CuNi2 NC005 2.0802 Cupronickel Wire Perfect Solution For Stress Corrosion Cracking And Pitting Resistance
CuNi2, a copper-nickel alloy containing approximately 2% nickel, is a versatile material known for its combination of good corrosion resistance, moderate mechanical strength, and excellent thermal and electrical conductivity. This alloy is particularly suited for applications requiring durability, ease of fabrication, and stable performance under various environmental conditions.
With a composition of 98% copper and 2% nickel, CuNi2 retains most of copper's desirable properties while benefiting from the addition of nickel. The nickel content improves its resistance to oxidation and corrosion, particularly in moist or mildly aggressive environments.
GB | ISO | ASTM | DIN/EN | JIS | GOST | AS |
CuNi2 NC005 | CuNi2Si | C70260 | CuNi2 2.0802 C70260 | C7026 C70260 | MH2 | 702B C70260 |
Max continuous operating temperature ℃ | 200 |
Resistance temperature coefficient x 10-5/℃(20℃-600℃) | <120 |
Thermovoltage to copper at 20℃ in μV/K | -12 |
Thermal expansion coefficient ×10-6/K(20℃-400℃) | 17.5 |
Thermal conductance at 20℃ W/mK | 130 |
Specific heat capacity at 20℃ J/gK | 0.38 |
Some key features of CuNi2 include:
Provides enhanced resistance to tarnishing and corrosion compared to pure copper, making it suitable for mildly corrosive environments.
Maintains excellent conductivity for heat and electricity, making it ideal for applications such as electrical wiring and heat exchangers.
Highly malleable and easy to fabricate, allowing for production in various forms like wires, sheets, and rods.
Slightly stronger than pure copper while retaining good flexibility and toughness.
Offers a pleasing reddish appearance, often used in decorative or architectural applications.
Applications:
Used in connectors, conductors, and cables, where high electrical conductivity and corrosion resistance are essential.
Ideal for thermal applications due to its high thermal conductivity and ability to withstand moderate environmental conditions.
Commonly used in minting coins and tokens for its aesthetic appeal, corrosion resistance, and machinability.
Found in architectural elements, ornamental pieces, and jewelry, where its color and resistance to tarnish are valued.
Utilized in components like radiators, fuel lines, and hydraulic systems, where conductivity and corrosion resistance are beneficial.
