API 2HGR42 steel plate is a steel plate with low-grade sulfide inclusions provided by chemical control methods, thereby reducing the possibility of lamellar tearing of API 2HGR42 steel plate in the joint weld area. The large sulfur content should be 0.006%. The suffix xls of the brand name, x means Is g, n, qt. The low nitrogen content to improve the notch toughness under aging-strain conditions, the maximum nitrogen content in melting analysis is 0.009%. The notch toughness requirement of API 2HGR42 steel plate at lower temperature: -67°F (-55°C) drop hammer test ‘unbreak’ or Charpy impact test.
Application range of API 2HGR42 steel plate:
API 2HGR42 steel plate is a carburized steel with good performance. It has high hardenability. After carburizing and quenching, it has a hard and wear-resistant surface and a tough core. API 2HGR42 steel plate has high low-temperature impact toughness and medium weldability. Good machinability after normalizing.
API 2HGR42 steel plate is widely used as carburized parts with small cross-sections and high-load quenched and tempered parts with large cross-sections, such as gears, shafts, main shafts, worms, sleeves of governors, friction wheels of transmissions, etc.
