Good quality deck hardware of stainless steel or chrome is highly resistant to corrosion and the marine environment, but still needs some maintenance if you want to keep it looking good. Be sure to offer this service if you notice small patches of surface corrosion due to oxidation of the fasteners. This type of corrosion can be easily removed with a good metal polish. After you are finished, protect it with a light coat of marine wax or a light coat of moisture displacing corrosion resistant lubricant. The wax will last longer. On aluminum fittings, polish until the applied polish turns black. Sprinkle Arm & Hammer baking soda on a rag and wipe the black right or the use of mineral spirits and throws on and clean. Believe it or not, if you use a lemon peel will reduce the dirt that other cleaners miss.
If you think that is too strong use lemon oil that is used in furniture and cabin a substitute for stainless steel cleaner. Alcohol also works in stainless steel. When cleaning aluminum look for a direction of grain. If you look closely you can see it. Rub with the grain.
Real bad stains can be rubbed with the shiny side of aluminum foil. Do not polish aluminum when it is 50 or F or less out as zero. Do not use cleaners with ammonia as a window cleaner as they can cause pitting. Silver polish works fabulous on aluminum. For brass, go cheap. A spoonful of flour, a tablespoon of salt and a tablespoon of vinegar. Apply the mixture of dust with a clean damp cloth and wipe the tarnish and shine. Wash with soap and water. If it is a difficult spot, cut a lemon in half, to reduce the powder with baking soda and rub on small sections at a time. Baking soda added to the necessary mild abrasive to scrub your brass to life. You can also use Nev-R-mate a can of presoaked wading which can be used to polish the aluminum and metal or Magic Mix Valco Products in Cincinnati, OH. "Lance Winslow" – If you have innovative thoughts and unique perspectives, come think with Lance; / wttbbs