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I love your posts! LOLTOGWT said:Is it safe to use Simple Green on aluminium?
http://consumer.simplegreen.com/cons_faqs.php
Simple Green products have been successfully and safely used on aircraft, automotive, industrial and consumer aluminium items for over 20 years. However, caution and common sense must be used: Aluminium is a soft metal that easily corrodes with unprotected exposure to water. The aqueous-base and alkalinity of Simple Green or Crystal Simple Green can accelerate the corrosion process. Therefore, contact times of All-Purpose Simple Green and Crystal Simple Green with unprotected or unpainted aluminium surfaces should be kept as brief as the job will allow - never for more than 10 minutes. Large cleaning jobs should be conducted in smaller-area stages to achieve lower contact time. Rinsing after cleaning should always be extremely thorough - paying special attention to flush out cracks and crevices to remove all Simple Green/Crystal Simple Green residues. Unfinished, uncoated or unpainted aluminium cleaned with Simple Green products should receive some sort of protectant after cleaning to prevent oxidation.
One should never assume that aqueous solutions could be disposed of down the drain. Your local water treatment authority or publicly owned treatment works (POTW) will have information on treatment and disposal of these cleaners. Adjustment of pH and dilution are usually required before disposal to a drain.
Simple Green is corrosive and will react with bare aluminium causing hydrogen embrittlement (this is also known as stress cracking corrosion).
As the cleaner gradually ferments it reduces the pH from its normal mildly alkaline state to acidic. Slow corrosion of the aluminium results, generating a little hydrogen on the surface. Anaerobic conditions also generate hydrogen and hydrogen sulphide bio chemically, producing small amounts of methane. The aluminium probably has sufficient residual stress to be susceptible to hydrogen stress cracking, and this can be accelerated by the sulphide.
From Simple Green’s FAQ-
Simple Green products have been successfully and safely used on aircraft, automotive, industrial and consumer aluminum items for over 20 years. However, caution and common sense must be used: Aluminium is a soft metal that easily corrodes with unprotected exposure to water. The aqueous-base and alkalinity of Simple Green or Crystal Simple Green can accelerate the corrosion process. Therefore, contact times of All-Purpose Simple Green and Crystal Simple Green with unprotected or unpainted aluminium surfaces should be kept as brief as the job will allow - never for more than 10 minutes Large cleaning jobs should be conducted in smaller-area stages to achieve lower contact time. Rinsing after cleaning should always be extremely thorough - paying special attention to flush out cracks and crevices to remove all Simple Green/Crystal Simple Green residues. Unfinished, uncoated or unpainted aluminium cleaned with Simple Green products should receive some sort of protectant after cleaning to prevent oxidation.
Simple Green® Aircraft & Precision Cleaner:http://industrial.simplegreen.com/ind_prod_ext_mor.php
Meets Boeing Specs –D6 – 1748-7P (Water based, no solvents)
Extreme Simple Green®, Simple Green’s new aircraft and precision cleaning product, cuts through tough, built up grease, oil, dirt, pollution, insect residue and impact soils. We’ve found no other aircraft-approved product on the market that matches Extreme Simple Green’s cleaning performance. Yet, it causes no harm to aircraft structural metals, plastics, paints, or coatings.
How does it do this?
Extreme Simple Green gets its superior cleaning from a unique “triple play” cleaning formula. Two high performance surfactants and a new generation grease lifter/cutter combine to get the soil away from the aircraft surface quickly and then keep it away so that it can be cleanly rinsed away. Extreme Simple Green’s speed of grease cutting and its high capacity to hold grease, oil and soils in solution during cleaning and rinsing time are the keys to performance. This equals fast cleaning and no re-deposition, but Extreme Simple Green is also able to go into oil/water separators and have oil break from solution.
Extreme Simple Green’s safety upon aircraft materials and precision cleaning surfaces comes from a combination of proven anti-corrosion agents. A time tested coupling agent allows these to work together to battle corrosion and hydrogen embrittlement. These same qualities make Extreme Simple Green safe to put through pressure washing equipment, rack wash systems, dip tanks and parts washers, without any equipment damage.
The components of Extreme Simple Green are all low-toxicity compounds and the product contains no “solvents”. This leads to an excellent worker’s safety environment. All of the components are biodegradable, so Extreme Simple Green won’t accumulate in the environment and rinse-waste can be handled by standard waste water treatment methods. Extreme Simple Green meets or exceeds current and reasonably anticipated VOC requirements. It also contains no Clean Air Act Hazardous Air Pollutants (HAP), nor is it a RCRA hazardous waste in and of itself when disposed.
Industrial Equipment
Simple Green offers a multitude of ways to ensure proper use, dilution, mixing, and application of our outstanding cleaning products, including 30-, 60-, and 80-gallon capacity parts washers, a multi-dilution foamer, and a 4-way proportional. Click here to view Simple Green's industrial equipment.
Alternative product -Simple Green® Aircraft & Precision Cleaner: http://industrial.simplegreen.com/ind_prod_ext_mor.php
Meets Boeing Specs –D6 – 1748-7P (Water based, no solvents)
Jimmie said:Just used AA Foam & AA Gel on back tires and wheels. This was done the way I thought Justin said that he did it. Put Foam on while wet and wipe off . I used terry cloth and it was incdedible how much black comes off ( what I thought was a pretty clean tire ). I sprayed into wheel wells as a cleaner. Alot more black on the towels. Anyway on the front tires and wheels I used DP Gel Wheel Cleaner and DP Gloss Tire Gel (both of these were awesome to use and it looks like a little goes a long way). End result. Both sets look great. I'll give a slight nod to the DP in front.