SIST EN 575:1998

Overview

EN 575:1995 - Aluminium and aluminium alloys: Master alloys produced by melting - Specifications is a European (CEN) standard that defines requirements for master alloys made by melting and intended for addition to aluminium melts. The standard covers classification and designation of master-alloy grades, the production conditions under which they are made, their required properties and the marking/identification used for traceability. (Referenced in some countries as SIST EN 575:1998; ICS 77.120.10.)

Key topics and requirements

• Scope and purpose: Specifies master alloys produced by melting used to adjust melt composition, control impurities, and influence the as-cast structure.
• Classification & designation: Defines how master-alloy grades are named and categorized so purchasers and producers can unambiguously identify product types.
• Production conditions: Sets expectations for manufacturing processes and environmental/handling aspects specific to master alloys produced by melting.
• Properties and quality: Describes required physical and chemical characteristics (composition control, impurity limits and functional performance criteria) that ensure consistent behavior when alloying melts.
• Marking and identification: Requires product marking and documentation for traceability, quality assurance and correct use in melting operations.
• Inspection and conformity: Implies the need for testing, inspection and acceptance criteria so suppliers and users can verify compliance.

Note: EN 575 provides specification-level requirements; it does not prescribe detailed processing parameters for downstream casting or heat treatment.

Applications and who uses it

• Foundries and aluminium casthouses: to select appropriate master alloys for alloying and impurity control during melting and casting.
• Aluminium producers and alloy manufacturers: for producing, certifying and labeling master-alloy batches that meet European specification requirements.
• Metallurgists and materials engineers: to ensure composition adjustments and grain/structure control meet product design and performance targets.
• Procurement and quality managers: to define purchase specifications, perform supplier assessments and maintain traceability of alloy additions.
• Laboratories and testing houses: for establishing acceptance tests and verifying conformity of supplied master alloys.

Related standards

• Other CEN/EN standards covering aluminium alloy compositions, testing methods and casting practices are typically used alongside EN 575 to define complete material qualification and production workflows.
• National adoptions (e.g., SIST EN 575) reflect the same technical requirements within local standards organizations.

Keywords: EN 575, master alloys, aluminium alloys, specifications, composition control, impurity control, as-cast structure, CEN standard, foundry, metallurgical specifications.