What is the relationship between Charpy impact energy and Charpy lateral expansion for austenitic stainless steels and duplex stainless steels?

TWI Frequently asked questions

For full-size 10 x 10mm specimens, the relation between Charpy impact energy and Charpy lateral expansion is shown in Fig.1. for duplex and super duplex ^[1] and austenitic stainless steel ^[2].

Fig.1 Charpy impact energy, J

Up to a Charpy impact energy of 100J, the corresponding lateral expansion can be approximated by:

LE(mm) = Charpy energy (J)/100

For higher Charpy energies, a fit to the data is given in Fig.1.

References

1. C S Wiesner, 'Toughness requirements for duplex and super duplex stainless steels'. Duplex Stainless Steels '97. Proceedings of the 5 ^th World Conference. Maastricht, The Netherlands, 21-23 October 1997. Book 2, p.979-990. Zutphen, KCI Publishing, 1997.
   
   
2. J Honeycombe, J A Barlow and T G Gooch: 'Welding austenitic steel and high completion rate processes: submerged arc welding'. TWI Research Report 155/1981, August 1981 (only available to TWI Industrial Members).

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