Ok, if it's so simple, why don't you come up with it. We could all
use it. You must not be an engineer. There's a lot more involved in
deciding which grade and type of fastener to use than calculating the
necessary torque.
Cheers,
CR
Daniel1312@aol.com wrote:
>
> I am sure there is a simple way to calculate a revised torque figure when
> switching from one grade of bolt to another. There is nothing special about
> the manufacturers figures - they just decided to use a certain spec of bolt
> and then calculated the torque figure for it.
>
> 1312
>
> In a message dated 16/10/00 03:52:04 GMT Daylight Time, ccrobins@ktc.com
> writes:
>
> << The reason to stay with the same grade bolt as was originally supplied
> is that it's the only way to make the mfr's torque figures apply.
> Torque figured are meant to stretch the fastener to the middle of its
> tensile strength. Change the elasticity of the fastener and you change
> the torque spec. Then you don't know what the correct figure is for the
> application.
>
> The above is why I doubt what you said about the fastener losing its
> tensile strength when torqued to the right spec.
>
> Regards,
>
> CR
> >>
|