DIN EN ISO 7539-9:2008
Corrosion of metals and alloys - Stress corrosion testing - Part 9: Preparation and use of pre-cracked specimens for tests under rising load or rising displacement (ISO 7539-9:2003); German version EN ISO 7539-9:2008

Standard No.

DIN EN ISO 7539-9:2008

Release Date

2008

Published By

German Institute for Standardization

Status

Be replaced 2020-08

Replace By

DIN EN ISO 7539-9:2020

Latest

DIN EN ISO 7539-9:2008

DIN EN ISO 7539-9:2020

DIN EN ISO 7539-9:2021-11

Replace

DIN EN ISO 7539-9:2007

Scope

1.1 This part of ISO 7539 covers procedures for designing, preparing and using pre-cracked specimens for investigating the susceptibility of metal to stress corrosion cracking by means of tests conducted under rising load or rising displacement. Tests conducted under constant load or constant displacement are dealt with in ISO 7539-6. The term "metal" as used in this part of ISO 7539 includes alloys. 1.2 Because of the need to confine plasticity to the crack tip, pre-cracked 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. 1.3 Pre-cracked specimens may be stressed quantitatively with equipment for application of a monotonically increasing load or displacement at the loading points. 1.4 A particular advantage of pre-cracked specimens is that they allow data to be acquired from which critical defect sizes, above which stress corrosion cracking may 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. Q 1.5 A principal advantage of the test is that it takes into account the potential impact of dynamic straining on the threshold for stress corrosion cracking. 1.6 At sufficiently Iow loading rates, the KiSCC determined by this method can be less than or equal to that obtained by constant load or displacement methods and can be determined more rapidly.

DIN EN ISO 7539-9:2008 Referenced Document

• ISO 11782-2:1998 Corrosion of metals and alloys - Corrosion fatigue testing - Part 2: Crack propagation testing using precracked specimens
• ISO 7539-1:1987 Corrosion of metals and alloys - Stress corrosion testing - Part 1: General guidance on testing procedures
• ISO 7539-6 Corrosion of metals and alloys — Stress corrosion testing — Part 6: Preparation and use of precracked specimens for tests under constant load or constant displacement — Amendment 1*， 2024-02-19 Update
• ISO 7539-7 Corrosion of metals and alloys - Stress corrosion testing - Part 7: Method for slow strain rate testing

DIN EN ISO 7539-9:2008 history

• 2021 DIN EN ISO 7539-9:2021 Corrosion of metals and alloys - Stress corrosion testing - Part 9: Preparation and use of pre-cracked specimens for tests under rising load or rising displacement (ISO 7539-9:2021); German version EN ISO 7539-9:2021
• 2020 DIN EN ISO 7539-9:2020 Corrosion of metals and alloys - Stress corrosion testing - Part 9: Preparation and use of pre-cracked specimens for tests under rising load or rising displacement (ISO/DIS 7539-9:2020); German and English version prEN ISO 7539-9:2020
• 2008 DIN EN ISO 7539-9:2008 Corrosion of metals and alloys - Stress corrosion testing - Part 9: Preparation and use of pre-cracked specimens for tests under rising load or rising displacement (ISO 7539-9:2003); German version EN ISO 7539-9:2008
• 0000 DIN EN ISO 7539-9:2007