Cr15Ni60/60Ni16Cr/NiCr6015 NiCr Alloys Consistent Performance in
High-Resistance Applications Cr15Ni60 is a high-resistance electric heating alloy characterized
by its excellent high-temperature strength and oxidation
resistance. It primarily consists of 15% chromium and 60% nickel,
with the balance being iron and trace amounts of other elements.
This composition provides the alloy with a stable resistivity that
increases linearly with temperature, making it ideal for
applications requiring precise temperature control. Cr15Ni60
exhibits strong resistance to oxidation, even at temperatures up to
1000°C, due to the formation of a protective chromium oxide layer
that prevents further oxidation. It is widely used in furnaces,
ovens, and other high-temperature equipment where consistent and
reliable heating is critical. The alloy's properties, such as low
thermal expansion and high resistivity, make it a preferred choice
for electric heating elements in various industrial processes. Main characteristics of Ni-Cr and Ni-Cr-Fe electric heating alloys Type
Performance
| Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni80 | Cr20Ni30 | Cr25Ni20 | | Main Chemical composition | Ni | Rest | 55.0-61.0 | 34.0-37.0 | Rest | 30.0-34.0 | 19.0-22.0 | | Cr | 28.0-31.0 | 15.0-18.0 | 18.0-21.0 | 20.0-23.0 | 18.0-21.0 | 24.0-26.0 | | Fe | ≤ 1.0 | Rest | Rest | ≤ 1.0 | Rest | Rest | | Max. continuous service temp. of element (℃) | 1250 | 1150 | 1100 | 1200 | 1100 | 1050 | | Resistivity at 20 ℃(μΩm) | 1.18±0.05 | 1.12±0.05 | 1.04±0.05 | 1.09±0.05 | 1.06±0.05 | 0.95±0.05 | | Density(g/cm3) | 8.10 | 8.20 | 7.90 | 8.40 | 7.90 | 7.15 | | Thermal condyctivity (KJ/m·h·℃) | 45.2 | 45.2 | 43.8 | 60.3 | 43.8 | 43.8 | | Coefficient of lines expansion (α×10-6/℃) | 17.0 | 17.0 | 19.0 | 18.0 | 19.0 | 19.0 | | Melting point (approx.)(℃) | 1380 | 1390 | 1390 | 1400 | 1390 | 1400 | | Elonation at rupture(%) | ＞20 | ＞20 | ＞20 | ＞20 | ＞20 | ＞20 | | Micrographic structure | Austenite | Austenite | Austenite | Austenite | Austenite | Austenite | | Magnetic properties | Non-magnetic | Low-magnetic | Low-magnetic | Non-magnetic | Low-magnetic | Non-magnetic | | Note:The various grades of electric resistance alloy material are
blended with the amountof rare earth, titanium and other trace
elements, to improve the processing performance andextend the
period of the uselife. | |
| Chemical Composition Wt.% Cr15Ni60 | % | Ni | Fe | C | Si | Mn | P | S | Cr | Al | | Min | 55 | | | 0.75 | | | | 15 | | | Max | 61 | Rest | 0.08 | 1.6 | 0.6 | 0.02 | 0.015 | 18 | 0.5 |
| Mechanical properties | Condition | Tensile Strength (UTS)(Rm) | Elongation(A5) | | D>3, T>0.2 | ≥600 MPa | ≥25% | | 0.1<D<0.3, T>0.2 | ≥600 MPa | ≥20% |
Some key features of Cr15Ni60 include: - High Resistance and Temperature Stability: Cr15Ni60 is known for its high electrical resistivity and stable
resistance at room temperature and high temperatures, which is
crucial for precision temperature control applications.
- Excellent High-Temperature Strength: The alloy maintains its strength at high temperatures, with a
melting point of around 1420°C and a retention of mechanical
properties up to 1200°C.
- Good Corrosion Resistance: Thanks to its chromium content, Cr15Ni60 exhibits excellent
resistance to oxidation and corrosion, especially in acidic and
alkaline environments.
