WYJ13-98                   Corten B

1, the technology conditions equivalent the ASTM/A588M-87 Gr. A standard, can be used in making boiler component is not more than 200 mm in the special thick steel plates.

2, size, shape, weight and allowed deviation

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

3, technical requirements

3.1 chemical composition: chemical composition (melting analysis) should be in accordance with table 1.

Wt%    table 1

3.2 delivery status: the hot rolling

3.3 mechanical properties

3.3.1 the mechanical properties of the steel plate should comply with the regulations of the table 2.

Table 2

3.3.2 charpy (V type gap) impact energy value should calculated according to the arithmetic mean valueof a group of three sample single value, allow a single test is lowerthan specified value, but not less than 70% of thespecified value.