Occasionally used in non-critical marine components due to its ability to resist mild seawater corrosion.
CuNi2 is a durable and efficient material that offers a balance between the properties of pure copper and the enhanced corrosion resistance of nickel. Its excellent conductivity, workability, and corrosion resistance make it an ideal choice for a variety of industrial, electrical, and decorative applications, ensuring reliable performance and longevity in diverse environments.
Main technical data
Type | CuNi1 NC003 | CuNi2 NC005 | CuNi4 NC007 | CuNi6 NC010 | CuNi8 NC012 | CuMn3 NC012 | CuNi10 NC015 | CuNi14 NC020 | CuNi19 NC025 | CuNi23 NC030 | CuNi30 NC035 | CuNi34 NC040 | CuNi44 NC050 | |
Composition(%) | Cu | Rest | Rest | Rest | Rest | Rest | Rest | Rest | Rest | Rest | Rest | Rest | Rest | Rest |
Mn | / | / | / | / | / | 3 | / | 0.3 | 0.5 | 0.5 | 1.0 | 1.0 | 1.0 | |
Ni | 1 | 2 | 4 | 6 | 8 | 10 | 14.2 | 19 | 23 | 30 | 34 | 44 | ||
Max.continuous operating temperature(℃) | 200 | 200 | 200 | 220 | 250 | 200 | 250 | 300 | 300 | 300 | 350 | 350 | 400 | |
Resistivity at 20℃(μ m) | 0.03 ±10% | 0.05 ±10% | 0.07 ±10% | 0.10 ±10% | 0.12 ±10% | 0.12 ±10% | 0.15 ±10% | 0.20 ±5% | 0.25 ±5% | 0.30 ±5% | 0.35 ±5% | 0.40 ±5% | 0.49 ±5% | |
Resisitance-temperature coefficient 20-600℃ (×10-5/℃) | < 100 | < 120 | < 50 | < 60 | < 57 | < 38 | < 50 | < 38 | < 25 | < 16 | < 10 | < -0 | < -6 | |
Thermovoltage to copper at 20℃ in (μV/K) | -8 | -12 | -12 | -18 | -22 | 1 | -25 | -28 | -32 | -34 | -37 | -39 | -43 | |
Mean coefficient of linear thermal expansion, in (10-6/K) , at a temperature between 20 ℃ and 400 ℃ | 17.5 | 17.5 | 17.5 | 17.5 | 17.5 | 18 | 17.5 | 17.5 | 17.5 | 17.5 | 17.0 | 16.0 | 15.0 | |
Thermal conductance at 20℃ (W/mK) | 145 | 130 | 130 | 92 | 75 | 84 | 59 | 48 | 38 | 33 | 27 | 25 | 23 | |
Specific heat capacity at 20℃ in (20℃ J/gK) | 0.38 | 0.38 | 0.38 | 0.38 | 0.38 | 0.39 | 0.38 | 0.38 | 0.38 | 0.38 | 0.39 | 0.40 | 0.41 | |
Density at 20 ℃(g/cm3) | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.8 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | |
Melting temperature in (℃) | 1085 | 1090 | 1090 | 1095 | 1097 | 1050 | 1100 | 1115 | 1135 | 1150 | 1170 | 1180 | 1280 | |
Min.tensile strength in (N/mm2) | 210 | 220 | 220 | 250 | 270 | 290 | 290 | 310 | 340 | 350 | 400 | 400 | 420 | |
Elongation(%) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Technical data table
