ISO 23700:2021

Overview

ISO 23700:2021 - "Wrought magnesium and magnesium alloys - Rolled plates and sheets" - is an international material specification that defines the requirements for rolled magnesium and magnesium-alloy plates and sheets. The standard covers chemical composition, mechanical properties, dimensional and shape tolerances, heat treatment (tempers), and the technical conditions for inspection and delivery. It is intended for suppliers and purchasers of rolled magnesium products and for organizations that perform material qualification and quality control.

Key topics and requirements

• Scope and applicability: Applies to rolled magnesium and magnesium-alloy plates and sheets (definitions for sheet and plate given by thickness).
• Order/tender content: Orders must specify alloy designation, form (sheet or plate), temper, dimensions, tolerances, quantity, and requirements for certificates or special tests.
• Alloy and temper designation: Includes fixed alloy symbols and tempers (examples: O, H112, H×4, H×2, T5) and a table of common alloy grades (e.g., MAZ31, MAM61, MZK61) with applicable thickness ranges.
• Chemical composition: Composition limits are specified by alloy group (detailed in Table 2); purchasers can request limits for additional elements.
• Mechanical properties: Tensile properties and other mechanical requirements are specified, with sampling and retest procedures defined.
• Dimensional tolerances and flatness: Thickness, width and length tolerances and flatness criteria are provided (see Table 3 and Table 4); special tolerance arrangements can be agreed between supplier and purchaser.
• Production, quality control and inspection: Supplier responsibility for inspections and tests is defined; inspection documents include certificates of conformity, test reports and specific test reports.
• Test procedures: Sampling for chemical analysis and mechanical testing, and test methods such as chemical analysis, tensile testing (room temperature, per ISO 6892‑1), Erichsen test, dimensional measurement and surface finish assessment are specified.
• Marking, packing, transportation and arbitration tests: Requirements for marking, packing and dispute-resolution testing are included.

Applications and who uses it

ISO 23700 is used by:

• Material engineers and metallurgists for specifying and qualifying rolled magnesium materials.
• Manufacturers and suppliers of magnesium plates and sheets to ensure compliance with international delivery and inspection requirements.
• Purchasers and procurement teams who need to define contractual material requirements.
• Quality inspectors and testing laboratories performing chemical and mechanical verification. Typical industries that benefit from standardized rolled magnesium products include aerospace, automotive, electronics and other sectors where lightweight structural materials are required.

Related standards

• ISO 3116 - Wrought magnesium and magnesium alloys (reference for material requirements)
• ISO 6892‑1 - Metallic materials - Tensile testing - Part 1: Method of test at room temperature

Keywords: ISO 23700, wrought magnesium, magnesium alloys, rolled plates, sheets, chemical composition, mechanical properties, dimensional tolerances, heat treatment, inspection and delivery.