Q690R steel plate is a kind of tempered high-strength steel plate, Q690R is a new grade, the implementation of the new national standard GB/T713.6-2023, can be rolled. Delivery status: quenched and tempered tempered state, tempering temperature of not less than 600 ℃, the same grade and Q690DR (-50 ℃ impact).
Q690R brand name expression:
Q - a yield strength "yield" the first letter of the word hanyu pinyin;
690 - the lower limit of the yield strength of the provisions of the lower value, the unit is MPa (MPa);
R - pressure vessel "Rong" of the first letter of the hanyu pinyin.
Q690R steel plate has high strength, high toughness, fatigue resistance, impact resistance and other excellent mechanical properties. Its tensile strength of 690MPa or more, yield strength of 580MPa or so, elongation of 16% or more. After certain heat treatment process, its strength and toughness can be further improved.
Because of its excellent mechanical properties and welding performance, Q690R steel plate is widely used in construction, bridges, ships, vehicles, pressure vessels and other fields. In the field of construction, it can be used in the manufacture of high-rise buildings, large-span bridges and other structures; in the field of ships, it can be used in the main structure of ships, pressure vessels, etc.; in the field of vehicles, it can be used in railroad vehicles, automobile bodies, etc.; in the field of pressure vessels, it can be used in the manufacture of large-scale storage tanks, reactors and other equipment.
