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Recent content by RackleyJ

  1. RackleyJ

    What temperature affects annealing of 6061 T4 and/or T6

    I have a cast aluminum part that was made from 6061 Aluminum (it is either T4 or T6). The part was heated to 750°F in order to remove some press fitted bearings (I am unsure of the duration), and then was allowed to air cool. Is it possible that the heating may have compromised the material? In...
  2. RackleyJ

    Funny Error Message Regarding Proxy Objects

    I'm not sure if this is a Draftsight or AutoCAD question, but Draftsight seems to be the source of my problems so I figured I would start here. I use Draftsight, and my coworker uses AutoCAD 2002. My coworker gets the following error message when opening drawings that I have edited. Is there...
  3. RackleyJ

    Proof Strength of 316 Stainless Steel Bolts

    Why do 316 Stainless Steel bolts not have a proof stress value? I'm in the process of developing a torque chart. I've found a wealth of information online already, but I've hit a snag with stainless steel bolts. The most generic torque calculations use the clamp load (or Bolt Tension), which...
  4. RackleyJ

    Need Assistance with Material Selection (A514 Grade C vs E)

    Can someone give me a guideline, or some reference material that details the differences between the different grades of A514 (specifically Grades B, C and E)? We typically use A514 Grade B for temperatures up to 700°F. We typically use A514 Grade E for temperatures above 700°F. I have no...

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