Q550E is a low weld crack sensitivity high-strength steel plate, the specified thickness between 5mm-100mm, with high strength, good toughness, good low-temperature toughness, processing performance and good welding performance, wear-resistant, corrosion-resistant and so on.
Q550E adopts electric furnace steelmaking, made from scrap iron steelmaking, steel quality is pure, steel plate is poured with steel, cooled and pressed into flat steel. It is flat, rectangular, and can be rolled directly or sheared from a wide steel strip. Steel plate by thickness, thin steel plate <8 mm (the thinnest 0.2 mm), medium-thick steel plate 8 ~ 60 mm, extra-thick steel plate 60 ~ 120 mm.
Q on behalf of the yield strength of steel, "yield" character in the Chinese pinyin alphabet of the first letter; 550 on behalf of the yield strength value of metallurgical, in MPa; E on behalf of the quality level of E (grades are divided into C, D, E).
Q550E steel plate implementation standards: the implementation of GB/T18979 standard.
Q550E steel plate delivery state: steel plate is delivered in normalised, tempered and quenched state, and the delivery state can also be specified according to technical requirements.
Q550E steel plate thickness direction performance requirements: Z15, Z25, Z35.
Q550E steel plate flaw detection requirements: one probe, two probe, three probe.
