Heating resistant strip FeCrAl alloy
1. General Description
FeCrAl alloy is made by a high-temperature, ferritic iron-chromium-aluminium alloy which can be used at temperatures up to 1350degrees. Typical applications for 0Cr21Al6Nb are as electrical heating elements in high-temperature furnaces in the heat treating, ceramics, glass, steel, and electronics industries.
2. Chemical Composition
0Cr21Al6Nb Cr: 21.0-23.0% Al: 5.0-7.0% Fe: Balance Nb: Opportune 0.5
Adequacy 0.5
3. Properties
Alloy Specific Resistance (at 20° Cµ Ω -m): 1.45+-0.07
Hardness: 200-260
Linear Expansion Coeff. (T=20-1000degrees): 16.0X10-6
Melting Point: 1510
Max ContinuousService Temperance: 1350
4. Sizes:
Wire diameter: 0.15mm-8.0mm
Strip:
1). Electric ceramic cooktop resistance strip:
Thickness: 0.04mm-1.0mm
Width: 5mm-12mm
Thickness&Width: (0.04mm-1.0mm)× 12mm(above)
2). Low resistance ribbon:
Thickness&Width: (0.2mm-1.5mm)*5mm
3). Industrial furnace ribbon:
Thickness: 1.5mm-3.0mm
Width: 10mm-30mm
| The allowable tolerance of alloy strip GB/T1234-2012 |
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| Category | Thickness ( mm ) | Tolerance ( mm) |
|
| Common precision | High precision |
|
| Cold-rolled strip | 0.05 ~ 0.1 | ±0.01 | ±0.005 |
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| 0.1 ~ 0.2 | ±0.015 | ±0.01 |
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| 0.2 ~ 0.5 | ±0.02 | ±0.015 |
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| 0.5 ~ 1.0 | ±0.03 | ±0.025 |
|
| 1.0 ~ 1.8 | ±0.04 | ±0.03 |
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| 1.8 ~ 2.5 | ±0.05 | ±0.04 |
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| 2.5 ~ 4.0 | ±0.06 | ±0.05 |
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| Hot-rolled Strip | 2.5 ~ 5.0 | ±0.25 | ±0.2 |
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| 5.0 ~ 7.0 | ±0.3 | ±0.25 |
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| 7.0 ~ 10.0 | ±0.4 | ±0.35 |
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| 10.0 ~ 20.0 | ±0.5 | ±0.45 |
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| The allowable tolerance of alloy strip GB/T1234-2012 |
| Category | Width ( mm ) | Tolerance ( mm ) |
| side cut | Nonside cut |
| Common precision | High precision |
| Cold-rolled Strip | 5.0 ~ 10.0 | ±0.2 | ±0.1 | -0.6 |
| 10.0 ~ 20.0 | -0.8 |
| 20.0 ~ 30.0 | -1 |
| 30.0 ~ 50.0 | ±0.3 | ±0.15 | -1.2 |
| 50.0 ~ 100.0 | ±1.0 |
| 100.0 ~ 200.0 | ±0.5 | ±0.25 | ±1.5 |
| 200.0 ~ 300.0 | ±1.8 |
| Hot-rolled Strip | 15.0 ~ 60.0 | / | ±1.5 |
| 60.0 ~ 200.0 | ±2.5 |
| 200.0 ~ 300.0 | ±3.0 |
| Properties/Grade | 0Cr21Al6Nb |
| Main Chemical composition(%) | Cr | 21.0-23.0 |
| Al | 5.0-7.0 |
| Fe | Balance |
| Re | opportune |
| Nb: 0.5 |
| Max. continuous service temp. of element | 1350 |
| Resistivity at 20oC (μ Ω @ m) | 1.45+-0.07 |
| Density (g/cm3) | 7.1 |
| Thermal conductivity(KJ/m@ h@ oC) | 46.1 |
| Coefficient of lines expansion(α × 10-6/oC) | 16 |
| Melting point (approx. )( oC) | 1510 |
| Elongation at rupture (%) | ≥ 12 |
| Micrographic structure | Ferrite |
| Magnetic properties | magnetic |
Hangzhou Ualloy Material Co., Ltd is a high-tech enterprise which specialized in making all kinds of alloy strip such as high resistance alloy, low-resistance copper nickel alloy, precision alloy, FeCrAl alloy for exhaust purifier.
HangZhou Ualloy Material Co., Ltd have a full production line from melting, surface cleaning, rolling and slitting, full set of testing machine and can meet all kinds of technical requirement from customer. Our product is widely used in heating equipment, big steel mill, mineral, electrical equipment, food machinery, auto industry, aerospace industry. Our product not only is popular in domestic market, but also been exported to all over the world.
Our company aims to be the best-quality alloy strip producer in the world. We insist on developing the more advanced alloy strip technology, to serve all the customer, improve people's living level, make a more green earth in the future.
