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Norm

ÖNORM EN ISO 7539-6

Issue date: 2012 01 01

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)

This part of ISO 7539 covers procedures for designing, preparing and using precracked specimens for investigating susceptibility to stress corrosion. It gives recommendat...
Withdrawn: 2018 11 15
This part of ISO 7539 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. Recommendations concerning notched specimens are given in Annex A. The term ¿metal¿ as used in this part of ISO 7539 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.
ÖNORM EN ISO 7539-6
2019 04 01
Corrosion of metals and alloys - Stress corrosion testing - Part 6: Preparation and use of precracke...
Norm
ÖNORM EN ISO 7539-6
2018 11 15
Corrosion of metals and alloys - Stress corrosion testing - Part 6: Preparation and use of precracke...
Norm
ÖNORM EN ISO 7539-6
2012 01 01
Corrosion of metals and alloys - Stress corrosion testing - Part 6: Preparation and use of precracke...
Norm
ÖNORM EN ISO 7539-6
2003 08 01
Corrosion of metals and alloys - Stress corrosion testing - Part 6: Preparation and use of pre-crack...
Norm
ÖNORM EN ISO 7539-6
1995 08 01
Corrosion of metals and alloys - Stress corrosion testing - Part 6: Preparation and use of pre-crack...
Norm
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Norm
ISO 7539-1:1987
Issue date : 1987 08 20
Corrosion of metals and alloys — Stress corrosion testing — Part 1: General guidance on testing procedures
Draft
ISO/DIS 7539-1
Issue date : 2011 10 20
Corrosion of metals and alloys — Stress corrosion testing — Part 1: General guidance on testing procedures
Norm
ISO 7539-1:2012
Issue date : 2012 12 14
Corrosion of metals and alloys — Stress corrosion testing — Part 1: General guidance on testing procedures
Norm
ISO 11782-2:1998
Issue date : 1998 07 16
Corrosion of metals and alloys — Corrosion fatigue testing — Part 2: Crack propagation testing using precracked specimens
Norm
ÖNORM EN ISO 7539-6
Issue date : 2018 11 15
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 7539-6:2018)