C70318 C70300 C70500 C70600 C71000 CUNISICO Copper Nickel Silicion Alloy Strip
CHEMICAL COMPOSITION
| Ni% | Si% | Co% | Cu% | other | |
| Nominal Composition | Bal. | ||||
| Min | 2.6 | 0.6 | 0.8 | ||
| Max | 3.4 | 1.2 | 1.2 | 0.5 |
PHYSICAL PROPERTIES
| Density g/cm3 | 8.82 |
| Conductivity at 20°C %IACS | 50 |
| Elastic Modulus GPa | 130 |
| Poisson's ratio | 0.33 |
| Thermal expansion coefficient 10-6/ K | 17.6 |
MECHANICAL PROPERTIES
| State | Yield strength | Tensile strength | Elongation | Hardness |
| Mpa | MPa | A50% | HV | |
| R690 | ≥680 | 690-830 | ≥6 | ≥200 |
| R770 | ≥750 | 770-900 | ≥4 | ≥220 |
| R840 | ≥810 | 840-970 | ≥1 | ≥240 |
| R920 | ≥880 | 920-1060 | ≥1 | ≥260 |
| R960 | ≥940 | 980-1120 | ≥1 | ≥280 |
Bending performance
Bending thickness: ≤0.5 mm, bending width: 10 mm
| State | 90° R/T | 180° R/T | ||
| GW | BW | GW | BW | |
| R690 | 0 | 0 | - | - |
| R770 | 0.5 | 0.5 | - | - |
| R840 | 1.0 | 1.0 | - | - |
| R920 | 1.0 | 1.0 | - | - |
| R960 | 3.0 | 3.0 | - | - |
|
Alloy System |
designation |
UNS |
EN |
JIS |
GB (China) |
| Cu | TK11000 | C11000 | Cu-ETP | C1100 | T2 |
|
CuCr/Zr |
TK15100 | C15100 | CuZr0.1 | C1510 | TZr0.1 |
| TK18160 | C18160 | CuCr0.5Zr | — | ||
| TK18150 | C18150 | CuCr1Zr | — | TCr1-0.15 | |
| CuCrSiTi | TK18070 | C18070 | CuCrSiTi |
— |
TCr0.3-0.2- 0.05 |
| CuNiSnCrTi | TK18090 | — | — | — | |
| CuNiP | TK19000 | C19000 | CuNi1P | — | |
| CuTi | TK19920 | C19920 | — | — | — |
|
CuFe |
TK19210 | C19210 | CuFe0.1P | C1921 | TFe0.1 |
| TK19400 | C19400 | CuFe2P | C1940 | TFe2.5 | |
|
CuNiSi |
TK19005 | C19005 | — | — | — |
| TK19010 | C19010 | CuNiSi | — | — | |
| TK70260 | C70260 | CuNi2Si | C7026 | BSi2-0.45 | |
| TK70250 | C70250 | CuNi3SiMg | C7025 | BSi3.2-0.7 | |
| TK70250HS | C70250 | CuNi4SiMg | C7025 | — | |
| CuNiCoSi | TK70318 | C70318 | CuNi3CoSi | — | — |
|
Special Brass |
TK42300 | C42300 | CuZn10Sn1NiSi | — | — |
| TK42500 | C42500 | CuSn3Zn9 | — | HSn88-2 | |
|
CuSn / Bronze
|
TK14415 | C14415 | CuSn0.15 | — | TSn0.12 |
| TK51000 | C51000 | CuSn5 | C5102 | QSn5-0.2 | |
| TK51100* | C51100 | CuSn4 | C5111 | QSn4-0.3 | |
| TK51900* | C51900 | CuSn6 | C5191 | QSn6-0.2 | |
| TK52100* | C52100 | CuSn8 | C5210 | QSn8-0.3 |
Copper-nickel strips, made from cupronickel alloys, are used in various applications due to their excellent corrosion resistance, mechanical properties, and thermal conductivity. Here are some key features and characteristics of copper-nickel strips:
Key Properties
-
Composition:
- Commonly available in various ratios, such as:
- May also contain small amounts of iron and manganese for improved properties.
-
Corrosion Resistance:
- Exceptional resistance to seawater and acidic environments, making them ideal for marine applications.
-
Mechanical Properties:
- Good tensile strength and ductility, allowing for easy forming and fabrication.
- Retains strength at elevated temperatures.
-
Thermal and Electrical Conductivity:
- Moderate thermal and electrical conductivity, suitable for heat exchangers and electrical components.
Common Applications
-
Marine Industry: Used in shipbuilding, heat exchangers, and piping systems due to their durability in seawater.
-
Electrical Components: Employed in connectors and terminals where corrosion resistance and conductivity are essential.
-
Heat Exchangers: Ideal for cooling systems in various industrial applications.
Fabrication
Copper-nickel strips can be processed through various methods, including:
- Cutting: Available in different lengths and widths.
- Bending and Forming: Easily shaped for specific applications.
- Welding: Can be welded using appropriate techniques for copper-nickel alloys.
Get in Touch
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