What is SA573 Grade 70 carbon steel structural equivalent JIS steel material

Vanadium is a weak deoxidizer. Adding vanadium into SA573 Grade 70 carbon steel structural steel can reduce the adverse effects of carbon and nitrogen, effectively improve the strength, but sometimes also increase the tendency of welding hardening, vanadium is also a commonly used trace alloy element.

Tianjin warehouse mainly stores steel plates and steel pipes. The monthly replenishment is about 12000 tons. Our inventory cycle is short and flexible. Shanghai warehouse mainly stores SA573 Grade 70 carbon steel structural ,steel plate and section steel. The average monthly purchase volume is about 15000 tons. The geographical location of the warehouse has greatly improved our performance in terms of transportation and delivery time.

The main uses of flat steel are as follows. First, flat steel is used as a raw material for processing steel plates, which is convenient for transportation, takes up a small space, and can save transportation costs. Second, SA573 Grade 70 carbon steel structural flat steel can be used as raw material for processing welded pipes. Flat steel can be a finished steel product, or it can be used as a billet for welded pipes and thin slabs for stacked sheets. Third, flat steel can be directly used as a steel structure. As a finished material, flat steel can be used for making hoop iron, tools and mechanical parts, and used as building frame structure and escalator in construction. Fourth, the flat steel has a smooth surface and a certain degree of beauty.

The mechanical properties of SA573 Grade 70 carbon steel structural, Q690E plate:
The thickness of Q690E plate is not more than 50mm, the yield strength is not less than 690MPa, the tensile strength is 770-940, and the elongation after fracture is not less than 14.
The thickness of Q690E plate is 50mm-100mm, the yield strength is not less than 650MPa, the tensile strength is 760-930, and the elongation after fracture is not less than 14.
The thickness of Q690E plate is 100mm-150mm, the yield strength is not less than 630MPa, the tensile strength is 710-900, and the elongation after fracture is not less than 14.