- Physical Properties: The alloy has a density of 8.2g/cm³ and a resistivity of
approximately 1.10~1.15µΩ·m, which contributes to its efficient
heat generation and stability.
- Mechanical Strength: Cr15Ni60 demonstrates good mechanical properties, with a tensile
strength of around 600MPa and an elongation rate of 20%-30% at room
temperature.
- Thermal Properties: It has a thermal conductivity of 11.3W/m·K, which helps in
concentrating heat during the heating process.
- Chemical Composition: Comprising primarily of nickel (58-61%) and chromium (14-16%),
with the remainder being iron and trace amounts of other elements
like manganese and silicon.
- Microstructure and Phase Stability: Cr15Ni60 has a single-phase austenitic structure, which
contributes to its stability at high temperatures and resistance to
grain growth and phase transformation.
These characteristics make Cr15Ni60 a valuable material in various
industrial applications, particularly those requiring
high-temperature resistance and stability. Applications: - Precision, Normal, and Shunt Resistors: The alloy is suitable for the production of precision, normal,
and shunt resistors due to its high electrical resistivity and
stable resistance at room temperature and high temperature
- Heating Elements: Cr15Ni60 is used as a heating element, primarily for periodic
heat treatment furnaces with temperatures below 900°C
- High-Grade Electric Heating Pipes and Household Heaters: The alloy is utilized in electric heating wires for high-grade
electric heating pipes and high-grade household electric heaters
- Resistance Tape for High-Quality Resistance Boxes: It is used in resistance tape for high-quality resistance boxes
- Industrial Electric Furnaces: Cr15Ni60 is widely used in industrial electric furnaces,
metallurgy, machinery, and household appliances to produce heating
elements and resistance elements
- Aerospace and High-Temperature Components: The alloy is used in the aerospace industry for high-temperature
components such as gas turbines and jet engine parts that require
resistance to high temperatures and oxidation
- Heat Treatment Equipment: Cr15Ni60 is employed in heat treatment equipment for
manufacturing high-temperature furnace linings and thermocouple
protection tubes, ensuring the accuracy and consistency of heat
treatment processes
These applications highlight the versatility and importance of
Cr15Ni60 in various industries where high-temperature resistance,
