EN ISO 7539-6:2011

Corrosion of metals and alloys - Stress corrosion testing - Part 6: Preparation and use of precracked specimens for tests under constant load or constant displacement (ISO 7539-6:2011)

Publication date:   Dec 16, 2011

General information

99.60 Withdrawal effective   Sep 26, 2018

CEN

CEN/TC 262 Metallic and other inorganic coatings, including for corrosion protection and corrosion testing of metals and alloys

European Norm

77.060   Corrosion of metals

Buying

Withdrawn

Language in which you want to receive the document.

Scope

ISO 7539-6:2011 covers procedures for designing, preparing and using precracked specimens for investigating susceptibility to stress corrosion. It gives recommendations for the design, preparation and use of precracked specimens for investigating susceptibility to stress corrosion.
The term "metal" as used in ISO 7539-6:2011 includes alloys.
Because of the need to confine plasticity at the crack tip, precracked specimens are not suitable for the evaluation of thin products, such as sheet or wire, and are generally used for thicker products including plate bar and forgings. They can also be used for parts joined by welding.
Precracked specimens can be loaded with equipment for application of a constant load or can incorporate a device to produce a constant displacement at the loading points. Tests conducted under increasing displacement or increasing load are dealt with in ISO 7539-9.
A particular advantage of precracked specimens is that they allow data to be acquired from which critical defect sizes, above which stress corrosion cracking can occur, can be estimated for components of known geometry subjected to known stresses. They also enable rates of stress corrosion crack propagation to be determined. The latter data can be taken into account when monitoring parts containing defects during service.

Life cycle

PREVIOUSLY

Replaces
EN ISO 7539-6:2003

NOW

WITHDRAWN
EN ISO 7539-6:2011
99.60 Withdrawal effective
Sep 26, 2018

REVISED BY

PUBLISHED
EN ISO 7539-6:2018