NB/T 20007.4-2012Stainless Steel for Pressurized Water Reactor Nuclear Power Plants - Part 4: Niobium Stabilized Austenitic Stainless Steel Forgings for the Shafts of Reactor Coolant Pumps (English PDF)

NB/T 20007.4-2012 is the English-translated version of 压水堆核电厂用不锈钢 第4部分：反应堆冷却剂泵轴用含铌稳定化奥氏体不锈钢锻件.

NB/T 20007.4-2012 is the Chinese energy industry standard that makes up Part 4 of the stainless steel series for pressurized water reactor nuclear power plants, dealing with niobium-stabilized austenitic stainless steel forgings for reactor coolant pump shafts.

It states the requirements for manufacturing, testing, inspection and acceptance of those forgings. The grade covered is 06Cr18Ni11Nb, worked into the shaft of the reactor coolant pump.

With the Chinese classification H43 and the international classification 77.140.85, it belongs with forgings for nuclear equipment. Chemical composition is determined by the GB/T 223 series of analytical methods for iron and steel, which the standard cites in depth. Issued on 19 October 2012, it has applied since 1 March 2013.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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