Overview
EN ISO 11846:2008 is an international standard developed by CEN, adopted from ISO 11846:1995, that specifies methods for determining the resistance to intergranular corrosion of solution heat-treatable aluminium alloys. This standard applies to both cast and wrought aluminium alloys in various forms, including castings, forgings, plates, sheets, extrusions, and semi-finished or finished parts without protective coatings. By defining standardized testing procedures, EN ISO 11846:2008 enables manufacturers and users to perform comparative assessments of alloy grades and thicknesses based on chemical composition, manufacturing processes, and thermal treatment quality.
Key Topics
Applications
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Quality Control in Aluminium Manufacturing
- Validates the quality of solution heat treatment in aluminium alloy processing.
- Detects manufacturing defects that increase susceptibility to intergranular corrosion.
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Material Selection and Comparative Assessment
- Enables comparison of corrosion resistance among different aluminium alloy grades.
- Assists in selecting alloys suitable for specific environmental and service conditions where intergranular corrosion is of concern.
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Design and Engineering
- Supports design decisions by providing reliable corrosion data for solution heat-treatable aluminium components, improving safety and longevity.
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Research and Development
- Facilitates development of new aluminium alloys or heat treatment methods by standardized corrosion sensitivity testing.
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Corrosion Testing Laboratories
- Provides standardized test protocols to ensure consistent, repeatable evaluation across labs worldwide.
Related Standards
- ISO 8044:1989 - Vocabulary related to corrosion of metals and alloys, defining terms used in EN ISO 11846:2008.
- ISO 8407:1991 - Guidelines for removal of corrosion products from test specimens.
- ISO 3696:1987 - Specifications for water quality used in analytical laboratory testing, relevant for solution preparation.
- ASTM G3-89 - Conventions applicable to electrochemical corrosion measurements, including anodic polarization.
- ASTM G110-92 - Practice for evaluating intergranular corrosion resistance of heat-treatable aluminium alloys.
- Various national and military standards addressing aluminium alloy corrosion testing, including MIL-H-6088F and GOST 9.021-88.
Keywords: intergranular corrosion testing, solution heat-treatable aluminium alloys, corrosion resistance, aluminium alloy corrosion, EN ISO 11846:2008, metallographic examination, heat treatment quality, corrosion sensitivity, aluminium alloy standards, corrosion test methods.
