Selection of steel grades and surface finishes for Stainless steel facades, structural components, and civil engineering. Selection of steel grades for components working at high temperatures.
Stainless steel facades, structural components, and civil engineering.
With stainless steel you can get a material that lasts for a long time, and the wide range of available surface finishes means that you can have a look that will satisfy your aesthetic requirements. But to get the optimal cost of material in combination with a long life and minimal maintenance it is important to specify the correct grade already in the specifications.
There are more than 200 types of stainless steel to choose from different suppliers. The geographical location and design of the structure plays a major role in the choice of steel grade. The range of surfaces is greater than the number of grades. Surface smoothness is almost as important the steel grade properties for visible components exposed to the elements. This applies for example to facades, where the surface must be aesthetically pleasing for a long time. So if the aesthetic demands are high, it is important that the surface is correctly specified correctly in the specifications. Generally speaking, one can say that the smoother the surface is the lower the staining potential and less risk of corrosion or discoloration. If you do not choose standard surfaces there are opportunities to more accurately specify the surface properties.
It is usually the architect who chooses a surface finish from aesthetic preferences. The person that then specifies the material in the specifications must be observant of the environment in which the steel will sit in and choose the type of steel that is appropriate in conjunction with the selected surface finish. A direct contact between stainless steel and other types of material in humid environments may mean that the less noble material corrodes. It is therefore important to choose the right material also for mounting parts, e.g. screws and bolts.
The tender should always specify a steel specification according to international standards, e.g. EN, ASTM, or the material supplier’s name of the steel.
Selection of “modern” stainless steel provides opportunities for cost savings!
Opportunities to specify new types of stainless steels for the construction sector have increased in recent years thanks to the availability of so-called Duplex stainless steels. The range of these steels from different vendors is increasing every year.
Interesting applications are primarily larger supporting structures, such as beams for bridge construction and reinforcement.
The Duplex steels properties are characterized by high strength combined with good resistance to corrosion. This means in practice that one can use thinner dimensions compared to the traditionally specified stainless steels. This saves weight and therefore investment costs.
Avesta Steel Design can give you advice on the choice of materials and surfaces for construction applications.
Selection of steel grades for components working at high temperatures.
Also here there are a lot of steel grades to choose from. The steel grade selection is not only decided by the working temperature. One can say that high temperatures start from 550 C. To decide a suitable grade one must know the environment (gas) the component should be working in. Also other types of process information including temperature variations must be known.
Avesta Steel Design can give you advice about material selection and construction for high temperature applications.
IMPORTANT MESSAGE - PLEASE READ CAREFULLY: Advice and assistance is provided in good faith without any undertaking, representation or warranty and Avesta Steel Design will obtain no liability - neither compensatory or consequential - for advice or assistance given.