Q490RW is a tempered high-strength steel plate for pressure equipment, a large oil storage tanks with steel plate, steel grade by the initial letter "Q" on behalf of the yield strength of the "yield", the minimum specified yield strength value, the minimum yield strength of pressure vessels, "R" or low-temperature pressure vessels, "low capacity" of the initial letter "DR". "R" or low-temperature pressure vessels "low capacity" of the initial letters of the Chinese pinyin "DR "Composition, temperature grade" L "and other components. For large wire energy welding requirements of steel, the above provisions of the grade after the addition of large wire energy welding on behalf of welding "Weld" word of the English word "Weld" the first letter "W", such as: Q490RW.
Q490RW steel plate mechanical properties and process properties:
Yield strength: ≥490MPa
Tensile strength: 610~730MPa
Post-break elongation A%: ≥17
Impact test: -20 ℃ impact absorption energy ≥ 80J
Bending test: 180 ° b = 2a when D = 3a
Non-destructive testing of Q490RW steel plate: ultrasonic testing of steel plate is carried out according to NB/T 47013.3, and the qualified level should not be lower than Grade I. If there are any special requirements, please specify them in the contract.
Q490RW steel plate applications: steel used in the manufacture of petrochemical, gas separation and gas storage and transport equipment such as pressure vessels. Requirements for adequate strength and toughness, good welding performance and hot and cold processing performance. Commonly used steel is mainly low alloy high strength steel and carbon steel.
