Product Description
Nickel Alloy 6J22 (also known as NiCr20Al3Fe2) and 6J23 Alloy are specialized high-temperature alloys made primarily from nickel, chromium, aluminum, and iron. These alloys are designed for applications requiring resistance to oxidation, high-temperature stability, and mechanical strength in extreme environments, particularly in electrical heating and high-heat components.
Overview of Alloy Composition and Properties
| Alloy Name |
Designation |
Material Type |
Key Characteristics |
| 6J22 |
NiCr20Al3Fe2 |
Nickel-Chromium-Aluminum-Iron Alloy |
Excellent high-temperature resistance and oxidation resistance, especially in electrical heating applications. |
| 6J23 |
- |
High-performance Nickel Alloy |
High oxidation resistance and strength at elevated temperatures. |
Chemical Composition (Approximate)
| Element |
6J22 (NiCr20Al3Fe2) |
6J23 Alloy |
| Nickel (Ni) |
~20% |
~20-30% |
| Chromium (Cr) |
~20% |
~15-25% |
| Aluminum (Al) |
~3% |
~3-5% |
| Iron (Fe) |
~55% |
~40-50% |
| Manganese (Mn) |
≤0.50% |
≤0.50% |
| Silicon (Si) |
≤0.50% |
≤0.50% |
| Carbon (C) |
≤0.05% |
≤0.05% |
Key Properties
| Property |
6J22 and 6J23 Alloy |
| Density (g/cm³) |
~8.0 |
| Melting Point (°C) |
~1350-1400 |
| Thermal Expansion (ppm/°C) |
~15 |
| Tensile Strength (MPa) |
~550-700 |
| Yield Strength (MPa) |
~450-600 |
| Elongation (%) |
~10-15 |
| Hardness (HRC) |
~30-40 |
Features and Advantages
- High-Temperature Resistance: The high content of nickel, chromium, and aluminum ensures excellent resistance to oxidation and thermal degradation at high temperatures, especially in environments exposed to heat cycling.
- Oxidation and Corrosion Resistance: The chromium and aluminum content improves the alloy's ability to resist oxidation and corrosion, which is crucial in harsh environments like electrical heating elements.
- Thermal Fatigue Resistance: The alloy is resistant to thermal cycling, making it ideal for components exposed to frequent temperature changes.
- Fabricability: The alloys can be easily processed into thin sheets or foils, allowing them to be used in a variety of applications with minimal loss of performance.
- Electrical Conductivity: These alloys maintain good electrical conductivity, which is why they are often used in electrical heating elements and resistors.
Applications
-
Electrical Heating Elements:
- 6J22 and 6J23 alloys are widely used in electric heating elements in furnaces, stoves, and industrial heaters, where high-temperature resistance is required.
- They are also found in applications like resistors, heating coils, and other electrical components exposed to high thermal stresses.
-
Power Generation:
- Components such as heating elements and parts used in power plants that require resistance to oxidation and thermal degradation.
-
Industrial Equipment:
- Heat exchangers, gas turbine components, and other industrial systems that need high-temperature strength and oxidation resistance.
-
Chemical Processing:
- Equipment such as reactors, piping systems, and other parts exposed to high heat and corrosive environments.
Specifications
| Form |
Thickness |
Size |
| Plate |
1 mm to 100 mm |
Custom sizes available. |
| Sheet |
0.05 mm to 5 mm |
Precision cut to application. |
| Coil/Foil |
0.02 mm to 1 mm |
Custom sizes available. |
Heat Treatment
-
Solution Annealing:
- Temperature: ~1050-1150°C.
- Cooling: Rapid cooling in water or air to preserve the alloy's strength and mechanical properties.
-
Aging Treatment:
- Performed at around 800-900°C to further improve high-temperature stability and strength.
Shandong Titanium Nickel Special Steel Co., Ltd., registered funds (one thousand yuan for 10,000 yuan), the company is mainly committed to high -tech enterprises that are integrated with special alloy materials, specializing in the research and sales of special alloys such as nickel -based and iron -based. Products include corrosion-resistant alloys, superalloys, precision alloys, Hastelloy, Monel, INCONEL, INCOLOY, copper-nickel alloys, titanium and titanium alloys, zirconium and zirconium alloys, nickel and nickel-based alloys, nickel-cobalt-based heat-resistant alloys , Hafnium alloy, etc., more than 60 kinds of alloy materials such as special stainless steel. On the basis of stabilizing the quality of the original products, according to the market demand, it solves the quality problems existing in the traditional metallurgical process, and ensures the low miscellaneous and low deflection of the alloy material products, which has won an excellent reputation in the industry.
