C18070 Copper Alloy Strip (CuCrSiTi)
C18070 is a Cr-Si-Ti strengthened copper alloy strip offering excellent electrical & thermal conductivity (≈78% IACS), medium strength and good bendability, together with good resistance to high-temperature softening and stress relaxation — well suited to automotive, consumer-electronics and photovoltaic applications.
Key Features & Advantages
-
78% IACS conductivity / 310 W(m·K) with medium strength.
-
Good bendability for stamped and formed contacts.
- Good softening and stress-relaxation resistance.
- Stable spring performance across the temper range.
- Balanced properties for high-voltage battery and PV hardware.
Typical Applications
- Automotive mobile-connection relays and sockets
- High-voltage battery components
- Circuit breakers and switch parts
- Consumer-electronics and photovoltaic connectors
Equivalent Grades
| GB |
ASTM |
EN |
| TCr0.3-0.2-0.05 |
C18070 |
CuCrSiTi |
Chemical Composition (%)
| Cu |
Cr |
Si |
Ti |
Other |
| 99.0 |
0.15–0.4 |
0.02–0.07 |
0.01–0.4 |
≤0.1 |
Physical Properties
| Density (g/cm³) |
Modulus (GPa) |
Thermal Exp. (×10⁻⁶/K) |
Conductivity (%IACS) |
Thermal Cond. (W/m·K) |
| 8.9 |
138 |
18 |
78 |
310 |
Mechanical Properties (by Temper)
| Temper |
Tensile (MPa) |
Yield (MPa) |
Elong. % (A50) |
Hardness HV |
| R400 |
400–480 |
≥300 |
≥9 |
120–150 |
| R460 |
460–560 |
≥400 |
≥9 |
140–170 |
| R540 |
540–620 |
≥460 |
≥8 |
150–190 |
| R580 |
580–650 |
≥520 |
≥7 |
150–190 |
Available Sizes
Thickness 0.06–5.0 mm · Custom width · Coil or sheet.
Need conductive, bendable C18070 (CuCrSiTi) strip?Automotive, PV & battery grades — free samples and datasheet.
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FAQ
Q: What is C18070 (CuCrSiTi) used for?
Automotive connection relays, sockets, high-voltage batteries, circuit breakers and PV connectors requiring conductivity plus bendability.
Q: What is the conductivity of C18070?
≈78% IACS with a thermal conductivity of 310 W/(m·K).
Q: Does C18070 resist softening and stress relaxation?
Yes — the Cr-Si-Ti additions give good high-temperature softening and stress-relaxation resistance.
EN
