Effects of Normalizing Temperature on Impact Toughness of Gas Cylinder Steel 34Mn2V

"Mechanical properties of 34Mn2V after being normalized at different temperatures had been measured,and the effects of resulting microstructure on impact toughness had been investigated Results from laboratory and industrial production indicated that impact toughness of 34Mn2V could be improved by using appropriate subcritical normalizing treat. 34Mn2V steels would have a good combination of high strength and improved toughness by after being normalized at lower temperature,and meet the requirements of specifications for high-pressure cylinder. "