This part of ISO 7539 covers procedures for conducting slow strain rate tests to examine the susceptibility of a metal to stress corrosion cracking, including hydrogen-induced damage. In this part of ISO 7539, the term “metal” also includes alloys. Slow strain rate testing is suitable for testing a variety of product forms, including sheet, bar, wire, strip and tube, as well as the assembled parts and welded joints of these products. Notched samples can be used as well as smooth samples. The real advantage of this test is the speed with which the susceptibility of a particular material/medium combination to stress corrosion cracking can be assessed.
EN ISO 7539-7:2005 Referenced Document
ISO 7539-1:1987 Corrosion of metals and alloys - Stress corrosion testing - Part 1: General guidance on testing procedures
ISO 7539-4:1989 Corrosion of metals and alloys - Stress corrosion testing - Part 4: Preparation and use of uniaxially loaded tension specimens
ISO 7539-6:2003 Corrosion of metals and alloys - Stress corrosion testing - Part 6: Preparation and use of pre-cracked specimens for tests under constant load or constant displacement
EN ISO 7539-7:2005 history
2005EN ISO 7539-7:2005 Corrosion of metals and alloys - Stress corrosion testing - Part 7: Method for slow strain rate testing
1995EN ISO 7539-7:1995 Corrosion of Metals and Alloys - Stress Corrosion Testing - Part 7: Slow Strain Rate Testing (ISO 7539-7 : 1989)