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Nichrome Resistance Heating Wires
NIckel Resistance Wires
Electric Resistance Heating wires or strips,
electro-thermal wires or strips,
Heating Wires
Nichrome Resistance Heating Wires
Nichrome wires or strips
Cr20Ni80,Cr30Ni70,Cr20Ni35,Cr20Ni30,Cr15Ni60,etc.
TYPE Property | Cr15Ni60 | Cr20Ni80 | Cr20Ni30 |
Main Chemical Composition(%) | 15-18 | 20-23 | 18-21 |
55-61 | Rest | 30-34 | |
Rest | -- | Rest | |
Max continuous service Temp.of elements | 1100 | 1150 | 1100 |
Density(g/cm3) | 8.2 | 8.4 | 7.9 |
Melting point(approx ) | 1390 | 1400 | 1390 |
Elongating(%) | 20 | 20 | 30 |
Resistivity at 20 | 1.12-1.15±0.05 | 1.09-1.14±0.05 | 1.04-1.06±0.05 |
Micrographic structure | Austenite A | Austenite A | Austenite A |
Alloy Description
NiCr 80:20 – Industrial furnaces (upto 1200°C), electric cooking equipment, precision resistors.
NiCr 70:30 – Industrial furnaces (upto 1230°C) with alternating oxidizing/reducing atmosphere, precision resistors.
NiCr 60:15 – Industrial furnaces (upto 1100°C), electrically heated equipment, high-resistance and potentiometer resistors.
NiCr 40:20 – Domestic heating appliances (upto 1050°C), furnaces in carburising or semi-reducing atmosphere.
NiCr 30:20/ NiCr 20:25 – Industrial furnaces (upto 1050°C), heating elements of cooking equipment.
Condition of SupplyNiCr alloys are available in following conditions:
Bright AnnealedOxidized AnnealedBright DrawnNominal Composition
Bal. | Max 1.0 | Max 1.0 | 1.00 - 1.50 | 19 - 21 | Max 0.10 |
Bal. | Max 1.0 | Max 1.0 | 1.00 - 1.50 | 28 - 32 | Max 0.10 |
Min 57.0 | Max 1.0 | Bal. | 1.00 - 1.50 | 14 - 17 | Max 0.10 |
Min 37.0 | Max 1.0 | Bal. | 1.80 - 3.00 | 18 - 22 | Max 0.10 |
Min 28.0 | Max 1.0 | Bal. | 1.80 - 3.00 | 18 - 22 | Max 0.10 |
Min 18.0 | Max 1.0 | Bal. | 1.00 - 1.50 | 23 - 27 | Max 0.10 |
Properties
108 | 8.4 | 17.0 | 1200 |
118 | 8.2 | 17.0 | 1250 |
112 | 8.2 | 17.0 | 1100 |
105 | 7.9 | 19. | 1050 |
104 | 7.9 | 19.0 | 1000 |
95 | 7.8 | 17.0 | 1000 |
For Resistance (in Ω/m) of any size, divide the above resistivity with
(cross-sectional area in mm² of that size x 100).
R (Ω/m) = Resistivity (µΩ-cm) / A (in mm²) x 100
Size Range
700-900 | 800-950 | 700-850 | 700-850 | 650-800 | 600-800 |
25-35 | 25-30 | 25-35 | 25-35 | 25-35 | 25-35 |
Note: Other Grades of Nickel-Chromium resistance alloys are also available. Please contact us for more information.
Chromel A, Nikrothal 80, N8, Nichrome V, HAI-NiCr 80, Tophet A, Resistohm 80, Cronix 80, Protoloy, Nikrothal 8, Alloy A, MWS-650, Stablohm 650, NCHW1 Nikrothal 70, Chromel 70/30, N7, Hytemco, HAI-NiCr 70, Balco, Tophet 30, Resistohm 70, Cronix 70, Stablohm 710 Chromel C, Nikrothal 60, N6, HAI-NiCr 60, Tophet C, Resistohm 60, Cronifer II, Electroloy, Nichrome, Alloy C, Nikrothal 6, MWS-675, Stablohm 675, NCHW2 Chromel D, Nikrothal 40, N4, Chromax, HAI-NiCr 40, Tophet D, Resistohm 40, Cronifer III, 35-20 Ni-Cr, Alloy D, Nikrothal 4, MWS-610, Stablohm 610,nichrome ribbon