Diameter(mm) | NC003 CuNi1 | NC005 CuNi2 | NC007 CuNi4 | NC010 CuNi6 | NC012 CuNi8 | NC015 CuNi10 | NC020 CuNi14 | NC025 CuNi19 | NC030 CuNi23 | NC035 CuNi30 | NC040 CuNi34 | NC050 CuNi44 |
0.10 | 3.82 | 6.36 | 8.91 | 12.73 | 15.28 | 19.09 | 25.46 | 31.83 | 38.19 | 44.56 | 50.93 | 62.39 |
0.11 | 3.16 | 5.26 | 7.37 | 10.52 | 12.63 | 15.78 | 21.04 | 26.30 | 31.56 | 36.82 | 42.09 | 51.56 |
0.12 | 2.65 | 4.42 | 6.19 | 8.84 | 10.61 | 13.26 | 17.68 | 22.10 | 26.52 | 30.94 | 35.37 | 43.33 |
0.13 | 2.26 | 3.76 | 5.27 | 7.53 | 9.04 | 11.30 | 15.07 | 18.83 | 22.60 | 26.36 | 30.14 | 36.92 |
0.14 | 1.95 | 3.24 | 4.55 | 6.49 | 7.80 | 9.74 | 12.99 | 16.24 | 19.48 | 22.73 | 25.98 | 31.83 |
0.15 | 1.70 | 2.82 | 3.96 | 5.65 | 6.79 | 8.48 | 11.31 | 14.14 | 16.97 | 19.80 | 22.64 | 27.73 |
0.16 | 1.49 | 2.48 | 3.48 | 4.97 | 5.97 | 7.46 | 9.95 | 12.43 | 14.92 | 17.40 | 19.89 | 24.37 |
0.17 | 1.32 | 2.20 | 3.08 | 4.40 | 5.29 | 6.60 | 8.81 | 11.01 | 13.21 | 15.41 | 17.62 | 21.59 |
0.18 | 1.18 | 1.96 | 2.75 | 3.92 | 4.72 | 5.89 | 7.86 | 9.82 | 11.78 | 13.75 | 15.72 | 19.26 |
0.19 | 1.06 | 1.76 | 2.47 | 3.52 | 4.23 | 5.29 | 7.05 | 8.81 | 10.58 | 12.34 | 14.11 | 17.28 |
0.20 | 0.95 | 1.59 | 2.23 | 3.18 | 3.82 | 4.77 | 6.36 | 7.95 | 9.54 | 11.14 | 12.73 | 15.60 |
0.21 | 0.87 | 1.44 | 2.02 | 2.88 | 3.46 | 4.33 | 5.77 | 7.21 | 8.66 | 10.10 | 11.55 | 14.15 |
0.22 | 0.79 | 1.31 | 1.84 | 2.63 | 3.16 | 3.94 | 5.26 | 6.57 | 7.89 | 9.20 | 10.52 | 12.89 |
0.23 | 0.72 | 1.20 | 1.68 | 2.40 | 2.89 | 3.61 | 4.81 | 6.01 | 7.22 | 8.42 | 9.63 | 11.79 |
0.24 | 0.66 | 1.10 | 1.55 | 2.21 | 2.65 | 3.31 | 4.42 | 5.52 | 6.63 | 7.73 | 8.84 | 10.83 |
0.25 | 0.61 | 1.01 | 1.43 | 2.03 | 2.44 | 3.05 | 4.07 | 5.09 | 6.11 | 7.13 | 8.15 | 9.98 |
0.26 | 0.57 | 0.94 | 1.32 | 1.88 | 2.26 | 2.82 | 3.77 | 4.70 | 5.65 | 6.59 | 7.53 | 9.23 |
0.27 | 0.52 | 0.87 | 1.22 | 1.74 | 2.10 | 2.61 | 3.49 | 4.36 | 5.23 | 6.11 | 6.99 | 8.56 |
0.28 | 0.49 | 0.81 | 1.14 | 1.62 | 1.95 | 2.43 | 3.25 | 4.06 | 4.87 | 5.68 | 6.50 | 7.96 |
0.29 | 0.45 | 0.75 | 1.06 | 1.51 | 1.82 | 2.27 | 3.03 | 3.78 | 4.54 | 5.29 | 6.06 | 7.42 |
0.30 | 0.42 | 0.70 | 0.99 | 1.41 | 1.70 | 2.12 | 2.83 | 3.53 | 4.24 | 4.95 | 5.66 | 6.93 |
0.31 | 0.40 | 0.66 | 0.93 | 1.32 | 1.59 | 1.98 | 2.65 | 3.31 | 3.97 | 4.63 | 5.30 | 6.49 |
0.32 | 0.37 | 0.62 | 0.87 | 1.24 | 1.49 | 1.86 | 2.49 | 3.11 | 3.73 | 4.35 | 4.97 | 6.09 |
