really, i would prefer not to cbore my thread engagement away... though it is in design already. And all the pretty colours on the plate.... LOLback to the original question. (45 years of supplying aluminum and stainless steel valves in marine and pulp mill environments)
Yes, stainless steel and aluminum form a galvanic couple and will corrode. BUT, it’s not that simple. Relative mass also comes into play. Small area/mass of stainless in a large area/mass of aluminum is generally OK, stainless fasteners in aluminum boats work just fine.
Aluminum rivets in stainless sheet dissolve in weeks in offshore BC environments, stainless bolts in aluminum motor mounts last forever.
Brass set screws would also work fine.
Can Stainless Steel and Aluminum Be Used Together?
When aluminium makes contact with stainless steel fasteners, corrosion can occur. However, the two metals can be used together, read more!www.marshfasteners.com
3/8 aluminum plate with a 1/2 ss thru bolt, size on hole, so a tight fit
This is the result after about 4 years installed,dry exterior service, I had to hammer the bolt out the the plate it was stuck so bad, had it been threaded there would be nothing left
Do airplanes use stainless fasteners in the airframe ? I wouldn't have thought so given the weight of stainless, work hardening and possible corrosion issues ?
I'm just a model builder, maybe some FS guys can weigh in. I thought stainless was used but cant say where or in combination with what material. I see NAS spec all the time which relates to strength & other parameters, but links refers to some alloy compositions including stainless. Maybe the key thing is coating?
Bolts | Aircraft Spruce Canada
Aircraft Spruce Canada is a worldwide distributor of certified and homebuilt aircraft supplies.www.aircraftspruce.ca
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Time is not relevant when retired... drilling 1350 holes was about 8 hours, thread-milling about 5 hours. Tapping was done in sessions divided over 3 days, with a cordless drill. I will be adding to my original thread later with the whole story....oh man that is a lot of tapped holes, how many hours do you figure you have in that plate ?
Time is not relevant when retired... drilling 1350 holes was about 3 hours, thread-milling about 3 hours. Tapping was done in sessions divided over 3 days, with a cordless drill. I will be adding to my original thread later with the whole story....
sorry I changed it...... Machine drilled about 8 hours max. Thread-milling 5 hours. Finish tapping was done over 3 days in 3 hour sessions, so about 9 hours manual work.oh thats not as bad as i thought! 6 hours split up over a few days would hardly be noticeable
sorry I changed it...... Machine drilled about 8 hours max. Thread-milling 5 hours. Finish tapping was done over 3 days in 3 hour sessions, so about 9 hours manual work.
@ShawnR and @Marc Moreau should be able to comment on this.....