All Questions
16
questions
1
vote
1
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233
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What aluminum grade is the most resistant to corrosion in alkaline environment?
Quick google search will return either 6000 series (6061 more specifically), or 3003
However with so many option and each having it's own benefit, I still haven't make my decision
What I am looking ...
- 11
1
vote
2
answers
169
views
Influence of design on corrosion control
In "Ahmad. (2006). Principles of corrosion engineering and corrosion control (1st ed.). Elsevier/BH.", it is stated that to fight against metallic corrosion it is more convenient to design (...
- 111
0
votes
2
answers
77
views
Steel grade recommendation
I'm working on a private project (no commercial motivations here) to build an outdoor (wood fired) pizza oven for my garden.
It's basically made of steel, so my question is which steel grade would be ...
1
vote
1
answer
608
views
Salt grinder and corrosion
I am looking for a kitchen salt grinder.
I know salt is an aggressive compound and it needs a little bit of attention when we design products.
Since most of grinders have plastic-made or stainless ...
- 335
4
votes
2
answers
573
views
Why does corrosion take place at certain stressed regions?
Why does certain parts of metal show more corrosion at the place where there is high dislocation density in comparison to the place where the dislocation density is less? I do sincerely feel that this ...
- 281
2
votes
1
answer
214
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Galvanic compatibility with mild steel
Let me just get this out of the way: this is a total newbie question. But I appreciate any advice I can get!
I'm rebuilding / retrofitting a wood-and-steel trailer, and trying to identify affordable ...
- 123
0
votes
0
answers
38
views
Galvanic corrosion in a non-corroding environment
If we submerge a welded structure of, for example, Duplex (1.4462) and Stainless Steel (1.4301) in water, which is normally not a threat for either of these materials alone, do we see corrosion in the ...
- 34
2
votes
3
answers
92
views
What type of stainless steels can resist 6 months under the sea?
Resist means without catastrophic corrosion here.
We assume that there is no coating or anodic protection.
The steel can be mirror polished and passivated.
To make it more difficult, the shape is not ...
- 161
1
vote
1
answer
113
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How thick of an oxide might form on a cast zinc part?
I'm looking into possible failures of a cast zinc part. I'm wondering if the Zinc-oxide that develops after a time would have a thickness great enough to cause dimensional tolerancing issues?
...
- 622
5
votes
1
answer
2k
views
How does Alloy 20 compare with Ti 6-4, C-276 and 316 stainless for corrosive service?
While I've designed tons of plastics for corrosive service, the fasteners to hold the plastics together are inevitably metallic. There have been a lot of ways to protect them from rusting (due to ...
- 5,333
4
votes
3
answers
2k
views
What metal material to use for stove exhaust pipe?
If biofuel is burnt, for example wood, and the stove I am building is made of metal, what is the most appropriate metal material I should use to avoid excessive corrosion in the exhaust pipe of the ...
- 417
1
vote
0
answers
44
views
Corrosion of a galvanic couple made with silver and gold
If a bangle is made out of gold and silver, connected with each-other would there be a corrosion happening? If so can it be explained using the galvanic series?
Also do those metals undergo oxidation ...
- 111
6
votes
1
answer
3k
views
How does corrosion occur at a temperature below 0 degrees Celsius?
The ISO 9223 standard indicates that there should be no corrosion at temperatures below 0 degrees celsius. Independent researchers have however proposed to lower the minimun temperature stated in the ...
user1164
11
votes
1
answer
2k
views
Will a sacrificial anode protect any length of metal that it is connected to?
When using a sacrificial zinc anode, is there a limit to the distance that its protection will extend?
The protection works based on electrical conductivity, so distance would seem to affect the ...
- 10.7k
13
votes
1
answer
1k
views
Can Zinc/Aluminum coated anchor rods be used in concrete?
Bolts and anchor rods that are very high strength ($F_u$ > 150ksi) are not supposed to be galvanized. This is because of concerns about hydrogen embrittlement. This includes ASTM A 490 bolts and ASTM ...
- 10.7k