NM500 weight calculator plate weldability
on Steel Quality 500The quality of steel used in the construction of our buildings and other infrastructure is integral to the strength, longevity and safety of the structure. The key measure of quality for steel is its strength and its weldability, which need to be carefully managed to ensure that the finished steel will do its job safely and effectively.
The strength of steel is determined by its composition, which can be altered depending on the preferred use for the material. Carbon is the main component used for determining the steel grade which determines the strength of the metal. Manganese and silicon are also sometimes added for increased strength, although this may impact the metal's weldability.
Steel is weldable if it can form joints which are as strong and reliable as the steel itself. When welding metal together, the metal needs to be heated to around 1700° Celsius. It is then pressurized to shape them together in order to form a joint.
Welding steel is complicated as steel can lose its structural strength in the process. This is due to certain elements such as carbon and nitrogen in the steel that can evaporate during welding, resulting in a weaker joint than the original steel. The presence of these elements can also prevent a weld from properly adhering to the steel, creating an unreliable, possibly even dangerous, joint. For this reason, the selection of steel needs to take into account its weldability as well as its strength.
To ensure weldability, it is essential to control the composition of the steel and ensure that it contains only the required elements, such as carbon and manganese. Different alloys of steel, such as nickel and chromium, may be added to the steel depending on its intended purpose, however, care must be taken to ensure that these do not affect the weldability of the steel. It is also important to keep the level of impurities in the steel to a minimum, as excessive levels of sulfur, phosphorus and other impurities can also impact weldability.
Steel quality and weldability are both essential for any construction project. Knowing the right steel grade and controlling the composition of the steel and its impurities will ensure the strength, security and longevity of the structure. Steel companies such as ArcelorMittal have developed an online steel weight calculator which takes into account the various parameters to calculate the ideal steel grade and composition to use for a given application. This tool enables informed decisions to be made on the quality and weldability of the steel and can help ensure a safe and effective structure.
