All stainless steel will discolour, stain or rust if not maintained correctly. Even marine grade 316 stainless steel or Duplex 2205 will discolour and stain if installed in an aggressive environment and not maintained properly. The more aggressive an environment is, the more maintenance is required. Aggressive environment include:
- Coastal areas which have sea spray
- Downwind from rubbish dumps or chemical plants
- On main roads with excessive carbon monoxide
- Near mining dumps and filtration plants
- Below an air conditioner unit
- Below a wood beam
- Below a steel gutter
- Washing glass or tiles with certain chemicals
- Some borehole waters
- Continuous temperatures in excess of 500 C
Stainless steel should be washed down at least monthly with a mild cleaning solution. This should wash away all grime that could contaminate the surface. If the grime is left on the surface, it could result in discolouration. Don't use an aggressive cleaing solution unless you are an experienced and professional trades-person. Don't wash down stainless steel with acids, powders, sodas, grinding discs, abrasive papers or cloths, etc. unless you are an experienced and professional trades-person. Just a simple wash down and rinse is required.
There are 3 or 4 brands of stainelss steel coatings which are availabe, which add even more corrosion resistance to the stainless steel. Speak to your installer for advice and a quote.
Not always that easy to tell, but generally tea staining is a light brown colour and can be scratched off with your nail, while rusting can be a very dark red or brown colour and if you try to scratch it off, you may see a small hole under it.
AC Stainless are dedicated to providing the correct stainless steel grade for the relevant application. That is why our glass clamps, spigots and rail convertors are Duplex 2205, as these are most prone to tea staining out in the field.
Remember, if you live in an aggressive environment and you look after your stainless steel balustrade, it should oulive you.
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