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MP35N

MP35N COBALT NICKEL

MP35N is a nickel-cobalt-chromium-molybdenum alloy that is known for its high strength, corrosion resistance, and biocompatibility. It is commonly used in medical and dental implants, as well as in aerospace and industrial applications. The alloy is also non-magnetic, which makes it useful in electronic applications. The attractive properties of MP35N have led to its adoption into critical equipment in industries including aerospace, medicine, mining, offshore equipment, and oil and gas production.

The unique capabilities of MP35N are derived from the alloy’s chemistry, premium melting technology, cold-working, and heat treatment. MP35N (UNS R30035) is a vacuum induction melted (VIM), vacuum arc re-melted (VAR) superalloy with cobalt, nickel, chromium, and molybdenum as its primary alloying elements. Its nominal chemical composition by weight is 35% cobalt, 35% nickel, 20% chromium, and 10% molybdenum. The VIM VAR melt practice provides superior cleanliness and reduces the presence of non-metallic inclusions and residual elements, like carbon, that have deleterious effects on mechanical properties and corrosion resistance.

A close-up view of a stack of shiny, cylindrical metal rods resting in a workshop. The rods, likely forged from fighter jet metals, are uniformly cut with smooth surfaces, arranged parallel to each other, and the background contains blurred machinery and workshop tools.

ROUND BAR

MP35N Round Bar diameters range from 0.125″ to 5.00″ diameter.
A stack of flat metal bars piled on top of each other. The bars, possibly crafted from fighter jet metals, are aligned horizontally, showcasing their thin, rectangular shape and metallic finish. The image highlights the texture and edges of the bars in close detail.

FLAT BAR

Close-up of several stacked aluminum sheets in an industrial setting. The smooth, reflective surfaces of the sheets are clearly visible, akin to the polished finish found in fighter jet metals. The edges show precision cuts, and the background includes blurred industrial equipment and shelving units.

PLATE

A stack of shiny, rectangular metal sheets, reminiscent of fighter jet metals, is placed on a wooden palette in an industrial setting. The sheets have smooth surfaces and uniform thickness, with the image focused on the layered edges. The background shows blurred industrial equipment.

SHEET

Applications of MP35N

AEROSPACE

MP35N is used in aircraft components, such as gears and shafts, due to its high strength and corrosion resistance.

MEDICAL AND DENTAL

The alloy is commonly used in implants, such as artificial joints and spinal cages.

OIL & GAS

MP35N is used in downhole tools and other components in the oil and gas industry.

MP35N SPECIFICATIONS

OEM SPECIFICATIONS

BARS & FORGINGS

MP35N HEAT TREATING CONDITIONS

Ultrasonic Testing

MP35N TECHNICAL INFORMATION

The unique capabilities of MP35N are derived from its specific chemical composition, which includes a high concentration of cobalt, nickel, chromium, and molybdenum, as well as the manufacturing process used to create the alloy. The use of vacuum induction melting (VIM) and vacuum arc re-melting (VAR) techniques results in a high-purity alloy with minimal non-metallic inclusions, which can negatively impact the alloy’s mechanical and corrosion-resistant properties.

The high concentration of cobalt and nickel in the alloy gives it excellent strength and corrosion resistance. Chromium improves the alloy’s resistance to oxidation and corrosion, while molybdenum improves its strength and toughness.

The cold-working and heat treatment processes also play an important role in enhancing the alloy’s properties. Cold-working helps to improve the alloy’s strength and toughness, while heat treatment can further increase its strength by precipitation hardening.

  1. High strength: The high concentration of cobalt and nickel in the alloy gives it excellent strength, making it useful in applications where high loads or high stress is expected.

  2. Corrosion resistance: The high concentration of nickel and chromium in the alloy gives it excellent corrosion resistance, especially in environments where it is exposed to harsh chemicals or high temperatures.

  3. Biocompatibility: The alloy’s biocompatibility is due to its specific chemical composition, which makes it non-toxic and non-reactive to living tissue. This makes it suitable for use in medical and dental implants.

  4. Non-magnetic properties: The alloy’s non-magnetic properties are also due to its specific chemical composition, which makes it useful in electronic applications, such as relays and switches.

  5. Cleanliness: The VIM VAR melt practice used to produce MP35N results in a high-purity alloy with minimal non-metallic inclusions, which can negatively impact the alloy’s mechanical and corrosion-resistant properties.

  6. Cold working: The cold working process helps to improve the alloy’s strength and toughness by introducing a high density of dislocations.

  7. Heat treatment: The heat treatment process results in a precipitation hardening which further increases the alloy’s strength by forming small, hard particles throughout the microstructure.

  8. Toughness: The presence of molybdenum in the alloy improves its toughness, which is the resistance to impact and crack propagation.

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