Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
-----
Galvanic corrosion: aluminium fastened with galvanized steel bolts
We are assembling a multi plate culvert, made from aluminium, using aluminum bolts. However, the bolts are not able to reach the correct torque without shearing. Therefore, the supplier is suggesting galvanised steel bolts instead of the aluminium ones.
What is the danger of aluminium corrosion between the 2 metals?
buyer - Manukau, Auckland, New Zealand
April 11, 2008
May 5, 2008
Hi, Liam. Whenever two different metals touch you have the potential for galvanic corrosion. It may not be too severe in this instance, but I think it would be worth your while to look for aluminized bolts. These are steel bolts similar to galvanized bolts except that they are hot dipped into molten aluminum instead of molten zinc. Good luck.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)
Q, A, or Comment on THIS thread -or- Start a NEW Thread
Q, A, or Comment on THIS thread -or- Start a NEW Thread