304NG Nuclear Grade Stainless Steel Tubes

304NG (Nuclear Grade) is new member of austenitic stainless steel in recently 20 years. The driving power is solve the accident of when 304 stainless steel apply in BWR (Boiling Water Reactor) appear the IGSCC (Inter-granular Stress Corrosion Cracking), enhance the security and reliability of nuclear reactor, and offer better material for pressure water nuclear reactor internal component. In the process of research and development, according to the sense of keep the strength of 304, and possess the inter-granular corrosion resistant properties of 304, meanwhile not deviation to long term work built the nuclear directive rules as research and development of  technical ideology.

Based on the fully consider the three prerequisite, by means of append appropriate amount of Nitrogen, increase the strength of stainless steel, improve the inter-granular corrosion resistant properties, increase the carbon content percentage to anti-allergy properties same with the super-austenitic stainless steel. Then produce 304NG stainless steel. In USA intitule 304NG (304 Nuclear Grade), in Japan is ST2LN, in France is Z2CN19-10, in China is Nitrogen Control 304.

In China, according to the requirement of nuclear project, based on the research of abroad, develop a new stainless steel grade – 304NG Stainless Steel

304NG stainless steel have the same technological properties with 304L, can machining to stainless steel plate, tubes, pipes, forging, bars, and successfully apply in the built of nuclear reactor project.

Chemical Composition
Resistance to Corrosion
Physical Properties
Mechanical Properties
Processing Properties