| Customization: | Available |
|---|---|
| Application: | Aviation, Electronics, Industrial, Medical, Chemical |
| Standard: | JIS, GB, DIN, BS, ASTM, AISI |
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C10Ni90 Nickel chromium alloy bar
Cr10Ni90 is a nickel-chromium (Ni-Cr) alloy with a specific composition of 10% nickel and 90% chromium. This alloy is renowned for its exceptional resistance to high temperatures and oxidation, making it ideal for various industrial applications where heat resistance and corrosion resistance are crucial. Cr10Ni90 exhibits excellent electrical resistivity, which makes it suitable for use in heating elements, resistors, and electrical heating appliances. Its high melting point and stability at elevated temperatures make it a preferred choice in environments where extreme heat and corrosive conditions are present, such as in furnace heating elements, kilns, and aerospace applications.
| Model Number | Cr10Ni90 |
| Type | Bare |
| Surface | Bright |
| Condition | Soft Annealed |
| Size | 8mm-50mm |
| Melting point | 1400ºC |
| Certificate | ISO ,ROHS |
| Application | Industrial Heating Equipments |
Cr10Ni90 rod bars, made from the Cr10Ni90 alloy, have various applications due to their unique properties. Here are some common applications:
Heating Elements: Cr10Ni90 rod bars are commonly used in electrical heating elements. Their high electrical resistivity and ability to withstand high temperatures make them ideal for heating coils in appliances like electric heaters, toasters, and ovens.
Industrial Furnaces: These rod bars are utilized in the construction of heating elements for industrial furnaces. With their excellent resistance to oxidation and high-temperature stability, they can withstand the harsh operating conditions inside furnaces and provide consistent heat generation.
Kilns: Cr10Ni90 rod bars are also employed in kilns, which require high-temperature resistance for applications like pottery, ceramics, and glass manufacturing. The rod bars can provide the necessary heat required for the firing and annealing processes.
Aerospace Industry: Due to its exceptional heat resistance and corrosion resistance, Cr10Ni90 rod bars find applications in the aerospace industry. They can be used in components and systems that are exposed to extreme temperatures and harsh environments, such as turbine engines and exhaust systems.
Resistance Welding: The high electrical resistance of Cr10Ni90 rod bars makes them suitable for resistance welding applications. Resistance welding involves the passage of an electrical current through the workpieces, generating heat at the joint interface. The rod bars can serve as electrodes or electrode holders in resistance welding setups.
Electrical Resistors: Cr10Ni90 rod bars can be used as resistive elements in electrical circuits and systems. They can be formed into specific shapes and used as resistors in various electronic devices, such as power supplies, amplifiers, and control systems.
| Alloy Nomenclature Performance | Ni90Cr10 | Ni80Cr20 | Ni70Cr30 | Ni60Cr15 | Ni35Cr20 | Ni30Cr20 | |
| Main Chemical composition | Ni | 90 | Rest | Rest | 55.0-61.0 | 34.0-37.0 | 30.0-34.0 |
| Cr | 10 | 20.0-23.0 | 28.0-31.0 | 15.0-18.0 | 18.0-21.0 | 18.0-21.0 | |
| Fe | Rest | ≤1.0 | ≤1.0 | Rest | Rest | Rest | |
| Max. continuous service temp. of element(ºC) | 1300 | 1200 | 1250 | 1150 | 1100 | 1100 | |
| Resistivity at 20ºC (μΩ·m) | - | 1.09 | 1.18 | 1.12 | 1 | 1.04 | |
| Density(g/cm3) | 8.7 | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
| Thermal conductivity (KJ/m·h·ºC) | - | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | |
| Coefficient of lines expansion(α×10-6/ºC) | - | 18 | 17 | 17 | 19 | 19 | |
| Melting point approx.( ºC) | 1400 | 1400 | 1380 | 1390 | 1390 | 1390 | |
| Elongation at rupture(%) | >20 | >20 | >20 | >20 | >20 | >20 | |
| Micrographic structure | - | Austenite | Austenite | Austenite | Austenite | Austenite | |
| Magnetic properties | - | nonmagnetic | nonmagnetic | Weak magnetic | Weak magnetic | Weak magnet | |
Raw Material Selection: High-quality nickel and chromium are selected as the primary raw materials. These materials must meet strict purity and quality standards to ensure the final product's performance.
Melting and Alloying: The nickel and chromium are melted together in precise proportions in an electric arc furnace or a vacuum induction furnace. The melting process is carefully controlled to achieve a homogeneous alloy with the desired composition (10% nickel and 90% chromium for Cr10Ni90).
Casting: Once the alloy is molten and properly mixed, it is cast into ingots or billets. This initial casting step helps to solidify the alloy and prepare it for further processing.
Hot Rolling: The cast ingots or billets are heated to high temperatures and passed through a series of rolling mills to reduce their cross-sectional area and lengthen them into bars. Hot rolling helps to refine the grain structure of the alloy and improve its mechanical properties.
Annealing: After hot rolling, the bars may undergo annealing in a controlled atmosphere furnace to relieve internal stresses and improve ductility. Annealing also helps to refine the microstructure of the alloy, enhancing its mechanical and electrical properties.
Surface Treatment: Depending on the intended application, the bars may undergo surface treatments such as pickling, passivation, or mechanical polishing to remove any surface contaminants and improve corrosion resistance or surface finish.
Cold Drawing (Optional): In some cases, the bars may undergo cold drawing to further reduce their diameter and improve dimensional accuracy. Cold drawing also enhances the bars' surface finish and mechanical properties.
Cutting and Finishing: The bars are cut to the desired length using shearing or sawing methods. They may also undergo additional finishing processes such as straightening, grinding, or polishing to meet customer specifications.
Quality Control: Throughout the production process, stringent quality control measures are implemented to ensure that the Cr10Ni90 bars meet the required specifications for composition, dimensions, surface finish, and mechanical properties. This includes regular testing of samples from the production batch for chemical composition, tensile strength, hardness, and other relevant properties.
Packaging and Shipping: Once the bars have passed quality control inspections, they are packaged according to customer requirements and prepared for shipping to end-users or distributors.
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