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Stainless Steel and Salt Corrosion: Coastal Applications

Stainless steel suppliers in Perth now fabricate a lot of stainless steel products for coastal applications due to their ability to resist corrosion. This makes stainless steel a natural for many coastal applications. Today, we would like to explain how stainless steel resists corrosion and why it is so great for coastal applications.

Stainless Steel For Coastal Applications

How Stainless Steel Resists Salt Corrosion

Rust is a substance called iron oxide. It occurs when iron reacts to oxygen in the air or in water and oxidises. Stainless steel has at least 10.5% chromium and some grades up to 18%. The chromium produces a different reaction with the oxygen and produces a different oxide which becomes a surface layer.

The oxide produced by the chromium is resistant to further oxidation. It also turns into a thin passive layer on the surface. This layer is thin, but it reforms if it is scratched or machined and still provides protection to the stainless steel surface. If nickel is added as in grades 304 and 316, it extends the passivity of the surface layer.

When molybdenum is added as in grade 316, it improves the passivity even more and makes stainless steel more resistant to sulfuric, acetic and sulferous acids, in addition to salt such as that in seawater. If the correct grade of stainless steel is used, there will be no corrosion.

Applications

There are numerous possible applications for stainless steel in coastal environments. Grade 316 is one of those more commonly used for salt corrosion. The Discovery Centre in Portland, which is the oldest town in Victoria, was made entirely of stainless steel and glass. It serves as a museum and as an information centre. It is on the coast and is often buffeted by waves 2-3m high in storms. It has been open for eight years.

Also in Victoria, the Geelong Carousel Pavilion is another impressive stainless steel project. It has been open for six years and has withstood the weather in fine form.

Call 1300 794 647 to learn more.

Grade 431 Stainless Steel and Its Uses

As stainless steel suppliers and fabricators in Perth, we have become experts on all things stainless steel. There are different grades of stainless steel for different uses. They all have different characteristics that make them unique. Here are some facts about Grade 431 stainless steel.

Uses of Grade 431 Stainless Steel

Grade 431 is a martensitic stainless steel. That means it can be hardened thermally. Grade 431 is less well-known than other grades, but is used in motors as shafts and fasteners. It is also used in the food processing industry for pumps and valves. It can be heated and cooled quickly by quenching, resulting in a hardness resembling that of a low alloy steel such as 4140. None of the austenitic grades can be hardened in this way.

Consequently, grade 431 stainless steel is one of the more versatile materials on the market. It combines high toughness and strength with above average corrosion resistance. Before hardening, it can be easily machined.

Composition

The main features of grade 431 are the inclusion of nickel and a high chromium content. The nickel makes grade 431 austenitic at high temperatures by countering the high chromium content. This allows it to be turned into a hard martensite when quenched.

Corrosion Resistance

The high chromium content makes grade 431 nearly as resistant to crevice, pitting and general corrosion as grade 304. This makes it ideal for use in the food and beverage industry. Of all the martensitic grades of stainless steel, grade 431 has the highest corrosion resistance. Corrosion resistance is at its greatest when grade 431 is hardened, tempered and has a smooth finish.

Grade 431 can be used with great success for boats in fresh water. Unfortunately, it doesn’t work well with seawater because of the salt content.

Heat Resistance

Grade 431 can withstand temperatures up to 700 °C, but are often permanently softened if they are exposed to temperatures more than 600 °C.

To learn more, call us today: 1300 794 647.

Fresh Out the Oven: Western Stainless and Muffin Break Dianella

Recently, our skills as stainless steel fabricators were put to good use in the Perth area by a restaurant called Muffin Break in Dianella. Muffin Break is a shop fitting job that is routinely performed by firm called Adform. Since we are the preferred stainless steel supplier for this Perth area firm, we manufacture all of the wall sheeting, oven and mixer alcoves, sinks and bench tops.

Western Stainless and Muffin Break Dianella

Adform constructs the kiosk in their own workshop to ensure that everything fits. Then, they send us their substrates so that we can clad them and weld the bowls in. Once we have completed our tasks, all they have to do is collect the alcoves, bench tops, wall cladding and wall shelves to take back to their workshop and reassemble.

This allows them to find any issues well before the installation and helps them deliver their work on time with minimum disruption to the shopping centre or venue where the installation takes place. The timely and accurate manner in which the stainless steel is fabricated and installed allows the business to open its doors to the public sooner.

Muffin Break

Muffin Break has been in Australia since 1989. They started out in Canada but Australia is now their most prolific country. They have a total of 275 locations around the world. 190 of them are in Australia and 37 are in New Zealand.

As you may guess from the name, Muffin Break bakes fresh muffins every morning, along with scones, pies, quiches and many other items. Their stainless steel not only needs to conform to strict sanitation requirements but also has to provide durability in extreme heat.

Western Stainless Solutions

Muffin Break is another in a long line of hospitality outlets we have been proud to serve. Owners of restaurants, bars, cafes and cafeterias all know they can depend on us to get it perfect and deliver it on time, every time.

Call 1300 794 647 today.