Electroplating Iron Nickel Alloy Co257 Kovar 4j33 Precision Round Steel Expansion Alloy
Price:
Price is negotiated based on the required specifications and quantity
MOQ:
100KG
Delivery Time:
5-8 working days, depending on the parameters required for negotiation
Brand:
Zhonggong Special Metallurgy
Product Description
Electroplating Iron Nickel Alloy Co257 Kovar 4j33 Precision Round Steel Expansion Alloy
Product Attributes
| Attribute | Value |
|---|---|
| Density | High |
| Alloy Type | Iron-nickel-cobalt alloy |
| Elastic Modulus | 139 GPa |
| Resistivity | 0.46 μΩ·m |
| Thermal Expansion Coefficient | 8.5×10⁻⁶/°C |
| Mechanical Properties | Good plasticity and toughness |
| Magnetic Properties | High magnetic permeability and low hysteresis loss |
Product Description
Kovar 4J33 round bar Co257 round steel expansion alloy light bar iron nickel alloy bar.
Chemical Composition
The main chemical components of 4J33 alloy include iron (Fe), nickel (Ni), cobalt (Co) and a small amount of other elements:
| Element | Percentage |
|---|---|
| Nickel (Ni) | 32.1%-33.6% |
| Cobalt (Co) | 14.0%-15.2% |
| Iron (Fe) | Balance |
| Carbon (C) | ≤0.05% |
| Phosphorus (P) | ≤0.02% |
| Sulfur (S) | ≤0.02% |
| Manganese (Mn) | ≤0.50% |
| Silicon (Si) | ≤0.30% |
These components give 4J33 alloy its low thermal expansion coefficient and excellent mechanical properties, making it ideal for manufacturing electron tubes, magnetron electrodes, and ceramic seals.
Physical Properties
- Density: 8.27g/cm³
- Melting point: 1450℃
- Thermal conductivity: 17.6W/m•℃ (at 100℃)
- Elastic modulus: 139GPa
- Thermal expansion coefficient: α (20~100℃) = (4~11)×10^-6℃-1
Mechanical Properties
- Tensile strength: 539MPa
- Yield strength: 343MPa
- Elongation: 32%
- High elastic modulus with good plasticity and toughness
Magnetic Properties
Features high magnetic permeability and low hysteresis loss, making it ideal for precision magnetic equipment. Its extremely low magnetostriction coefficient ensures minimal size changes under magnetic fields.
Corrosion Resistance
Contains Cr and Mo elements that provide excellent corrosion resistance, maintaining structural integrity in various environments.
Processing and Welding Properties
Excellent machinability for cutting, bending, and drilling. Can be welded to copper, steel, nickel and other metals. Good electroplating properties allow surface plating with gold, silver, nickel, and chromium.
Application Fields
- Electronics: Electron tubes, magnetron electrodes, ceramic seals
- Aerospace: Electrodes, lead plates, sealing structures
- Instrumentation: Magnetic sensors, magnetometers
- Other: High-frequency equipment, navigators, aviation instruments
4J33 (Kovar alloy) plays a vital role in materials science and industrial technology with its unique properties and broad applications.
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Company
Jiangsu Zhonggongte Metallurgical Technology Co., Ltd.
Location
New South Stainless Steel Trading Market, Fangcheng Avenue, Wuxi City, Jiangsu Province, 12-101.
Contact Person
John zhou