DIN EN ISO 20728:2018
Corrosion of metal and alloys - Determination of resistance of magnesium alloys to stress corrosion cracking (ISO 20728:2018); German version EN ISO 20728:2018

Standard No.

DIN EN ISO 20728:2018

Release Date

2018

Published By

German Institute for Standardization

Status

Be replaced

Replace By

DIN EN ISO 20728:2018-12

Latest

DIN EN ISO 20728:2018-12

Replace

DIN EN ISO 20728:2017

Scope

This document specifies a method for the determination of resistance to stress corrosion cracking (SCC) of magnesium alloys intended for use in structural applications (such as magnesium front end, gearbox and clutch housing units, steering column parts, shift actuators, valve covers and housings, brackets and intake manifold blades, electronic devices, power tools and medical equipment). The method allows determination of the resistance to SCC as a function of the chemical composition, the method of manufacture and heat treatment of magnesium alloys. The document is applicable to cast and wrought magnesium alloys in the form of castings, semi-finished products, parts and weldments and covers the method of sampling, the types of specimens, the loading procedure, the type of environment and the interpretation of results. The document allows assessment of the relative performance of materials and products in environments containing chlorides or sulphates, provided that the failure mechanism is not changed, but does not qualify a material or product for service application.

DIN EN ISO 20728:2018 Referenced Document

• DIN EN ISO 7539-1:2013 Corrosion of metals and alloys - Stress corrosion testing - Part 1: General guidance on testing procedures (ISO 7539-1:2012); German version EN ISO 7539-1:2012
• DIN EN ISO 7539-2:1995 Corrosion of metals and alloys - Stress corrosion testing - Part 2: Preparation and use of bent-beam specimen (ISO 7539-2:1989); German version EN ISO 7539-2:1995
• DIN EN ISO 7539-3:1995 Corrosion of metals and alloys - Stress corrosion testing - Part 3: Preparation and use of U-bend specimens (ISO 7539-3:1989); German version EN ISO 7539-3:1995
• DIN EN ISO 7539-4:1995 Corrosion of metals and alloys - Stress corrosion testing - Part 4: Preparation and use of uniaxially loaded tension specimens (ISO 7539-4:1989); German version EN ISO 7539-4:1995
• DIN EN ISO 7539-5:1995 Corrosion of metals and alloys - Stress corrosion testing - Part 5: Preparation and use of C-ring specimens (ISO 7539-5:1989); German version EN ISO 7539-5:1995
• DIN EN ISO 7539-6:2018 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); German version EN ISO 7539-6:2018
• DIN EN ISO 7539-7:2005 Corrosion of metals and alloys - Stress corrosion testing - Part 7: Method for slow strain rate testing (ISO 7539-7:2005); German version EN ISO 7539-7:2005
• DIN EN ISO 8044:2015 Corrosion of metals and alloys - Basic terms and definitions (ISO 8044:2015); Trilingual version EN ISO 8044:2015
• DIN EN ISO 8407:2014 Corrosion of metals and alloys - Removal of corrosion products from corrosion test specimens (ISO 8407:2009); German version EN ISO 8407:2014
• ISO 7539-1:2012 Corrosion of metals and alloys - Stress corrosion testing - Part 1: General guidance on testing procedures
• ISO 7539-2:1989 Corrosion of metals and alloys - Stress corrosion testing - Part 2: Preparation and use of bent-beam specimens
• ISO 7539-3:1989 Corrosion of metals and alloys; stress corrosion testing; part 3: preparation and use of U-bend specimens
• ISO 7539-4:1989 Corrosion of metals and alloys - Stress corrosion testing - Part 4: Preparation and use of uniaxially loaded tension specimens
• ISO 7539-5:1989 Corrosion of metals and alloys - Stress corrosion testing - Part 5: Preparation and use of C-ring specimens
• ISO 7539-6:2018 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 7539-7:2005 Corrosion of metals and alloys - Stress corrosion testing - Part 7: Method for slow strain rate testing
• ISO 8044:2015 Corrosion of metals and alloys - Basic terms and definitions
• ISO 8407:2009 Corrosion of metals and alloys - Removal of corrosion products from corrosion test specimens

DIN EN ISO 20728:2018 history

• 2018 DIN EN ISO 20728:2018-12 Corrosion of metal and alloys - Determination of resistance of magnesium alloys to stress corrosion cracking (ISO 20728:2018); German version EN ISO 20728:2018
• 2018 DIN EN ISO 20728:2018 Corrosion of metal and alloys - Determination of resistance of magnesium alloys to stress corrosion cracking (ISO 20728:2018); German version EN ISO 20728:2018
• 1970 DIN EN ISO 20728 E:2017-05 Corrosion of Metals and Alloys Determination of Resistance to Stress Corrosion Cracking of Magnesium Alloys (Draft)
• 2017 DIN EN ISO 20728 E:2017 Draft Document - Corrosion of metal and alloys - Determination of resistance of magnesium alloys to stress corrosion cracking (ISO/DIS 20728:2017); German and English version prEN ISO 20728:2017