Engineered for unparalleled performance in the most demanding applications, MP35N® fasteners represent the pinnacle of reliability, strength, and corrosion resistance.

1. Superior Chemical Composition
MP35N is a unique cobalt-nickel-chromium-molybdenum alloy. Its precise composition is the foundation of its exceptional properties:

• Cobalt (Co): 35%

• Nickel (Ni): 35%

• Chromium (Cr): 20%

• Molybdenum (Mo): 10%
  This balanced formula provides an optimal combination of high strength, ductility, and outstanding resistance to corrosion and hydrogen embrittlement.

2. Exceptional Mechanical Properties
Through cold working and aging treatments, MP35N fasteners achieve extraordinary mechanical characteristics:

• Ultimate Tensile Strength: Up to 300 ksi (2068 MPa)

• Yield Strength (0.2% Offset): Up to 285 ksi (1965 MPa)

• Elongation: Typically 8-12%

• Remarkable Ductility despite ultra-high strength, ensuring toughness and reliability.

• Excellent Fatigue Strength and Fracture Toughness.

3. Key Material & Industry Standards
Our MP35N fasteners are manufactured to meet the most stringent specifications, including:

• ASTM F562: Standard Specification for Wrought 35Cobalt-35Nickel-20Chromium-10Molybdenum Alloy for Surgical Implant Applications.

• AMS 5844: Aerospace Material Specification for bars, forgings, and rings.

• ISO 5832-6: Implants for surgery – Wrought cobalt-nickel-chromium-molybdenum alloy.

• NASM 8830 / AS8879: Widely referenced in aerospace fastener specifications.

• Compliant with DFARS requirements.

4. Dominant Application Fields
MP35N fasteners are critical in industries where failure is not an option:

• Aerospace & Defense: Landing gear, engine components, flight control linkages, and structural airframe parts.

• Medical & Surgical Implants: Permanent implants, bone screws, orthopedic cables, and dental applications due to superb biocompatibility.

• Oil & Gas: Downhole tools, subsurface safety valves, and equipment for sour gas (H₂S) environments.

• Marine & Chemical Processing: Components exposed to seawater, chlorides, and aggressive chemicals.

• High-Performance Automotive & Racing: Critical systems requiring maximum strength-to-weight ratios.

5. Unmatched Advantages
Choosing MP35N fasteners delivers a decisive competitive edge:

• Extreme Corrosion Resistance: Unrivaled resistance to pitting, crevice corrosion, and stress-corrosion cracking (SCC) in chloride environments.

• Ultra-High Strength-to-Weight Ratio: Provides immense clamping force and joint integrity while minimizing weight.

• Superior Fatigue Life: Exceptional performance under dynamic and cyclic loading conditions.

• Excellent Resistance to Hydrogen Embrittlement: A critical advantage in high-strength applications.

• Biocompatibility: Ideal for long-term implantation in the human body.

• Wide Operational Temperature Range: Maintains properties from cryogenic temperatures up to approximately 800°F (427°C).

Partner with Excellence
When your project demands the ultimate in fastener performance, durability, and safety, specify MP35N. Contact us today to discuss how our MP35N fastener solutions can ensure the integrity and longevity of your most critical designs.

*MP35N® is a registered trademark of SPS Technologies, Inc., and/or its related companies. Properties may vary based on specific processing, size, and heat treatment. Specifications are for reference only.*