MPIF Standard 35 is the primary material standard for MIM in North America and much of the global market. Published by the Metal Powder Industries Federation, it defines standard material designations and minimum property requirements for MIM materials.
What MPIF Standard 35 covers for MIM:| Section | Content | Example Entry |
|---|---|---|
| Material designations | Standard naming system | MIM-316L, MIM-17-4PH, MIM-FN02 |
| Chemical composition | Required elemental ranges | Cr: 16-18%, Ni: 10-14%, Mo: 2-3% for MIM-316L |
| Mechanical properties | Minimum UTS, yield, elongation, hardness | MIM-316L: UTS ≥ 480 MPa, YS ≥ 170 MPa, El ≥ 40% |
| Typical density ranges | Expected sintered density by material | MIM-316L: 7.5-7.8 g/cm³ |
| Test methods | Standards for verifying each property | ASTM E8 for tensile, ASTM B311 for density |
| MPIF Designation | Material | Min UTS (MPa) | Min Elongation (%) | Typical Hardness |
|---|---|---|---|---|
| MIM-316L | 316L stainless | 480 | 40 | 60-85 HRB |
| MIM-17-4PH H900 | 17-4PH aged | 1070 | 4 | 38-44 HRC |
| MIM-420 | 420 stainless | 1380 | 1 | 48-55 HRC |
| MIM-FN02 | Fe-2Ni low alloy | 410 | 4 | 60-85 HRB |
| MIM-Ti64 | Ti6Al4V | 830 | 8 | 30-36 HRC |
MPIF Standard 35 is the industry-standard material specification for MIM parts. It defines material designations (like MIM-316L), required chemical compositions, minimum mechanical properties, and standard test methods. When specifying a MIM material on a part drawing, use the MPIF designation — for example, "Material: MIM-316L per MPIF Standard 35." This ensures the supplier knows exactly what properties are required.
Note: If your application is automotive (IATF 16949), you may also reference ASTM or customer-specific standards alongside MPIF 35.