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What is NiColoy®
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NiColoy® is NiCoForm, Inc.'s class of proprietary electrodeposited Nickel-Cobalt alloys distinguished by the following combination of features:
- Leveled, smooth matte to semi bright deposit with low internal stress
- High tensile strength
- Medium-to-high hardness
- High modulus of elasticity
- High corrosion resistance
- High purity
- Amenable to soldering, brazing and welding
We produce two modifications of NiColoy® - high strength and high hardness, depending on the target application. The harder deposit is more suitable for mold inserts and mold repair applications. The high strength deposit exhibits a unique combination of elasticity and plasticity and is used to electroform bellows, diaphragms and other dynamic components. Please see the accompanying table and charts for a comparison of properties of the two varieties of NiColoy®.
As can be seen from the charts, the high strength alloy possesses lower yield, ultimate tensile strength, hardness, and a higher elongation. Such metals are conventionally described as 'ductile'. The high hardness alloy exhibits lower elongation, but greater hardness and strength. This material's mechanical properties are close to those of hardened tool steels.
Comparative Properties of NiColoy® and Nickel
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Property
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High Hardness NiColoy®
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High Strength NiColoy®
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Electroformed Nickel
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Comments
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Ultimate Tensile Strength (psi)
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210,000
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150,000
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91,500
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NiColoy® has a higher breaking point than Nickel
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Yield Strength (psi)
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185,000
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120,000
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61,000
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NiColoy® resists permanent deformation better than Nickel
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Hardness, RC
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45 - 55
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30 - 40
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< 20 |
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Modulus of Elasticity in Bending (psi)
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24,000,000
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22,000,000
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21,000,000
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NiColoy® has greater elasticity than Nickel
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Poisson’s Ratio
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0.31
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0.31
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0.31
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Shear Modulus (psi)
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9,200,000
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8,400,000
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8,000,000
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Elongation at Break
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0.25 - 2%
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3 - 5%
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15 - 25%
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Typical Composition
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Nickel – 95% Min.
Cobalt – balance
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Nickel – 85% Min.
Cobalt – balance
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Nickel - 99.5% Min.
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Max Temp Rating (°F)
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650
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650
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350
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NiColoy® retains its mechanical properties at a higher temperature than Nickel
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Coefficient of Thermal Expansion, mean linear at 20 Deg. C, uin/in/Deg.C
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13.3 |
13.3 |
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Data contained in this table is for informational purposes only and may be revised at any time without prior notice. Nothing contained in this document should be construed as guaranteeing the materials for a particular use or application. |
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