Low Alloy Steel Welding in Pre-Engineered Building Structures: Strength, Durability, and Versatility
Pre-engineered buildings and structures have emerged as a modern alternative to conventional construction. They use a combination of structural steel framing systems, metal roofing systems, and wall panels of different materials. Their components are designed at a manufacturing unit and then assembled at the construction site.
Their major applications are found in power plants, refineries, petrochemicals, and fertilizer plants to build warehouses, storage units, and small retail and commercial offices. They are also used for houses, living shelters, aircraft hangers, supermarkets, and petrol pumps.
Some of the reasons why pre-engineered buildings and structures are becoming popular are:
- Cost-effectiveness
- Reduction in construction time
- Versatility in architectural design
- High customization
- High durability
- Low-maintenance
- Sustainable
- Flexibility of expansion
All the benefits mentioned above are primarily due to the use of low alloy steel in construction. While there are as many as 3500 different grades of steel with unique properties, it is the low alloy steel that is mostly used in pre-engineered structures.
Understanding Low Alloy Steel
Low alloy steel is a type of metal mixed with a composition of steel and other metals such as copper, chromium, phosphorus, and nickel. It contains about 1-5% of alloying elements. The percentage of composition usually depends on the preferred mechanical properties the welder wants to get.
Low alloy steel grades list has the following classification:
Low carbon quenched and tempered steels
Bearing steels
Medium carbon ultra-high-strength steels
Heat-resistant chromium-molybdenum steels
High-strength low alloy steels provide better mechanical properties compared to carbon and other types of steel. In fact, high-strength low alloy steels can be substituted for other steels with minimal effort and redesign.
Benefits of High Strength Low Alloy Steel in Welding of Pre-Engineered Structures
- Rust and corrosion resistant
- High-yield strength
- Excellent strength-to-weight ratio
- Ability to withstand high temperatures
- Ductile and flexible
- Non-combustible and fire-resistant
- Oxidation resistant
- Hydrogen resistant
When properly designed and constructed, alloy steel can provide much-needed strength and durability to pre-engineered structures due to its properties. However, it is crucial to that use the right welding electrode for low alloy steel.
Flux Cored Arc Welding (FCAW) and Submerged Arc Welding (SAW) are commonly used welding methods in the construction of pre-building structures. If you are looking for low alloy consumables for these welding methods, you can explore various options D&H Secheron website. D&H Secheron is one of India’s leading welding consumables manufacturers. It offers a comprehensive range of welding solutions for every need, including pre-building structures.
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