ISO 22068:2012 PDF

Overview - ISO 22068:2012 for Sintered‑Metal Injection‑Moulded Materials

ISO 22068:2012 defines material specifications for sintered metal injection‑moulded (MIM) materials. It specifies required chemical composition, mechanical and physical properties, test methods and a designation system to help design and materials engineers specify MIM materials for components manufactured exclusively by the Metal Injection Moulding process. It does not apply to press‑and‑sinter, powder‑forging or other powder‑metallurgy routes.

Key topics and technical requirements

• Scope and intended use: Covers properties and specification data for MIM parts only; excludes other powder metallurgy routes.
• Chemical composition: Minimum/maximum limits for principal alloying elements; “other elements” listed as maximum by difference. Analysis methods reference international standards or mutually agreed methods.
• Mechanical properties: Minimum values given for tensile strength (Rm), 0.2% offset yield strength (Rp0.2) and elongation (A25) in as‑sintered and heat‑treated conditions. Tensile tests follow ISO 2740 and ISO 6892‑1.
• Density and porosity: Density measured per ISO 3369 or gas pycnometer (ASTM D2638/D4892). Typical MIM materials are processed to near full density and, unless otherwise specified, contain **