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FeCrAl Alloy Customized Bright Resistance Wire 7.35 G/cm3 Density Electric Heat 0Cr21Al6 Wire
Product Introduction
0Cr21Al6 Wire is a high resistance electric heating alloy wire, the main chemical composition is carbon content ≤0.06%, silicon content ≤1.00%, manganese content ≤0.70%, phosphorus content ≤0.025%, sulfur content ≤0.025%, chromium content 19.0%~22.0%, nickel content ≤0.60%, aluminum content 5.0%~7.0%, the balance is iron. It has a high resistivity of 1.42±0.07μΩ·m, a density of 7.16 g/cm³, a melting point of about 1500ºC, and a maximum operating temperature of up to 1250℃.
This alloy wire has excellent oxidation resistance and high temperature strength. Due to the presence of aluminum, it can react with oxygen to form a dense oxide film, which plays an antioxidant role. It also has high tensile strength and good heat resistance, and can maintain good mechanical properties under high temperature environment. 0Cr21Al6 Wire is widely used in industrial electric furnaces, household appliances, aerospace, medical and chemical industries to manufacture electric heating elements, resistors, heating elements and explosion-proof equipment.
Parameter
| Shape | Size (mm) |
| Wire | 0.025-8.00mm |
| Rod | 8.00-50.00mm |
| Robbin | (0.05-0.35)*(0.5-6.0)mm |
| Strip | (0.50-2.50)*(5.00-180.00)mm |
| Alloy Nomenclature Performance | 1Cr13Al4 | 0Cr25Al5 | 0Cr21Al6 | 0Cr23Al5 | 0Cr21Al4/ 0Cr19Al3 | 0Cr21Al6Nb | 0Cr27Al7Mo2 | |
| Main chemical composition | 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 | |
| Rest | opportune | opportune | opportune | opportune | opportune | opportune | opportune | |
| Fe | Rest | Rest | Rest | Rest | Rest | Rest | Rest | |
| Others | -- | -- | -- | -- | -- | Nb 0.5 | Mo 1.8-2.2 | |
| Max. continuous service temp. of element( °C ) | 950 | 1250 | 1250 | 1250 | 1100 | 1350 | 1400 | |
| Resistivity at 20ºC(μΩ@m) | 1.25 | 1.42 | 1.42 | 1.35 | 1.23 | 1.45 | 1.53 | |
| Density(g/cm3) | 7.4 | 7.1 | 7.16 | 7.25 | 7.35 | 7.1 | 7.1 | |
| Thermal conductivity(KJ/m@h@ºC) | 52.7 | 46.1 | 63.2 | 60.2 | 46.9 | 46.1 | ||
| Line expansion coefficient(α×10-6/ºC) | 15.4 | 16 | 14.7 | 15 | 13.5 | 16 | 16 | |
| Melting point approx.( ºC) | 1450 | 1500 | 1500 | 1500 | 1500 | 1510 | 1520 | |
| Tensile Strength(N/mm2) | 580-680 | 630-780 | 630-780 | 630-780 | 600-700 | 650-800 | 680-830 | |
| Elongation at break(%) | >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 | ≥50/1350 | ≥50/1350 | |
| Micrographic structure | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite | |
| Magnetic properties | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic | |
Specific Applications
Advantages and Characteristics
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Related Questions and Answers
Q: What are the physical properties of 0Cr21Al6 Wire?
A: The density of 0Cr21Al6 Wire is about 7.16g/cm³, the thermal conductivity is about 63.2KJ/mhºC, the expansion coefficient is about 14.7×10⁻⁶/ºC, the melting point is about 1500ºC, and the resistivity at 20ºC is about 1.42μΩm.
Q: What is the corrosion resistance of 0Cr21Al6 Wire?
A: 0Cr21Al6 Wire has good oxidation resistance at high temperature and is especially suitable for use in atmospheres containing sulfur and sulfides.
Q: What are the mechanical properties of 0Cr21Al6 Wire?
A: The tensile strength of 0Cr21Al6 Wire is 650 MPa, and the elongation after fracture is ≥12%.
Q: What are the main application areas of 0Cr21Al6 Wire?
A: 0Cr21Al6 Wire is widely used in industrial electric furnaces, household appliances, far-infrared devices, etc. It is an ideal heating material.
Q: What are the heat treatment requirements for 0Cr21Al6 Wire?
A: The recommended heat treatment system is annealing at 750~850°C and water cooling.