stability, and reliability are critical. Technical data of wires | Dia. (mm) | Cross-sectional area (mm²) | Weight/Meter (g/m) | Resistance/Meter at 20 ℃ (Ω/m) | Dia. (mm) | Cross-sectional area (mm²) | Weight/Meter (g/m) | Resistance/Meter at 20 ℃ (Ω/m) | | 0.018 | 0.000255 | 0.002117 | 3410-4610 | 0.25 | 0.04909 | 0.4074 | 20.88-23.54 | | 0.020 | 0.000314 | 0.002606 | 2940-3740 | 0.28 | 0.06158 | 0.5111 | 16.64-18.76 | | 0.022 | 0.000380 | 0.003154 | 2440-3100 | 0.30 | 0.07069 | 0.5867 | 14.49-16.35 | | 0.025 | 0.000491 | 0.004075 | 1880-2400 | 0.32 | 0.07548 | 0.6265 | 12.74-14.36 | | 0.028 | 0.000616 | 0.005113 | 1530-1870 | 0.33 | 0.08553 | 0.7099 | 12.20-13.40 | | 0.030 | 0.000707 | 0.005868 | 1338-1696 | 0.38 | 0.1134 | 0.9412 | 9.13-10.09 | | 0.032 | 0.000804 | 0.006673 | 1180-1440 | 0.40 | 0.1257 | 1.0433 | 8.24-9.108 | | 0.035 | 0.000962 | 0.007985 | 981-1200 | 0.41 | 0.132 | 1.0956 | 7.68-8.89 | | 0.040 | 0.001257 | 0.01043 | 780.7-954.1 | 0.45 | 0.159 | 1.3197 | 6.51-7.196 | | 0.045 | 0.00159 | 0.0132 | 594-726 | 0.50 | 0.1963 | 1.6293 | 5.273-5.829 | | 0.050 | 0.001963 | 0.01629 | 499.6-610.6 | 0.55 | 0.2376 | 1.9721 | 4.518-4.994 | | 0.055 | 0.00238 | 0.01975 | 407-477 | 0.60 | 0.2827 | 2.3464 | 3.797-4.197 | | 0.063 | 0.00312 | 0.02590 | 321.41-377.31 | 0.65 | 0.3318 | 2.7539 | 3.235-3.575 | | 0.070 | 0.00385 | 0.03196 | 260.5-305.9 | 0.70 | 0.3848 | 3.1938 | 2.789-3.083 | | 0.080 | 0.005027 | 0.04172 | 199.5-234.1 | 0.75 | 0.4418 | 3.6669 | 2.43-2.686 | | 0.090 | 0.006362 | 0.0528 | 157.6-185.0 | 0.80 | 0.5027 | 4.1724 | 2.136-2.36 | | 0.100 | 0.007854 | 0.0652 | 127.7-149.9 | 0.85 | 0.5674 | 4.7094 | 1.891-2.091 | | 0.110 | 0.009852 | 0.08177 | 105.5-123.9 | 0.90 | 0.6362 | 5.2805 | 1.687-1.865 | | 0.120 | 0.01227 | 0.1018 | 88.67-104.1 | 0.95 | 0.7088 | 5.883 | 1.46-1.62 | | 0.140 | 0.01539 | 0.1277 | 65.85-75.77 | 1.00 | 0.7854 | 6.5188 | 1.367-1.511 | | 0.150 | 0.01767 | 0.1467 | 56.75-66.63 | 1.10 | 0.9503 | 7.8875 | 1.13-1.26 | | 0.160 | 0.02011 | 0.01669 | 50.42-58.00 | 1.12 | 0.9852 | 8.1772 | 1.05-1.17 | | 0.170 | 0.022700 | 0.1884 | 44.18-51.86 | 1.18 | 1.0936 | 9.0769 | 0.95-1.05 | | 0.180 | 0.02545 | 0.2112 | 40.26-45.40 | 1.20 | 1.313 | 10.8979 | 0.79-0.87 | | 0.190 | 0.02835 | 0.2353 | 35.37-41.53 | 1.30 | 1.327 | 11.0141 | 0.78-0.86 | | 0.200 | 0.03142 | 0.2608 | 32.62-36.78 | 1.40 | 1.539 | 12.7737 | 0.70-0.77 | | 0.212 | 0.035300 | 0.2930 | 28.41-33.35 | 1.50 | 1.767 | 14.6661 | 0.60-0.67 | | 0.220 | 0.03801 | 0.3155 | 26.65-30.39 | 1.60 | 2.011 | 16.8924 | 0.52-0.58 |
