ISO 5832-7-2024 PDF

Full title and description

ISO 5832-7:2024 — Implants for surgery — Metallic materials — Part 7: Forgeable and cold-formed cobalt‑chromium‑nickel‑molybdenum‑iron alloy. This International Standard specifies required characteristics and corresponding test methods for a forgeable and cold‑formed Co‑Cr‑Ni‑Mo‑Fe alloy intended for the manufacture of surgical implants.

Abstract

This document defines chemical composition limits, microstructural requirements and mechanical property criteria, together with the relevant sampling and test methods, for a forgeable and cold‑formed cobalt‑chromium‑nickel‑molybdenum‑iron alloy used in surgical implant manufacturing. It includes the note that mechanical properties measured on finished products can differ from those specified for test specimens.

General information

• Status: Published.
• Publication date: April 2024 (Edition 4, published 2024‑04).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 11.040.40 — Implants for surgery, prosthetics and orthotics.
• Edition / version: Edition 4 (2024).
• Number of pages: 3 pages (concise technical specification).

Scope

Specifies the characteristics of forgeable and cold‑formed cobalt‑chromium‑nickel‑molybdenum‑iron alloy and the corresponding test methods to be used when producing material for surgical implants. The standard applies to the alloy in forms suitable for forging and cold forming used in implant manufacture; it does not guarantee that finished‑product properties will match specimen test values.

Key topics and requirements

• Chemical composition limits for the Co‑Cr‑Ni‑Mo‑Fe alloy (elemental ranges and impurities control).
• Microstructure requirements (grain size, inclusion content and acceptable metallurgical state).
• Mechanical property criteria (tensile strength, yield, elongation and relevant test conditions).
• Specified sampling and specimen preparation for mechanical and metallographic tests.
• Defined test methods and acceptance criteria for conformity assessment of the material supplied for implants.
• Note that mechanical properties measured on finished implants may differ from those of test specimens.

Typical use and users

Used by medical device and orthopaedic implant manufacturers, materials and metallurgical testing laboratories, contract manufacturers that forge or cold‑form implant components, regulatory and quality teams assessing material conformity, and standards committees referencing material specifications for surgical implants.

Related standards

Part of the ISO 5832 series (Implants for surgery — Metallic materials). Closely related parts include ISO 5832‑1, ‑2, ‑3, ‑4, ‑5, ‑6, ‑8, ‑9, ‑10, ‑11, ‑12, etc.; users commonly consult adjacent parts for alternative implant alloys and comparability with ASTM equivalents where applicable.

Keywords

cobalt‑chromium alloy, Co‑Cr‑Ni‑Mo‑Fe, surgical implants, metallic biomaterials, forging, cold forming, test methods, chemical composition, microstructure, mechanical properties, ISO 5832 series.

FAQ

Q: What is this standard?

A: ISO 5832‑7:2024 is an international standard that defines the requirements and test methods for a forgeable and cold‑formed cobalt‑chromium‑nickel‑molybdenum‑iron alloy intended for surgical implants.

Q: What does it cover?

A: It covers chemical composition limits, microstructural requirements, mechanical properties, sampling and specific test methods used to verify the alloy material supplied for implant manufacture; it also notes that finished‑product properties may differ from specimen values.

Q: Who typically uses it?

A: Implant manufacturers, materials testing labs, quality/regulatory teams, forging and cold‑forming shops producing implant components, and standards bodies.

Q: Is it current or superseded?

A: Current — ISO 5832‑7:2024 is the published (Edition 4) version from April 2024 and replaces the previous 2016 edition.

Q: Is it part of a series?

A: Yes — it is part of the ISO 5832 series (Implants for surgery — Metallic materials), a multi‑part family of standards each specifying requirements for different implant alloys.

Q: What are the key keywords?

A: cobalt‑chromium, Co‑Cr‑Ni‑Mo‑Fe, implant alloy, forging, cold forming, metallic biomaterial, test methods, ISO 5832.