High strength structural steel
High strength structural steels include structural steels that exceed a yield strength of 355MPa. Typical mechanical values for the yield strength of high strength structural steels are usually between 500 MPa - 1300 MPa. In addition to yield strength, these steels usually have an impact toughness requirement of not less than 27J at -40°C. The advantage of high strength steel is that you can build a lighter structure and still maintain the desired strength compared to conventional structural steel. When designing high-strength steel structures, a number of points need to be considered.1. Elastic deflection2. Risk of failure, increased risk when using smaller dimensions3. The location of geometric irregularities and welded joints to reduce the risk of fatigue failure
The fundamental difference between high strength and extra high strength steels is the difference in microstructure.
Extra high strength structural steel as sheet metal
After rolling, the sheet goes on to a continuous controlled tempering process where rapid cooling can control the phase transformation that takes place in the sheet. The most common materials are classified according to their microstructure. Two phases, complex phases, multiple phases, TRIP, Martensite and press-hardened steel.
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Extra high strength steel - saves weight without reducing strength
Extra high strength steel is used in structures where you want to save weight without reducing strength. One example is safety parts in cars, such as reinforcements for B-pillars, side impact beams and bumpers.We offer large and small quantities with very good formability used in the manufacture of, for example:
- Crane arms
- Mining and construction machinery
- Bridge constructions
- Agricultural machinery