SIST EN 546-3:2007

Overview

SIST EN 546-3:2007 is a European Standard developed by CEN that specifies the tolerances on dimensions for aluminium and aluminium alloy foils. This part of the EN 546 series focuses exclusively on the dimensional tolerances applicable to both single-rolled and double-rolled aluminium foil, ensuring consistency and quality in foil production and supply. The standard supports the technical conditions outlined in EN 546-1 by defining acceptable limits on foil thickness (gauge) and width.

Key Topics

• Scope: Applies to single and double-rolled aluminium and aluminium alloy foils manufactured according to EN 546-1.
• Tolerance on Gauge (Thickness):
  • For single measurements, single-rolled foil has a ±6% tolerance.
  • Double-rolled foil exhibits a slightly broader ±8% tolerance.
  • Average gauge tolerance decreases with increasing lot size-for example, for single-rolled foil, ±6% applies for lots up to 3,000 kg, tightening to ±4% for lots exceeding 10,000 kg.
  • Gauge can be measured using precise thickness instruments or the standardized weighing method to resolve disputes.
• Tolerance on Width:
  • Symmetrical and asymmetrical tolerances are defined.
  • Foils up to 1,000 mm width have a ±1 mm tolerance, while wider foils offer ±2 mm for symmetrical tolerance.
  • The tolerance scheme is the same for single-rolled and double-rolled foil.
• Weighing Method for Thickness:
  • Provides a formula-based procedure to calculate foil gauge by measuring mass, area, and known density.
  • Supports precise and dispute-proof thickness verification.
• Densities of Aluminium Alloys:
  • Table provided with standard densities for common aluminium alloys (e.g., EN AW-1050A with 2.70 g/cm³).
• Scope of Implementation:
  • The standard is mandatory for all CEN member countries, ensuring uniform dimensional quality in European markets.

Applications

• Manufacturing and Quality Control: SIST EN 546-3:2007 offers clear specifications for aluminium foil producers on dimensional limits, helping maintain product consistency.
• Procurement and Supply: Buyers and suppliers benefit from a common dimensional tolerance framework, facilitating contract clarity and reducing disputes.
• Industry Sectors:
  • Packaging: Ensures aluminium foil meets strict thickness criteria critical for protective barrier properties.
  • Electrical: Provides standards for foil used in capacitors and electronic components requiring precise dimensions.
  • Automotive and Aerospace: Guarantees consistent foil quality for lightweight and corrosion-resistant applications.
• Testing and Verification: The weighing method prescribed serves as an accurate referee procedure for dimensional verification where tolerance disputes occur.
• Standardization Alignment: Helps manufacturers comply with European harmonized standards, avoiding conflicting national tolerances.

Related Standards

• EN 546-1: Aluminium and aluminium alloys - Foil - Part 1: Technical conditions for inspection and delivery. EN 546-3 relies on EN 546-1 for general production and delivery requirements.
• EN 546-2: Mechanical properties of aluminium foil, covering physical and strength characteristics.
• EN 546-4: Special property requirements for aluminium foil, dealing with specific application needs.
• Other Aluminium Standards within CEN/TC 132: Provide complementary guidelines for aluminium product testing and quality.
• ISO Standards on aluminium alloys and testing: May be referenced for international alignment beyond Europe.

By adhering to SIST EN 546-3:2007, manufacturers and users of aluminium foil ensure dimensional quality that supports reliable performance and regulatory compliance in multiple industrial applications. This standard plays a crucial role in harmonizing aluminium foil dimensions throughout Europe, enhancing interoperability and customer satisfaction.