Aluminum corrosion
Aluminum corrosion
(OP)
I am looking to replace aluminum rivets used in a 6063-T6 aluminum structure. The main reason is to reduce assembly costs. I am thinking of using Monel 400 or 304 stainless steel. Their higher tensile strength will reduce by 1/2 the number of rivets. I am concerned about galvanic corrosion. No surface treatement will be performed to the aluminum structure. The environment is mostly air but may be subjected to atmospheres with some salt content, such as on a ship. Will Monel or 304 stainless be acceptable? Does anyone have any suggestions on altertive materials for rivets used in aluminum?





RE: Aluminum corrosion
RE: Aluminum corrosion
RE: Aluminum corrosion
boo1: What is proseal? Is it like RTV?
RE: Aluminum corrosion
RE: Aluminum corrosion
RE: Aluminum corrosion
RE: Aluminum corrosion
RE: Aluminum corrosion
RE: Aluminum corrosion
RE: Aluminum corrosion
The Islander aluminium fuse floor is riveted with Monel rivets, and has a very good service record. It must have seen a *lot* of abuse (including many awful and strange fluid spills) over the years, and there're over a thousand (?) of them out there.
RE: Aluminum corrosion
RE: Aluminum corrosion
-R.
RE: Aluminum corrosion
Formulated by Naval Air Warfare Center (NAVAIR), POC’s: Dr. Vinod Agarwala, C. Matzdorf. We have tested the Tri-valent Chromium on aluminium as a primer and a stand alone coating with very good success.
We always wet install fasteners with Proseal 870 sealant. This helps seperate the galvanic couple and seal water penetration.
protective paint for aluminum is Zinga:
http://www.zingacoating.com/
RE: Aluminum corrosion
Range of Corrosion Potential
MATERIAL (in Volts)
Mg and Mg -1.60 to -1.63
Al Alloys -0.76 to -1.00
Zn -.76
Wrought Iron -0.60 to -0.71
410 Stainless 0.46 to -0.58
316 Stainless -0.43 to -0.54
Aluminum Bronze -0.31 to -0.42
Yellow Brass -0.30 to -0.40
Cadmium -0.40
Tin -0.31 to -0.33
50-50 Pb-Sn Solder -0.28 to -0.37
Aluminum Brass -0.28 to -0.36
Silicon Bronze -0.26 to -0.29
Lead -0.19 to -0.25
Nickel 200 -0.10 to -0.20
Monel 400 -0.04 to -0.14
Ti -0.05 to +0.06
Graphite +0.20 to +0.30
Zn is more compatible with Al than Cd (closer potentials). In addition, Cd can be mildly toxic.
RE: Aluminum corrosion