ESDU 02016:2013

$89.05

Fracture Toughness (KIc) Values of Some Cast Irons

Published By	Publication Date	Number of Pages
ESDU	2013-02	210

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Category: ESDU

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Description

ESDU 02016 provides both static and dynamic fracture toughness
data for over 150 specifications of cast iron in the grey, chilled,
white, malleable, ductile and compacted graphite forms. Also
included are detailed descriptions of the general nature of these
irons, and their respective fracture characteristics. Additionally,
the factors likely to influence a measured fracture toughness value
for a given material are considered, as are the peculiarities
experienced with fracture toughness testing of cast iron. The
fracture toughness data appearing in the Item fall within the
temperature ranges of interest for practical applications, with the
full brittle-to-ductile transition spectrum being considered for a
number of ductile irons. The applicability of the Barsom
Temperature Shift to static fracture toughness values for ductile
iron is also investigated. The Item contains an in-depth
statistical analysis, offering the user two methods for obtaining a
design allowable fracture toughness value with a prescribed level
of confidence. The first method is the result of studies of the
correlation between the fracture toughness of various forms of cast
iron and other parameters: hardness (white and grey cast irons),
tensile strength (grey cast iron), and temperature (ductile iron).
The second method is based on the provision of mean fracture
toughness values for each type of material, from which design
allowable values can be calculated. A worked example illustrates
the implementation of these techniques, and guidance is given on
the applicability of each method. Standard requirements for cast
iron compositions and mechanical properties are provided, and
discrepancies in cast iron fracture toughness measurements obtained
through the use of different variants of a standard test procedure
are considered.