MATOCHA Karel MATERIAL AND METALURGICAL RESEARCH Ltd.

Determination of Critical Temperature of Brittleness t(k0) by Small Punch Tests

Co-authors FILIP Miroslav, STEJSKALOVÁ Šárka

CWA 15627 "Small Punch Test Method for Metallic Materials" Part B: A Code of Practice for Small Punch testing for tensile and Fracture Behaviour" describes the determination of yield and tensile strength, Fracture Appearance Transition Temperature and fracture toughness of the metallic materials. The present paper describes the procedure proposed for determination of critical temperature of brittleness t(k0) of tube plate of VVER 1000 high temperature heater of feed water made of 22K steel in 1998-1999.

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