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P355NL1 low temperature pressure vessel steel

P355NL1 low temperature pressure vessel steel

P355NL1 low temperature pressure vessel steel


P355NL1 steel belongs low temperature pressure vessel steel. Its full name is normalized weldable fine grain steel, which is under EN10028 European standards and with good welding capacity and high resistance to brittle fracture ability. P355NL1 steel is mainly used in petroleum,chemical,power plants,boilers and other industries for the production of reactors,separators,oil and gas tanks,liquefied gas cylinders,nuclear reactor reactor shell,liquefied petroleum gas cylinders,hydropower stations,shell and other equipment and components.
Effect of Ultrasonic impact on fatigue performance of P355NL1 steel welded joints:
P355NL1 steel butt joint welding state of the conditions of fatigue limit of 227MPa,and the conditional fatigue limit of ultrasonic impact state is 293MPa.Compared with before treatment, the fatigue limit increased by about 30%. Under the same stress level,Ultrasonic impact state P355NL1 butt joint fatigue life of the solder joint is 12 to 15 times

 

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