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C70318
C70318 is a copper-nickel alloy, also known as copper-nickel 90/10. Here’s an overview of its properties, composition, and applications:
C70318 is a copper-nickel alloy known for its excellent corrosion resistance, strength, and ductility, making it ideal for a variety of marine and industrial applications.
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 |