Skip to Main Content


Several ruptures took place in the front wall tubes of a water tube boiler. Some rupture samples showed ductile failure while others showed brittle failure. Specimens taken from the rupture where a thick edge had been produced, i.e., with little evidence of prior plastic deformation, showed a coarse microstructure indicative of gross overheating. The examination indicated that failure in the main resulted from gross overheating arising from water starvation as could have been due to a number of causes. The ruptures in some tubes were of the type commonly found in overheated tubes, the material being drawn out to a feather edge at the time of rupture. Other ruptures in the same and other tubes were of a more brittle type, this being associated with penetration of material by molten copper derived from scale.

You do not currently have access to this chapter.
Don't already have an account? Register

Rupture of Water Wall Tubes of a Boiler, ASM Failure Analysis Case Histories: Power Generating Equipment, ASM International, 2019,

Download citation file:

Close Modal

or Create an Account

Close Modal
Close Modal