ISO 6361-5:2011

Overview

ISO 6361-5:2011 - "Wrought aluminium and aluminium alloys - Sheets, strips and plates - Part 5: Chemical composition" specifies the chemical composition limits for wrought aluminium and aluminium alloys used in sheets, strips and plates. The standard provides the tabulated mass-fraction limits for individual alloys, rules for expressing and rounding composition values, and the sequence and format in which element limits are presented. ISO 6361-5:2011 aligns its composition limits with the Aluminum Association “Teal Sheets”; where values differ, the Aluminum Association registration controls.

Key topics and technical requirements

• Chemical composition table (Table 1): Lists alloy-by-alloy mass-fraction limits (percent by mass) for major alloying elements (Si, Fe, Cu, Mn, Mg, Cr, Zn, Ti, etc.), “Remarks”, “Others: each”, “Others: total” and aluminium remainder/minimum.
• Expression of limits:
  • Limits for impurities are expressed as a maximum.
  • Limits for alloying elements are shown as ranges (minimum) or as remainder for engineered alloys.
• Writing and decimal rules: Prescribes the number of decimal places to use depending on magnitude (e.g.,