| Property |
|
Precision Alloy Steel Sheets |
| Material Composition |
|
Similar to strips, precision alloy sheets are made from carefully controlled compositions, often with low expansion coefficients or specialized magnetic properties, such as Invar or Mu-metal. |
| Thickness |
|
Precision alloy sheets are thicker than strips, typically ranging from 0.5 mm to several millimeters, depending on mechanical and thermal property requirements. |
| Applications |
|
Commonly used in industries such as aerospace, electronics, and medical devices for components like structural parts, enclosures, and sensitive instrumentation that require controlled mechanical properties and dimensional accuracy. |
| Mechanical Properties |
|
High tensile strength, excellent flatness, and precision in dimensions. These sheets offer stable mechanical properties under both high and low temperature conditions. |
| Thermal Properties |
|
Similar to strips, these sheets are designed for specific thermal behaviors, such as low expansion or high-temperature stability, depending on the alloy (e.g., Invar, Mu-metal). |
| Electrical Properties |
|
Precision alloys in sheet form may also have controlled electrical resistance, especially for applications in sensitive electronics or electrical components. |
| Magnetic Properties |
|
Similar to strips, magnetic alloys like Mu-metal sheets are used for shielding in sensitive equipment to control or eliminate external magnetic interference. |
| Forming & Fabrication |
|
Precision alloy sheets can be cold-rolled, heat-treated, laser-cut, or stamped. They are suitable for both complex shapes and applications requiring high dimensional tolerance and material consistency. |
| Heat Treatment |
|
Heat treatments like solution annealing or stress-relief are common for precision alloy sheets to improve properties such as strength, stability, and resistance to thermal expansion. |
| Welding & Joining |
|
Precision alloy sheets can be welded or brazed, although welding requires careful control of heat to avoid compromising the alloy's properties. |
| Examples of Alloys |
|
Invar, Mu-metal, Kovar, Constantan, Permalloy |
| Cost |
|
Precision alloy sheets are also expensive, as they require precise manufacturing and composition control. Their cost is higher than standard steel or non-precision alloys. |
| Common Standards |
|
ASTM A-240, ASTM B-637, ASTM B-553, AMS 5525 |
Detailed Photos
Key Advantages:
- Controlled Properties: Tailored for specific applications, offering controlled expansion, high strength, or high electrical conductivity.
- Dimensional Stability: Excellent flatness, accuracy, and stability, even under thermal cycling.
- High Durability: Resistant to thermal, mechanical, and magnetic stresses, making them suitable for critical components in sensitive environments.
Factory workshop
Product application
Packaging & Shipping
FAQ
1: What is precision alloy?
Precision alloys refer to special alloys with high purity, uniformity and stability. They are usually used to manufacture parts or components that have extremely strict size, shape and performance requirements. They have special physical properties (such as magnetic, electrical, thermal, etc.) and chemical properties to meet specific engineering requirements.
2: What are the main types of precision alloys?
Precision alloys can be divided into many types according to their different physical properties, mainly including:
Magnetic alloys: Such as soft magnetic alloys and permanent magnetic alloys (hard magnetic alloys).
Elastic alloy: An alloy that can deform reversibly under certain stress or temperature conditions.
Expansion alloy: An alloy with a large linear expansion coefficient within a certain temperature range.
Thermal Bimetal: A composite material composed of two or more metallic materials that exhibit different thermal expansion properties.
Resistive Alloys: Alloys with stable resistivity and constant temperature coefficient of resistance.
Thermoelectric alloy: Alloy with thermoelectric effect.
Hydrogen storage alloy: An alloy with hydrogen storage function.
Shape memory alloy: Alloys with shape memory effect.
Magnetostrictive alloy: A type of metal material with magnetostrictive effect.
3: What are the main application areas of precision alloys?
Precision alloys are widely used in aerospace, automobiles and trains, energy and chemicals, medical equipment, electronics industry, fasteners and other fields. For example, in the aerospace field, precision alloys are used to manufacture aircraft engines, aviation structural parts, missiles, etc.; in the automotive and train field, they are used to manufacture engines, transmission systems, chassis components, tracks, wheels, etc.
4: What is the production process of precision alloy?
The production process of precision alloys includes the selection and pretreatment of alloy raw materials, smelting and casting, heat treatment and processing technology, as well as surface treatment and performance testing. The entire production process requires precise control of each link to ensure that the composition and performance of the alloy meet the requirements.
5: How to detect the quality of precision alloy?
Quality testing of precision alloys is mainly through chemical analysis and physical property testing. Commonly used testing methods include spectral analysis, tensile testing, hardness testing and low-temperature impact testing to ensure that each batch of alloys can meet predetermined technical requirements.
6: What are the significant advantages of precision alloys?
Advantages of precision alloys include:
Has unique physical properties, such as excellent electrical conductivity, thermal conductivity and magnetism.
Excellent mechanical properties, high strength, wear resistance and good elasticity.
Strong corrosion resistance and long service life.
Stable performance in a wide temperature range and wide application.
It has good processing performance and is easy to manufacture precisely.
The ingredients and organization are controllable to meet diverse needs.
7: What kind of performance does precision alloy show in a magnetic field?
Magnetic alloys in precision alloys exhibit excellent magnetic properties in magnetic fields. For example, soft magnetic alloys have high magnetic permeability and low coercivity, are easy to demagnetize, and have low energy loss during cyclic magnetization, making them indispensable materials in electromagnetic equipment.
8. How can I contact you for more information?
You can contact us through the following methods
Online support: Visit our website for live chat
Address: 300 Meters North of Liaoniu Road and Xindong Ring Road, Liaocheng High-Tech Zone, Liaocheng, Shandong, China
We look forward to providing you with high-quality products and services!
If you have any other questions, feel free to contact us, and we will do our best to assist you!
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