The tolerance or wires diameter | Wires | Dia.(mm) | Tolerance | | 0.018-0.025 | ±0.001 | | 0.028-0.035 | ±0.0015 | | 0.040-0.055 | ±0.002 | | 0.070 | ±0.0025 | | 0.08-0.10 | ±0.003 | | 0.11-0.14 | ±0.004 | | 0.16-0.20 | ±0.005 | | 0.22-0.25 | ±0.006 | | 0.28-0.30 | ±0.007 | | 0.32-0.40 | ±0.01 | | 0.41-0.50 | ±0.015 | | 0.55-0.80 | +0.02/-0.03 | | 0.85-1.00 | +0.02/-0.03 | | 1.10-1.50 | ±0.03 | | Note:special specification can be produced as per client's request. |
Technical data of ribbon | Thickness × Width(mm) | Resistance/meter(20 ℃) (Ω/m) | Surface area/ohm (20℃) (cm2/Ω) | Weight/meter (g/m) | Surface area/meter (cm2/m) | | 0.09x2.5 | 5.27 | 9.84 | 1.72 | 51.8 | | 0.08x0.2 | 74 | 0.0756 | 0.122 | 5.6 | | 0.08x0.3 | 49.4 | 0.154 | 0.183 | 7.6 | | 0.08x0.4 | 37 | 0.259 | 0.244 | 9.6 | | 0.08x0.5 | 29.6 | 0.392 | 0.305 | 11.6 | | 0.08x0.6 | 24.7 | 0.551 | 0.367 | 13.6 | | 0.08x0.7 | 21.2 | 0.737 | 0.428 | 15.6 | | 0.08x0.8 | 18.5 | 0.951 | 0.489 | 17.6 | | 0.08x0.9 | 16.5 | 1.19 | 0.55 | 19.6 | | 0.08x1.0 | 14.8 | 1.46 | 0.611 | 21.6 | | 0.08x1.2 | 12.3 | 2.07 | 0.733 | 25.6 | | 0.08x1.5 | 9.87 | 3.2 | 0.916 | 31.6 | | 0.08x1.8 | 8.23 | 4.57 | 1.1 | 37.6 | | 0.08x2.0 | 7.4 | 5.62 | 1.22 | 41.6 | | 0.07x0.2 | 84.6 | 0.0638 | 0.107 | 5.4 | | 0.07x0.3 | 56.4 | 0.131 | 0.16 | 7.4 | | 0.07x0.4 | 42.3 | 0.222 | 0.214 | 9.4 | | 0.07x0.5 | 33.9 | 0.337 | 0.267 | 11.4 | | 0.07x0.6 | 28.2 | 0.475 | 0.321 | 13.4 | | 0.07x0.7 | 24.2 | 0.637 | 0.374 | 15.4 | | 0.07x0.8 | 21.2 | 0.822 | 0.428 | 17.4 | | 0.07x0.9 | 18.8 | 1.03 | 0.481 | 19.4 | | 0.07x1.0 | 16.9 | 1.26 | 0.535 | 21.4 | | 0.07x1.2 | 14.1 | 1.8 | 0.641 | 25.4 | | 0.07x1.5 | 11.3 | 2.78 | 0.802 | 31.4 | | 0.06x0.2 | 98.7 | 0.0527 | 0.0916 | 5.2 | | 0.06x0.3 | 65.8 | 0.109 | 0.137 | 7.2 | | 0.06x0.4 | 49.4 | 0.186 | 0.183 | 9.2 | | 0.06x0.5 | 39.5 | 0.284 | 0.229 | 11.2 | | 0.06x0.6 | 32.9 | 0.401 | 0.275 | 13.2 | | 0.06x0.7 | 28.2 | 0.539 | 0.321 | 15.2 | | 0.06x0.8 | 24.7 | 0.697 | 0.367 | 17.5 | | 0.06x0.9 | 21.9 | 0.875 | 0.412 | 19.2 | | 0.06x1.0 | 19.7 | 1.07 | 0.458 | 21.2 | | 0.06x1.2 | 16.5 | 1.53 | 0.55 | 25.2 | | 0.05x0.2 | 118 | 0.0422 | 0.0764 | 5.00 | | 0.05x0.3 | 79 | 0.0886 | 0.115 | 7.00 | | 0.05x0.4 | 59.2 | 0.152 | 0.153 | 9.00 | | 0.05x0.5 | 47.4 | 0.232 | 0.191 | 11.00 | | 0.05x0.6 | 39.5 | 0.329 | 0.229 | 13.00 | | 0.05x0.7 | 33.9 | 0.443 | 0.267 | 15.0 | | 0.05x0.8 | 29.6 | 0.574 | 0.305 | 17.0 | | 0.05x0.9 | 16.3 | 0.722 | 0.344 | 19.0 | | 0.05x1.0 | 23.7 | 0.886 | 0.382 | 21.0 | | Ribbon is rolled by the wire, the actual cross-sectional area of
the ribbon is smaller 8％ than calculated by the rectangular. |
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