rusting speed on bare car metal
rusting speed on bare car metal
(OP)
Hello everyone,
I have a very specific question to ask, and chose to try this forum. Unfortunately I don´t come from the material science department and can´t answer it myself. Some people are arguing that the rust on the car in the following photos can´t have appeared in a matter of days, so I want to ask the people who actually know about these matters. I want to keep the discussion strictly apolitical and scientific.
http:/
The car said to be pictured a few hours after an alleged israeli strike.
http://im
The car pictured a week later near a red cross station (which is situated some hundred meters from the mediterranean)
Many people argue that the amount of rust is too much for a few hours/one week of rusting. I tend to say that this is not the case, considering salt water vapor doing it´s work and the paint being scratched off in places. Also, does high explosives/a shaped charge going off nearby accelerate the rusting process?
Thanks in advance for answers (or apologies if this topic is deemed to inappropriate and sensitive),
Stefan
I have a very specific question to ask, and chose to try this forum. Unfortunately I don´t come from the material science department and can´t answer it myself. Some people are arguing that the rust on the car in the following photos can´t have appeared in a matter of days, so I want to ask the people who actually know about these matters. I want to keep the discussion strictly apolitical and scientific.
http:/
The car said to be pictured a few hours after an alleged israeli strike.
http://im
The car pictured a week later near a red cross station (which is situated some hundred meters from the mediterranean)
Many people argue that the amount of rust is too much for a few hours/one week of rusting. I tend to say that this is not the case, considering salt water vapor doing it´s work and the paint being scratched off in places. Also, does high explosives/a shaped charge going off nearby accelerate the rusting process?
Thanks in advance for answers (or apologies if this topic is deemed to inappropriate and sensitive),
Stefan
RE: rusting speed on bare car metal
Do a search for flash rust. I search for "flash rust" on Google and this was the first listing.
http://www.camaros.net/shop/resto_3.html
Tom
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
RE: rusting speed on bare car metal
RE: rusting speed on bare car metal
This is very superficial rusting, it can almost be wiped off, but it starts quickly.
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: rusting speed on bare car metal
One factor would be, what was in the explosives that hit these parts? There may be chemicals that are FAR MORE CORROSIVE than salt and water.
RE: rusting speed on bare car metal
Re "In general on vehicles, a high corrosion rate would be near 2mm/year."
-- That's excessive, even for 'high.' Vehicles would rust out in 1-2 years. Manufacturers use electro-galvanized steel and several coats of paint to prevent that. Even offer 100,000 mile warranties against rust-through.
Difficult to judge from a few photos without knowing the initial coating and the effects of the explosive heat and mechanical forces. Nitrates are generally not corrosive, but maybe other possible residues.
Mild steels used in auto bodies can rust in seconds, as when pickled clean, rinsed and exposed to air. Pre-to galvanized usage, auto sheel was mostly just phosphated prior to painting. Some newer, micro-alloyed bake-hardening steel resist rusting better, but probably N/A to the vehicle in the photos.