Overview
ISO 23694:2021 - Wrought magnesium and magnesium alloys - Extruded rods/bars and tubes - defines the technical conditions for inspection and delivery of wrought magnesium and magnesium-alloy extruded products for general engineering applications. The standard covers round, square and hexagonal extruded rods/bars and seamless round tubes, specifying requirements from alloy designation and temper through to packing, marking and storage.
Key Topics
- Scope and product definition: Applies to extruded rods/bars and seamless tubes for general engineering use; defines terms such as rod, bar, tube, sample, specimen and test piece.
- Alloy designation and temper: Lists permitted alloy symbols and tempers (examples include ISO‑MgAl4Zn (MAZ40), ISO‑MgMn2(A) (MM2a), ISO‑MgZn6Zr(A) (MZK60a) and several Mg‑Gd/Y‑based alloys MVW92, MVW93M, MVW94M).
- Production and manufacturing: Producer discretion on processes unless the order specifies otherwise.
- Quality control and inspection: Supplier responsibility for inspection and tests before shipment; purchaser may request inspection at the works.
- Chemical composition: Mandatory composition limits for listed alloys (with additional alloys covered by ISO 3116:2019); purchaser can request limits for other elements in the order.
- Dimensional tolerances and geometric requirements: Detailed tolerances for diameter/width across flats, circularity, corner radii, fixed lengths, squareness of cut ends and straightness tolerances (tables of values provided).
- Mechanical properties and surface finish: Requirements for tensile properties, surface condition, and other mechanical criteria as applicable.
- Test procedures and sampling: Sampling plans, specimen preparation, chemical analysis, tensile testing (per ISO 6892‑1), dimensional measurement, retest rules and test-report requirements.
- Marking, packing, transport and storage: Requirements for identification, protective packing, and handling to preserve product quality.
Applications and Who Uses It
ISO 23694:2021 is intended for anyone involved in the specification, supply, manufacture, inspection or procurement of wrought magnesium extrusions for general engineering applications. Typical users include:
- Manufacturers and extruders of magnesium rods, bars and tubes
- Material test laboratories and quality control teams
- Purchasing and procurement professionals specifying delivery conditions
- Design engineers and product developers who need compliant material specifications
Using the standard helps ensure consistent chemical composition, dimensional accuracy, mechanical performance, and reliable documentation for delivered magnesium products.
Related Standards
- ISO 3116:2019 - Wrought magnesium and magnesium alloys (general alloy definitions and limits)
- ISO 6892-1 - Metallic materials - Tensile testing - Part 1: Method of test at room temperature
Keywords: ISO 23694:2021, wrought magnesium, magnesium alloys, extruded rods, extruded bars, seamless tubes, inspection and delivery, dimensional tolerances, chemical composition, mechanical properties, test procedures.