Job Knowledge

摘要

The development and use of high strength low alloy (HSLA) steels has been driven by the need to reduce costs, the higher strength compared with a conventional carbon-manganese steel enabling thinner andjighter structures to be erected. The majority of these steels are to be found in structural applications; offshore structures, yellow goods, buildings, shipbuilding etc. Tensile strengths of up to 690MPa are achievable whilst still maintaining good weldability and high notch toughness, often better than 50J at -60°C.