below by 30-40%)
Non-lubricated Lubricated
Torque Torque Torque Torque
Bolt Size Min. Max. Bolt Size Min. Max.
M6-1.00 80 in-lbs 100 in-lbs M6-1.00 72 in-lbs 90 in-lbs
M8-1.25 120 in-lbs 145 in-lbs M8-1.25 108 in-lbs 130 in-lbs
M10-1.25 200 in-lbs 255 in-lbs M10-1.25 180 in-lbs 230 in-lbs
M10-1.5 160 in-lbs 185 in-lbs M10-1.5 144 in-lbs 148 in-lbs
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posted March 04, 2005 08:20 AM
Ti is not as elastic as steel. A good example of this would be the Akula class soviet subs vs. the LA class american subs. The Akulas could dive to 700 meters, vice the LA class subs being limited to 400 or so meters. But the Akulas could only do that ONCE, and then they would have to restrict themselves to 600, then 500...The LA class could dive down to test depth all day long...
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posted March 01, 2005 04:32 PM
posted March 02, 2005 06:57 AM
