ISO 7271-2011 PDF

Full title and description

ISO 7271:2011 — Aluminium and aluminium alloys — Foil and thin strip — Dimensional tolerances. This International Standard specifies dimensional (thickness and width) tolerances and preferred thicknesses for aluminium and aluminium-alloy foil and thin strip intended for general purposes, and gives information for ordering.

Abstract

ISO 7271:2011 defines preferred thicknesses and the permissible tolerances on thickness and width for aluminium foil and thin strip supplied in rolls. It covers double-rolled foil (one side matt, one side bright) and single-rolled foil/thin strip and includes requirements for information to be supplied when ordering and an annex identifying alloy groups for foil applications.

General information

• Status: Published.
• Publication date: June 2011 (Edition 2, published June 2011).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 77.150.10 (Aluminium products).
• Edition / version: Edition 2 (2011).
• Number of pages: 5 pages.

Scope

Applies to aluminium and aluminium-alloy foil and thin strip supplied in rolls for general purposes. The standard sets out preferred nominal thicknesses and corresponding tolerances and gives width tolerances for typical product types. It is applicable, inter alia, to double-rolled foil with thicknesses in the lower micrometre range and to single-rolled foil and thin strip in higher micrometre ranges (the published text lists the applicable thickness ranges and product categories). The document also specifies the information to be provided when ordering.

Key topics and requirements

• Preferred nominal thicknesses for foil and thin strip.
• Permissible thickness tolerances for the listed thickness classes.
• Permissible width tolerances for rolls of foil and thin strip.
• Information for ordering (designation of product, thickness, width, alloy group, surface finish where applicable, and any special requirements).
• Normative annex identifying alloy groups for foil applications.
• Applicability limits (product types supplied in rolls) and basic measurement/verification provisions for dimensional checks.

Typical use and users

Used by aluminium foil and thin-strip manufacturers, rolling mills, converters, suppliers and purchasers of aluminium foil products, quality/control laboratories, procurement/specification writers, product designers and standards committees. It is used to specify and verify dimensional acceptability in production, to prepare purchase orders and to harmonize commercial tolerances between suppliers and customers.

Related standards

ISO 7271:2011 replaces ISO 7271:1982 (withdrawn). Work has been recorded toward a multipart revision/series (committee drafts for parts intended to cover technical conditions for inspection and delivery and related topics) under ISO/TC 79/SC 6. Users should check whether newer parts or revisions have been published when preparing specifications.

Keywords

aluminium foil, thin strip, dimensional tolerances, thickness tolerances, width tolerances, preferred thicknesses, foil rolling, aluminium alloys, ordering information, ISO 7271.

FAQ

Q: What is this standard?

A: ISO 7271:2011 is an International Standard that specifies dimensional tolerances (thickness and width) and preferred thicknesses for aluminium and aluminium-alloy foil and thin strip supplied in rolls for general purposes.

Q: What does it cover?

A: It covers preferred nominal thicknesses and the permissible tolerances for those thicknesses, width tolerances, the types of foil/thin strip to which the tolerances apply (e.g., double-rolled and single-rolled products), and the information to be given when ordering. It includes an annex listing alloy groups relevant to foil.

Q: Who typically uses it?

A: Manufacturers, suppliers and purchasers of aluminium foil and thin strip, production and quality-control personnel, testing laboratories, design engineers, and standards/specification writers. It is referenced in purchase contracts and technical specifications to ensure compatible tolerances.

Q: Is it current or superseded?

A: ISO 7271:2011 is the published (current) edition issued in June 2011, replacing the 1982 edition. At committee level, multipart revisions have been developed as committee drafts intended to replace or expand the 2011 edition; users should confirm whether those parts or a later revision have been published before relying on the status for new procurements.

Q: Is it part of a series?

A: The standard has been the subject of work to develop a multipart series (e.g., ISO/CD 7271-1 and subsequent parts) to cover technical conditions for inspection and delivery and related topics; these committee drafts indicate a move toward a series-based structure under ISO/TC 79/SC 6. Check ISO committee outputs for published parts.

Q: What are the key keywords?

A: Aluminium foil, thin strip, dimensional tolerances, thickness tolerances, width tolerances, preferred thicknesses, foil specification, aluminium alloys.