UNS K93500 / 1.3912 (Modified) / Ni32Co4

Alloy 36KNM: Properties, Applications, and Features

✅ General Technical Characteristics

Alloy 36KNM is a high-precision iron-nickel alloy with a low coefficient of thermal expansion. It is characterized by high dimensional stability with temperature changes, making it highly demanded in the production of precision measuring instruments and high-accuracy components. The alloy contains nickel, cobalt, and manganese, providing excellent mechanical properties and resistance to thermal deformation.

Main Characteristics:

• Low coefficient of thermal expansion.
• High dimensional stability with temperature variations.
• Good mechanical strength and wear resistance.
• Excellent corrosion resistance in various environments.
• Good weldability and machinability.

🔬 Chemical Composition of 36KNM (%):

• Iron (Fe): remainder
• Nickel (Ni): 34.0 – 37.0
• Cobalt (Co): 5.0 – 6.5
• Manganese (Mn): 0.3 – 0.6
• Silicon (Si): ≤ 0.3
• Phosphorus (P): ≤ 0.015
• Sulfur (S): ≤ 0.015

💡 The balanced composition of the alloy ensures its unique thermo-stable properties.

🏭 Applications

Alloy 36KNM is widely used in various industrial sectors requiring high precision and minimal thermal deformations.

Main Application Areas:

• Production of precision measuring instruments.
• Aerospace and defense industry.
• Manufacturing of components for laser and optical equipment.
• Electronics and instrumentation.
• Production of thermostatic elements and sensitive sensors.

📊 Mechanical Properties

• Tensile Strength (Rm): 550 – 750 MPa
• Yield Strength (Rp0.2): ≥ 250 MPa
• Hardness (HB): 140 – 200 HB
• Elongation (A5): ≥ 30 %

⭐ Features

• Minimal coefficient of thermal expansion – ensures dimensional stability with temperature fluctuations.
• High strength – excellent resistance to mechanical loads.
• Corrosion resistance – retains operational properties in aggressive environments.
• Excellent machinability – easily processed and welded.
• Wide range of applications – widely used in high-precision industrial sectors.

Alloy 36КНМ

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