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U.S. Department of Energy
Office of Scientific and Technical Information

Mechanical properties of ASTM A508 Class 4 steel used in the LWBR closure head and support flange (LWBR Development Program)

Technical Report ·
OSTI ID:6546067
The LWBR closure head and support flange are manufactured from forgings of ASTM A508 Class 4 steel rather than the ASTM A508 Class 2 forging material more commonly used in reactor vessels and closure heads. Forgings involved were approximately 300,000 pounds and 46,000 pounds. The extensive material test program conducted on ASTM A508 Class 4 LWBR forgings is described. The results of the tests confirm that the A508 Class 4 material used for the LWBR forgings has been quite good through thickness, fracture toughness, and strength properties and fully meet all specified requirements.
Research Organization:
Bettis Atomic Power Lab., West Mifflin, PA (USA)
DOE Contract Number:
EY-76-C-11-0014
OSTI ID:
6546067
Report Number(s):
WAPD-TM-1214
Country of Publication:
United States
Language:
English