Weldable high-strength steel designed for hydraulic parts.(Metals)

A weldable steel with tensile strength of 650 MPa (94 ksi) has reportedly been developed for hydraulic applications by Ovako Steel, Hofors, Sweden. It has transverse Charpy impact toughness of 27 Joules at a temperature of -40[degrees]C (-40[degrees]F). The steel is the result of a precisely controlled steelmaking process that provides a high degree of cleanliness and reproducibility. The high internal pressures in hydraulic tubes leads to high stresses in both the longitudinal and the transverse directions. The tubes and bars for hydraulics must therefore have adequate strength ...