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Ballpark Calculation on shear strength from tensile strength

Ballpark Calculation on shear strength from tensile strength

Ballpark Calculation on shear strength from tensile strength

(OP)
Hi All,

I am looking to find a "ballpark" calculation of converting tensile strength on heat treated material into a shear strength measurement. I would then test the forumla when I get the parts back.

Specifically I am looking at 1/4 diameter Pin 416 SS heat treated to Rc40. I would be perfoming a double shear test where I will put the part into a test fixture where the  middle section will be pressed until breakage occurs on the both outer sections.

RE: Ballpark Calculation on shear strength from tensile strength

The ballpark conversion is ultimate shear strength ~ 0.6*UTS.

RE: Ballpark Calculation on shear strength from tensile strength

(OP)
Thank You for the reply.

RE: Ballpark Calculation on shear strength from tensile strength

Are you trying to determine the shear stress or use it as a shear pin?  If you want it to shear you need to groove it.  At this higher strength I would suspect that shear will not exceed 60% of UTS.

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RE: Ballpark Calculation on shear strength from tensile strength

(OP)
I'm trying to determine what the double shear value is for this diameter 416 ss with a RC 40 heat treat. The part will be used as a shear pin.

Thanks

RE: Ballpark Calculation on shear strength from tensile strength

If you groove the pin you will get much more repeatable shear values.  You can control both the exact size and the shape of the initiation by using a groove.  You can even adjust the depth slightly for different strength levels.

= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm

RE: Ballpark Calculation on shear strength from tensile strength

Quick note: for non-circular sections you should use 0.5*UTS for safety. Agree with the 0.6 comments above for this case.

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