MP35N Cobalt Nickel Alloy - Ultra high strength, toughness & corrosion resistance. Certified supplier ZYTC Alloy stocks MP35N bar, tube, wire, sheet & plate. Get a competitive quote & free sample today for aerospace, medical & oil & gas applications.
Delivery :
FOB
minimum order :
50 kilograms
Supply Ability :
5000kilograms / Month
Stock Time :
7-10Day
Country of Origin :
CHINA
Quantity :
add to cart
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MP35N is an age-hardenable nickel-cobalt-chromium-molybdenum superalloy offering a unique combination of ultra-high strength (up to 300 ksi tensile), exceptional toughness, ductility, and outstanding corrosion resistance. It maintains properties from cryogenic temperatures up to 600°F (315°C) and exhibits excellent resistance to seawater, sour gas (NACE MR0175), and body fluids. This alloy is the preferred material for medical implants, aerospace fasteners, and oil & gas downhole tools .
1. Product Specifications & Physical Data
ZYTC Alloy supplies UNS R30035 in comprehensive mill forms for medical, aerospace, and oil & gas applications requiring verified mechanical properties and complete material traceability.
Available Forms: Round bar, tube (seamless), wire, sheet, and plate .
Specifications: AMS 5844, AMS 5845, ASTM F562 (medical), ISO 15156-3 (NACE MR0175), ISO 5832-6 (surgical implants) .
Chemical Composition (Weight %)
MP35N (UNS R30035) Specification
Cobalt (Co)
Balance
Nickel (Ni)
33.0 - 37.0
Chromium (Cr)
19.0 - 21.0
Molybdenum (Mo)
9.0 - 10.5
Titanium (Ti)
1.0 max.
Iron (Fe)
1.0 max.
Manganese (Mn)
0.15 max.
Silicon (Si)
0.15 max.
Carbon (C)
0.025 max.
Phosphorus (P)
0.015 max.
Sulfur (S)
0.010 max.
Boron (B)
0.010 max.
Physical Properties
Metric
Imperial
Density
8.43 - 8.45 g/cm³
0.304 - 0.305 lb/in³
Melting Point
1440°C
2625°F
Modulus of Elasticity
230 - 234 GPa
33.4 - 34.0 × 10⁶ psi
Modulus of Rigidity
80.7 GPa
11,700 ksi
Coefficient of Expansion (20-100°C)
12.8 µm/m·°C
7.1 × 10⁻⁶ in/in·°F
Mechanical Properties
Condition
Metric
Imperial
Tensile Strength (min.)
Annealed
896 MPa
130 ksi
Yield Strength (min.)
Annealed
414 MPa
60 ksi
Elongation (min.)
Annealed
45%
45%
Tensile Strength (min.)
Cold Worked + Aged
1790 - 2070 MPa
260 - 300 ksi
Yield Strength (min.)
Cold Worked + Aged
1380 - 1720 MPa
200 - 250 ksi
Elongation (min.)
Cold Worked + Aged
6 - 10%
6 - 10%
2. Fabrication & Material Comparison
MP35N (UNS R30035) requires specific processing to achieve its unique combination of properties.
Cold Working: Good ductility in annealed condition but high work-hardening rate; strength increases significantly with cold reduction .
Age Hardening: 482-593°C (900-1100°F) × 4-6 hours, air cool; 566°C (1050°F)/4h typical. Performed after final cold working for maximum strength .
Welding: Preferred method is TIG (GTAW) with low heat inputs; weld in annealed condition; post-weld cold working and aging required to restore full strength .
Machining: Work-hardens rapidly; requires rigid setups, sharp tools, low speeds, high feed rates, and ample coolant .
Material Comparison:
vs. 316L Stainless: Significantly higher strength (300 ksi vs. 80 ksi); superior corrosion resistance in chlorides; specified where 316L fails .
vs. Inconel 625: Higher achievable strength through age hardening; comparable corrosion resistance .
vs. Titanium Alloys: Higher strength; similar biocompatibility; higher modulus preferred for certain medical applications .
vs. 17-7PH: Superior corrosion resistance; higher strength potential; more expensive .
Industrial: High-strength fasteners, springs, instrumentation components
Contact ZYTC Alloy for certified MP35N materials with complete traceability, ASTM/AMS specifications, technical datasheets, and competitive pricing on standard sizes or custom-fabricated components.
