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Description
High resistivity, good oxidation resistance, very good form stability, good ductility and excellent weldability.
As furnace strip high quality Nichrome Tophet A Heating strip
Conductor:Ni80Cr20
The sizes:can be (2.0-4.0mm)Thickness x (20mm-45mm)Width,other sizes also can be available.
Condition:Oxidized(It is unnecessary to choice the bright condition,as it will be oxidized when heating)
Performance: High resistivity, good oxidation resistance, very good form stability, good ductility and excellent weldability.
Other Nichrome Alloy: Ni70Cr30, Ni60Cr15, Ni35Cr20, Ni30Cr20 etc.
| Propertes/Grade | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | |
| Main Chemical Composition(%) | Ni | Rest | Rest | 55.0-61.0 | 34.0-37.0 | 30.0-34.0 |
| Cr | 20.0-23.0 | 28.0-31.0 | 15.0-18.0 | 18.0-21.0 | 18.0-21.0 | |
| Fe | ≤ 1.0 | ≤ 1.0 | Rest | Rest | Rest | |
| Max Continuous Service Temperature(C) | 1200 | 1250 | 1150 | 1100 | 1100 | |
| Resistivity at 20C (μ Ω @ m) | 1.09 | 1.18 | 1.12 | 1.04 | 1.04 | |
| Density(g/cm3) | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
| Thermal Conductivity (KJ/m@ h@ C) | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | |
| Coefficient of Thermal Expansion(α × 10-6/C) | 18 | 17 | 17 | 19 | 19 | |
| Melting Point(C) | 1400 | 1380 | 1390 | 1390 | 1390 | |
| Elongation(%) | > 20 | > 20 | > 20 | > 20 | > 20 | |
| Micrographic Structure | austenite | austenite | austenite | austenite | austenite | |
| Magnetic Property | nonmagnetic | nonmagnetic | nonmagnetic | nonmagnetic | nonmagnetic | |
NiCr alloys Advantages
Have higher hot and creep strength than FeCrAl alloys.
Better ductility after long use than FeCrAl alloys.
Generally have better corrosion resistance at room temperature than FeCrAl alloys.
Longer life span than FeCrAl.
And other FeCrAl can be used as furnace strip:1Cr13Al4,0Cr25Al5,0Cr27Al7Mo2 etc
