Stainless steel balustrades Vs Balcony system balustrades
In order one can make an informed decision as to which materials to
choose when deciding on which handrails and structure to order for your
glass balustrades, it is important to research and understand the
advantages of each type of material.
Important factors to take into account in relation to stainless
steel railings, aluminium railings, stainless steel balustrades and
aluminium balustrades are:
Longevity - i.e. corrosion resistance
Maintenance requirements
Aesthetics and finish quality
Price
Eco rating - i.e. how "green" is the use of the product?
The information below has been compiled to help you better
understand the differences between stainless steel balustrade system to
Balcony Systems glass balustrade system.
Stainless steel railings, stainless steel handrails, stainless steel balustrades etc.
A bit of history first.
Stainless steel was discovered by Harry Brearley in England in 1913.
Brearley discovered it while doing an experiment of increasing the
levels of chromium. Based on his experiment, a 12% of chromium makes
the steel resistant to corrosion caused by acid. In 1920, there are two
stainless steel types that were found to be useful and these are the
martenstic stainless steel and the austenitic stainless steel.
Stainless steel is also known as steel alloy that generally have at
least 11.5% of chromium content. This material has certain qualities
that do not stain and rust as compared to ordinary metals. When the
alloy grade and type are not completely identified, it is known as
corrosion resistant steel.
Stainless steel has different grades and surface finishing. It has
around 150 grades. Fifteen of these grades are widely used. These types
are produced into coils, plates, sheets, wires and tubing. Due to the
qualities of stainless steel, it made its way as one of the mainly used
steel in many commercial applications.
Stainless steel handrails and stainless steel railings are very
popular and generally considered one of the most preferred materials
for balconies in marine areas. This is true to some degree but there
are some real pitfalls in this that, if not known or properly avoided,
disappoint both end user and manufacturer.
Almost everyone who makes stainless steel products finds that they
rust occasionally. That upsets users since they have paid for
"stainless." A
good question for designers, then, is "How and when do stainless steel
railings become vulnerable to corrosion and how can they be protected?"
To address that question, Hitchiner has tested various conditions
that cause stainless steels to rust. Here's a synopsis of the factors
at play in stainless steel corrosion and the results and conclusions
that can be drawn from Hitchiner's testing program.
Stainless Steel Corrosion - There are two basic types of stainless
steel-highly corrosion resistant, nickel-chromium austenitic steels and
less corrosion resistant ferritic and martensitic steels. For special
purposes, there are also duplex stainless steels, a mixture of the two
structures.
Basically, the formation of a passive surface layer of chromium
oxide on stainless steel handrails protects the metal from corrosive
media in everyday usage and surroundings. The alloys' resistance to
various chemical solutions is too complex to cover fully here; Results
from testing most stainless steel alloys extensively in atmospheres
around Europe & the United States, show that, in a few years at
most, both rust and white corrosion products form on all stainless
steels, even those that were perfectly clean at the beginning of the
tests. If the stainless steel handrails and stainless steel railings
are kept clean, it will not form either corrosion product for many,
many years. This stresses that regular cleaning of the stainless steel
balustrades is essential. Many different mechanisms can play a role in
forming these corrosion products. In some cases, redeposition after
dissolution from the alloy surface leaves ions on the steel's surface.
With the right conditions of heat and humidity, these ions combine with
oxygen and develop a corrosion product. Redeposition of iron ions leads
to rust spots; redeposition of chromium ions leaves a deposit of
chromium oxide, indicated by white spots having a matte finish on the
polished steel.
A particular area of severe importance and the area most responsible
for "rusting" or staining on stainless steel handrails is where welds
are incorporated, causing iron contamination. The use of non-stainless
steel processing and handling equipment. This is a frequent source of
contamination. Non-metallic contact materials and vacuum lifting
equipment should be used to avoid process contamination.
Handling or fabricating stainless steel on equipment, using tools
also used for non-stainless steels should be avoided. Working in
'mixed-metal' fabrication shops, without taking segregation and
cleaning precautions can result in contamination.
Cutting of stainless steel handrails or grinding debris from
non-stainless steels should not be allowed to settle on stainless steel
items. As soon as any of this contamination becomes wet, rust staining
will result.
Stainless steel balustrades, in particular when 316 (marine grade)
stainless alloy is used are relatively expensive and cost between £500
to £800 a meter.
Stainless steel railing are very aesthetic and can be finished is
various ways from a matt finish to a mirror polish. Many stainless
steel balustrades require posts and to connect the glass use glass
clamps which are sometimes considered unsightly by some.