0.33 | 0.35 | 0.58 | 0.82 | 1.17 | 1.40 | 1.75 | 2.34 | 2.92 | 3.51 | 4.09 | 4.68 | 5.73 |
0.34 | 0.33 | 0.55 | 0.77 | 1.10 | 1.32 | 1.65 | 2.20 | 2.75 | 3.30 | 3.85 | 4.41 | 5.40 |
0.35 | 0.31 | 0.51 | 0.73 | 1.03 | 1.25 | 1.55 | 2.08 | 2.60 | 3.11 | 3.63 | 4.16 | 5.09 |
0.36 | 0.29 | 0.49 | 0.69 | 0.98 | 1.18 | 1.47 | 1.96 | 2.46 | 2.94 | 3.43 | 3.93 | 4.81 |
0.37 | 0.28 | 0.46 | 0.65 | 0.93 | 1.12 | 1.39 | 1.86 | 2.33 | 2.79 | 3.25 | 3.72 | 4.56 |
0.38 | 0.26 | 0.44 | 0.62 | 0.88 | 1.06 | 1.32 | 1.76 | 2.20 | 2.64 | 3.08 | 3.53 | 4.32 |
0.40 | 0.24 | 0.39 | 0.56 | 0.79 | 0.95 | 1.19 | 1.59 | 1.99 | 2.38 | 2.78 | 3.18 | 3.90 |
0.41 | 0.23 | 0.37 | 0.53 | 0.76 | 0.91 | 1.13 | 1.51 | 1.89 | 2.27 | 2.65 | 3.03 | 3.71 |
0.42 | 0.22 | 0.36 | 0.51 | 0.72 | 0.87 | 1.08 | 1.44 | 1.80 | 2.16 | 2.52 | 2.89 | 3.54 |
0.43 | 0.21 | 0.34 | 0.48 | 0.69 | 0.83 | 1.03 | 1.38 | 1.72 | 2.06 | 2.41 | 2.75 | 3.37 |
0.44 | 0.20 | 0.32 | 0.46 | 0.66 | 0.79 | 0.98 | 1.31 | 1.64 | 1.97 | 2.30 | 2.63 | 3.22 |
0.45 | 0.19 | 0.31 | 0.44 | 0.63 | 0.75 | 0.94 | 1.26 | 1.57 | 1.88 | 2.20 | 2.52 | 3.08 |
0.46 | 0.18 | 0.30 | 0.42 | 0.60 | 0.72 | 0.90 | 1.20 | 1.50 | 1.80 | 2.10 | 2.41 | 2.95 |
0.47 | 0.17 | 0.28 | 0.40 | 0.58 | 0.69 | 0.86 | 1.15 | 1.44 | 1.72 | 2.01 | 2.31 | 2.82 |
0.48 | 0.17 | 0.27 | 0.39 | 0.55 | 0.66 | 0.82 | 1.10 | 1.38 | 1.65 | 1.93 | 2.21 | 2.71 |
0.49 | 0.16 | 0.26 | 0.37 | 0.53 | 0.64 | 0.79 | 1.06 | 1.33 | 1.59 | 1.85 | 2.12 | 2.60 |
0.50 | 0.15 | 0.25 | 0.36 | 0.51 | 0.61 | 0.76 | 1.01 | 1.27 | 1.52 | 1.78 | 2.04 | 2.50 |
0.51 | 0.15 | 0.24 | 0.34 | 0.49 | 0.59 | 0.73 | 0.98 | 1.22 | 1.46 | 1.71 | 1.96 | 2.40 |
0.52 | 0.14 | 0.23 | 0.33 | 0.47 | 0.57 | 0.70 | 0.94 | 1.18 | 1.41 | 1.65 | 1.88 | 2.31 |
0.53 | 0.14 | 0.22 | 0.32 | 0.45 | 0.54 | 0.67 | 0.91 | 1.13 | 1.35 | 1.59 | 1.81 | 2.22 |
0.54 | 0.13 | 0.22 | 0.31 | 0.44 | 0.52 | 0.65 | 0.87 | 1.09 | 1.30 | 1.53 | 1.75 | 2.14 |
0.55 | 0.13 | 0.21 | 0.29 | 0.42 | 0.51 | 0.63 | 0.84 | 1.05 | 1.26 | 1.47 | 1.68 | 2.06 |
0.56 | 0.12 | 0.20 | 0.28 | 0.41 | 0.49 | 0.60 | 0.81 | 1.02 | 1.21 | 1.42 | 1.62 | 1.99 |
0.57 | 0.12 | 0.19 | 0.27 | 0.39 | 0.47 | 0.58 | 0.78 | 0.98 | 1.17 | 1.37 | 1.57 | 1.92 |
0.58 | 0.11 | 0.19 | 0.27 | 0.38 | 0.45 | 0.56 | 0.76 | 0.95 | 1.13 | 1.32 | 1.51 | 1.85 |
0.59 | 0.11 | 0.18 | 0.26 | 0.37 | 0.44 | 0.54 | 0.73 | 0.91 | 1.09 | 1.28 | 1.46 | 1.79 |
0.60 | 0.11 | 0.18 | 0.25 | 0.35 | 0.42 | 0.53 | 0.71 | 0.88 | 1.06 | 1.24 | 1.41 | 1.73 |