WYJ050-2002                     B61N-S

1. Application scope : this technology conditions apply to manufacture the steam turbine baffle ring, less than 150 mm thickness of B61N-S steel plates.

2. Of the steel plate size and shape, weight and deviation should be allowed to meet the provisions of GB709-88.

3. Technical requirements

3.1 the chemical composition of the steel plate (melting analysis) should be in accordance with table 1:

Chart 1  Chemical composition analysis (melting analysis)

       Wt％

3.2 delivery status: normalized and backfiring

3.3 the mechanical properties of the steel plate should comply with the provisions of the table 2

Chart 2   mechanical properties