ISO 6363-3:2022

Wrought aluminium and aluminium alloys - Cold-drawn rods/bars, tubes and wires - Part 3: Tolerances on form and dimensions for drawn rods/bars and wires

This document specifies tolerances on form and dimensions for wrought aluminium and aluminium alloy drawn round bars and wires having diameters in the range of from 1 mm to 100 mm inclusive. The tolerances on diameter specified in this document are symmetric plus and minus tolerances. For wires, this document does not apply to electrical, welding and aeronautical purposes. For drawn bars, 4.1 to 4.5 apply, and only 4.1 and 4.2 apply to drawn wires.

Aluminium et alliages d'aluminium corroyés — Barres, tubes et fils étirés à froid — Partie 3: Tolérances sur la forme et les dimensions pour les barres et fils étirés

General Information

• Status: Published
• Publication Date: 30-Jun-2022
• ICS: 77.150.10 - Aluminium products
• Technical Committee: ISO/TC 79/SC 6 - Wrought aluminium and aluminium alloys
• Drafting Committee: ISO/TC 79/SC 6 - Wrought aluminium and aluminium alloys
• Current Stage: 6060 - International Standard published
• Start Date: 01-Jul-2022
• Due Date: 05-Apr-2023
• Completion Date: 01-Jul-2022

Relations

• Revises: ISO 6363-3:2012 - Wrought aluminium and aluminium alloys - Cold-drawn rods/bars, tubes and wires - Part 3: Drawn round bars and wires - Tolerances on form and dimensions (symmetric plus and minus tolerances on diameter)
• Effective Date: 23-Apr-2020

Overview

ISO 6363-3:2022 specifies tolerances on form and dimensions for cold‑drawn round wrought aluminium and aluminium‑alloy rods/bars and wires with diameters from 1 mm to 100 mm. It sets dimensional tolerance options (symmetric plus/minus or minus‑only), defines how to measure circularity, straightness, fixed‑length tolerances and squareness of cut ends, and clarifies scope limits (for example, drawn wires for electrical, welding and aeronautical purposes are excluded). Parts 4.1–4.5 apply to drawn bars; only 4.1 and 4.2 apply to drawn wires.

Key Topics and Requirements

• Diameter tolerances (4.1)
  • Diameter tolerance tables provide symmetric plus/minus options or minus‑only options depending on purchaser/supplier agreement.
  • Representative values: e.g., 1–3 mm: ±0.03 mm (or −0.06 mm minus only); 80–100 mm: ±0.20 mm (or −0.35 mm minus only).
• Circularity (4.2)
  • Measured as the difference between maximum and minimum diameters in one cross‑section.
  • Permissible circularity is included in diameter tolerance and must not exceed half the specified diameter tolerance.
• Straightness (4.3)
  • Applies to bars 10–100 mm diameter (except tempers O and TX51).
  • Measured with the bar on a horizontal plate. Maximum deviation is limited (document specifies 2 mm per 1 000 mm total length, and ≤ 0.6 mm per 300 mm segment).
• Fixed lengths (4.4)
  • Tolerance on fixed lengths increases with length; example tolerance increments shown in the standard (e.g., examples range from +4 mm up to +12 mm depending on length bracket for 10–100 mm diameters).
• Squareness of cut ends (4.5)
  • Squareness must be within half the fixed‑length tolerance (e.g., if a fixed‑length tolerance is +12 mm, squareness tolerance is 6 mm).

Applications

• Use ISO 6363-3:2022 to:
  • Define procurement and acceptance criteria for cold‑drawn aluminium rods/bars and wires.
  • Set inspection and quality control procedures in manufacturing and finishing operations.
  • Support engineering drawings, tolerance stacking and fit/interference calculations where precise form and dimension control are required.
  • Inform laboratory measurement methods and certification of supplied materials.

Who Would Use This Standard

• Aluminium mills and cold‑drawing manufacturers
• Quality and inspection engineers
• Purchasers and specification writers for components and raw material
• Test laboratories and compliance officers
• Design and metallurgical engineers working with wrought aluminium alloys

Related Standards

• ISO 6363-1: Technical conditions for inspection and delivery (normative reference)
• See the broader ISO 6363 series for other parts covering tubes, technical delivery conditions and related requirements.

For procurement or formal compliance, obtain the complete ISO 6363-3:2022 text from ISO or your national standards body to ensure accurate application of tables, figures and measurement procedures.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 6363-3
Second edition
2022-07
Wrought aluminium and aluminium
alloys — Cold-drawn rods/bars, tubes
and wires —
Part 3:
Tolerances on form and dimensions
for drawn rods/bars and wires
Aluminium et alliages d'aluminium corroyés — Barres, tubes et fils
étirés à froid —
Partie 3: Tolérances sur la forme et les dimensions pour les barres et
fils étirés
Reference number
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ISO copyright office
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Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Tolerances on form and dimensions .1
4.1 Diameter . 1
4.2 Circularity . 2
4.3 Straightness . 2
4.4 Fixed lengths . 3
4.5 Squareness of cut ends . 3
iii
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