We all know different metals can cause galvanic corrosion, but can you get galvanic corrosion on similar-ish steel alloys?
For example, could 4140 and 1026 cause problems if they are in long-term contact?
For years, my company (consulting engineering) has included "or Eq." in drawing material callouts (IE "Material: ASTM A36 or Eq.")
Is this wise to do?
How will a fab shop interpret "equivalent"?
If I happen to suffer from momentary stupidity and specify a tube made from A36 I am fine if they...
I have a material certification report (for C-channel) and at the bottom, it states: "No weld repair was performed on this heat".
This makes me wonder: Do mills sometimes repair defects in structural shapes? Grind out the defect, fill it with weld, grind it smooth, and send it out the door?
I have read several sources that say to know the torque factor (or nut factor - or bolt factor) you need to measure it for your particular situation. I am analyzing joints that have been being manufactured for quite some time. All joints have the same bolt, same threadlocker and the same...
Does anyone apply threadlocker under the head of the bolt?
Frequently, bolts are preloaded by measuring the torque used to tighten the bolt. Lubricants are frequently used on bolts to reduce the variability of the friction. When lubricating with oil, some people will recommend putting oil under...
Over the years, I have seen a few sources talking about tightening bolts until they yield. (https://en.wikipedia.org/wiki/Torque-to-yield_fastener)
The motivation is keeping the bolts tight and yield is easy to accomplish and yield is relatively predictable (compared to friction and torque)...
