Specialty Nickel Chromium Heating Alloys
NiCr 37:18
Alloy Description
NiCr 37:18 is a nickel-chromium-iron alloy with excellent resistance to carbonization. It is widely used in conveyor belts for industrial furnaces.
Condition of Supply
NiCr 37:18 is supplied in the following conditions:
- Cold Drawn, Spring Temper.
- Cold Drawn, Annealed.
Nominal Composition
| Nickel % | Chromium % | Iron % |
|---|---|---|
| 37 | 18 | Balance |
Specifications
| British Standard | Werkstoff Nr | UNS Designation |
|---|---|---|
| - | 1.4864 | - |
Size Range
10.0 mm diameter to 0.122mm diameter.
(0.3937” diameter to 0.0048” diameter)
Typical Physical Properties
| Temp. Coeff. Of Resistance Km x 10-6/°C |
Specific Resistance microhm-cm (20°C) |
Density gm/cm3 |
Linear Expansion Coeff. X 10-6 /°C |
|---|---|---|---|
| 360 (20-500 °C) | 105 | 7.95 | 19 (20-1000°C) |
Typical Tensile Strength
| Annealed | |
|---|---|
| Metric | 650-750 N/mm2 |
NiCr 60:15
Alloy Description
NiCr 60:15 is a nickel-chromium-iron resistance alloy with heat resisting strength at high temperatures. This alloy is used in numerous domestic appliances and industrial resistors.
Condition of Supply
NiCr 60:15 is supplied in the following conditions:
- Cold Drawn
- Cold Drawn, Annealed.
Nominal Composition
| Nickel % | Chromium % | Iron % | Carbon | Manganese |
|---|---|---|---|---|
| 60 | 15 | Balance | 0.08 max | 1 max |
Specifications
| British Standard | Werkstoff Nr | ASTM | UNS Designation |
|---|---|---|---|
| - | 2.4667 | B 344 | N06004 |
Size Range
- Wires: 10.0 mm diameter to 0.122mm diameter
- Strips: width: 8 mm-80 mm, thickness: 2.5 mm-0.1 mm
- Ribbons: width: 1 mm-6mm, thickness: 1 mm-0.1 mm
Typical Physical Properties
| Temp. Coeff. Of Resistance Km x 10-6/°C |
Specific Resistance microhm-cm (20°C) |
Density gm/cm3 |
Linear Expansion Coeff. X 10-6 /°C |
|---|---|---|---|
| 170 (20-500 °C) | 112 | 8.2 | 17 (20-1000°C) |
Typical Tensile Strength and elongation
| Annealed | |
|---|---|
| UTS | 600-900 N/mm2 |
| Elongation | >20 |
NiCr 80:20
Alloy Description
NiCr 80:20 is a nickel-chromium alloy that gives remarkable performance till 1200 °C. It is highly recommended for resistance heating elements operating at high temperatures or running under cyclic heating and cooling conditions. It is widely used in industrial furnaces, industrial and domestic applications, wire wound resistors and potentiometers.
Condition of Supply
NiCr 80:20 is supplied in the following conditions:
- Cold Drawn
- Cold Drawn, Bright Annealed
- Cold Drawn, Oxidized Annealed (Green)
Nominal Composition
| Nickel % | Chromium % | Iron % | Silicon % | Manganese |
|---|---|---|---|---|
| Bal | 20 | 1 max | 1-1.50 | 1 max |
Specifications
| DIN Standard | Werkstoff Nr | ASTM | UNS Designation |
|---|---|---|---|
| 17470 / 17471 | 2.4869 | B 344 | N06003 |
Size Range
- Wires: 10.0 mm diameter to 0.050 mm diameter
- Strips: width: 8 mm-80 mm, thickness: 3.2 mm-0.20 mm
- Ribbons: width: 1 mm-6mm, thickness: 1 mm-0.1 mm
Typical Physical Properties
| Temp. Coeff. Of Resistance Km x 10-6/°C |
Specific Resistance microhm-cm (20°C) |
Density gm/cm3 |
Linear Expansion Coeff. X 10-6 /°C |
|---|---|---|---|
| 60 (20-1000 °C) | 112 (DIN 17470) 108 (ASTM B 344) |
8.30 | 17.0 (20-1000°C) |
Typical Tensile Strength and elongation
| Annealed | |
|---|---|
| UTS | 630-900 N/mm2 |
| Elongation | 15-30% (depends upon size) |
Note: Other Grades of heating element and resistance alloys (including NiCr alloys) are also available. Please contact us for more information.
Article coutsey of JLC Electromet Pvt. Ltd., India