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Products Description
0Cr21Al4 resistance wire is an important heating element material composed of iron, chromium, aluminum, and trace elements. Its typical chemical composition is iron (Fe): residual, chromium (Cr): 20-23%, aluminum (Al): 3.0-4.2%, as well as trace amounts of manganese, silicon, phosphorus, and sulfur. This type of alloy wire has high electrical resistivity and good oxidation resistance, which can maintain stable electrical resistance characteristics in high temperature environments and is not easy to deform or melt. Therefore, it is widely used in the manufacturing of heating elements in industrial heating equipment, household appliances, and the automotive industry. For example, it is commonly used in the heating components of equipment such as ovens, water heaters, and heat treatment furnaces to achieve fast and uniform heating effects. Its excellent performance makes it one of the preferred materials in many fields, providing reliable solutions for various heating needs.
Parameter：
Alloy Nomenclature Performance | 1Cr13Al4 | 0Cr25Al5 | 0Cr21Al6 | 0Cr23Al5 | 0Cr21Al4 | 0Cr21Al6Nb | 0Cr27Al7Mo2 | |
Chemical Compostion (%) | Cr | 12.0-15.0 | 23.0-26.0 | 19.0-22.0 | 20.5-23.5 | 18.0-21.0 | 21.0-23.0 | 26.5-27.8 |
Al | 4.0-6.0 | 4.5-6.5 | 5.0-7.0 | 4.2-5.3 | 3.0-4.2 | 5.0-7.0 | 6.0-7.0 | |
Re | Opportune | Opportune | Opportune | Opportune | Opportune | Opportune | Opportune | |
Fe | Rest | Rest | Rest | Rest | Rest | Rest | Rest | |
-- | -- | -- | -- | -- | -- | -- | ||
Max.Continuous service temp. of element | 950 | 1250 | 1250 | 1250 | 1100 | 1350 | 1400 | |
Resistivity at 20C(μΩ.m) | 1.25 | 1.42 | 1.42 | 1.35 | 1.23 | 1.45 | 1.53 | |
Density(g/cm) | 7.4 | 7.1 | 7.16 | 7.25 | 7.35 | 7.1 | 7.1 | |
Thermal Conductivity(KJ/m.h) | 52.7 | 46.1 | 63.2 | 60.2 | 46.9 | 46.1 | -- | |
Coefficient of lines expansion(αx10-6/℃) | 15.4 | 16 | 14.7 | 15 | 13.5 | 16 | 16 | |
Melting Point Approx(degree) | 1450 | 1500 | 1500 | 1500 | 1500 | 1510 | 1520 | |
Tensile Strength(N/mm) | 580-680 | 630-780 | 630-780 | 630-780 | 600-700 | 650-800 | 680-830 | |
Elongation at rupture(%) | >16 | >12 | >12 | >12 | >12 | >12 | >10 | |
Variation of area(%) | 65-75 | 60-75 | 65-75 | 65-75 | 65-75 | 65-75 | 65-75 | |
Repeat Bending frequency(F/R) | >5 | >5 | >5 | >5 | >5 | >5 | >5 | |
Hardness(H.B.) | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | 200-260 | |
continuous service time(Hours/ ºC) | -- | ≥80/1300 | ≥80/1300 | ≥80/1300 | ≥80/1250 | ≥80/1350 | ≥80/1350 | |
Micrographic structure | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | |
Magnetic properties | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | |
Shape | Size (mm) |
Wire | 0.05-7.5 |
Rod | 8-50 |
Ribbon | (0.05-0.35)*(0.5-6.0) |
Strip | (0.5-2.5)*(5-180) |
For more details, pls directly contact us.
Feature：
High resistivity: Due to its special alloy composition, 0Cr21Al4 resistance wire has a high resistivity, making it an ideal heating element material.
Excellent antioxidant performance: In high-temperature environments, this resistance wire can effectively resist oxidation and is not easy to form an oxide layer, thus maintaining stable resistance characteristics.
High temperature stability: 0Cr21Al4 resistance wire can operate stably for a long time at high temperatures, is not easy to deform or melt, and is suitable for high-temperature heating environments.
Rapid heating: Due to its high electrical resistivity and excellent conductivity, this resistance wire can quickly convert electrical energy into thermal energy, achieving a rapid heating effect.
Uniform heating: 0Cr21Al4 resistance wire can evenly release heat during the heating process, making the heated object uniformly heated and avoiding local high or low temperatures.
Corrosion resistance: This resistance wire has good corrosion resistance and is suitable for heating needs in various harsh environments.
Application：
Industrial heating equipment: used in various industrial heating equipment, such as heating furnaces, heat treatment furnaces, furnaces, etc. These devices need to be able to quickly and uniformly heat the workpiece, and the high resistivity and stability of 0Cr21Al4 resistance wire make it an ideal heating element material.
Household appliances: Used in various household appliances, such as ovens, water heaters, dryers, etc. These appliances require reliable heating elements to provide temperature control and heating effects, and 0Cr21Al4 resistance wires can meet their high temperature and rapid heating needs.
Automotive industry: used in automotive engine preheating systems, seat heaters, windshield defogger and other components. In the automotive industry, 0Cr21Al4 resistance wires can provide reliable heating effects to meet the needs of interior comfort and driving safety.
Laboratory equipment: Used in laboratory heaters, thermostats, drying ovens, and other equipment. Laboratories often require precise temperature control and rapid heating of samples, and 0Cr21Al4 resistance wires can provide stable heating effects to meet experimental requirements.
Aerospace field: used for heating elements in aviation engines, temperature control inside spacecraft, etc. In extreme environments, 0Cr21Al4 resistance wires can provide reliable heating effects to ensure the normal operation of the equipment.
production process
Raw material preparation: Prepare alloy raw materials, including metal materials such as iron, chromium, and aluminum, and mix them in a certain proportion.
Mixing and melting: Put various metal raw materials in the ingredients into the furnace for mixing and melting until a uniform alloy liquid is formed.
Wire drawing forming: The liquid alloy is drawn into a desired diameter and length of resistance wire through a special mold or nozzle.
Curing and cooling: Place the drawn resistance wire in an appropriate environment for curing and cooling, gradually solidifying it into a solid.
Cold drawing and annealing: Cold drawing is performed on the cured resistance wire to improve its mechanical properties and dimensional accuracy, and appropriate annealing treatment is carried out to eliminate internal stress and improve its conductivity.
Cutting and packaging: Cut the resistance wire into appropriate lengths as needed and package it for transportation and storage.
Quality inspection: Conduct quality inspection on the finished resistance wire, including appearance inspection, size measurement, chemical composition analysis, resistivity testing, etc., to ensure that the product meets standard requirements.
Finished product delivery: After passing the inspection, the qualified resistance wire can be delivered to the market for use.
Q&A：
Q: What is the main chemical composition of 0Cr21Al4 resistance wire?
Answer: The main components include iron, chromium, and aluminum.
Q: What are the main characteristics of 0Cr21Al4 resistance wire?
Answer: The main characteristics include high electrical resistivity, excellent antioxidant performance, and high-temperature stability.
Q: What are the main application areas of 0Cr21Al4 resistance wire?
Answer: Mainly used in industrial heating equipment, household appliances, automotive industry, and laboratory equipment.
E-mail: Info@hulkalloy.com
Mobile: 0086 13852926463
Tel: 0086 13852926463
Whatapps: 0086 13852926463
Add: Renli Village, Fangxian Town, Danyang City, Jiangsu Province, China
