MP35N (UNS R30035): Multiphase Alloy for Medical Implants & Deep-Sea
AMS 5844 / ASTM F562 · Published: 2026-06-02 · Updated: 2026-06-02
MP35N achieves >1,900 MPa through FCC→HCP phase transformation during cold work + aging. 8× the strength of 316L with superior corrosion resistance. For orthopedic implant fracture fixation, pacemaker leads, deep-sea submarine cable strength...
MP35N achieves >1,900 MPa through FCC→HCP phase transformation during cold work + aging. 8× the strength of 316L with superior corrosion resistance. For orthopedic implant fracture fixation, pacemaker leads, deep-sea submarine cable strength members. NACE MR0175 compliant for H2S service.
Quick Facts
| Category | Nickel Alloy |
| Standard | AMS 5844 / ASTM F562 |
| Density | 8430 kg/m³ |
| Yield Strength | 1,600 MPa (cold-worked+aged) |
| Tensile Strength | 1,900 MPa |
Global Equivalents & Cross-Reference
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Frequently Asked Questions
MP35N vs 316L for implants?
8× tensile strength (1,900 vs 240 MPa). Immune to chloride SCC. 10-15× cost justified for permanent implants where device failure = revision surgery.
References & International Standards
- ASTM International. Standard Specifications for Steel & Metal Alloys. astm.org
- International Organization for Standardization (ISO). Metallic Materials — Cross-Reference Database. iso.org
- American Iron and Steel Institute (AISI). Steel Grade Designations & Equivalents. steel.org
- European Committee for Standardization (CEN). EN Steel Standards & Numbering System. cencenelec.eu