C14415 Copper Tin Alloy Strip (CuSn0.15)
C14415 is a low-tin copper-tin alloy strip with electrical conductivity close to that of pure copper (≈83% IACS) but improved mechanical properties and corrosion resistance. It is widely used for lead frames of power ICs, automotive radiators, refrigeration heat sinks and switch sockets.
Key Features & Advantages
-
High conductivity ≈83% IACS / 330 W(m·K), near-pure-copper current capacity.
-
Better strength & corrosion resistance than pure copper.
- Good bendability for stamping and heat-sink forming.
- Stable performance under thermal cycling.
- Excellent for high-heat-dissipation electronics.
Typical Applications
- Lead frames for power ICs (chips)
- Automotive radiators
- Refrigeration heat sinks & fins
- Switch sockets and electrical hardware
Equivalent Grades
| GB |
ASTM |
JIS |
EN |
| TSn0.12 |
C14415 |
C1441 |
CuSn0.15 |
Chemical Composition (%)
Physical Properties
| Density (g/cm³) |
Modulus (GPa) |
Thermal Exp. (×10⁻⁶/K) |
Conductivity (%IACS) |
Thermal Cond. (W/m·K) |
| 8.93 |
120 |
17.3 |
83 |
330 |
Mechanical Properties (by Temper)
| Temper |
Tensile (MPa) |
Yield (MPa) |
Elong. % (A50) |
Hardness HV |
| R300 |
300–370 |
≥250 |
≥4 |
85–110 |
| R360 |
360–430 |
≥300 |
≥3 |
110–130 |
| R420 |
420–490 |
≥350 |
≥3 |
120–150 |
| R460 |
≥460 |
≥410 |
— |
≥130 |
Available Sizes
Thickness 0.08–3.5 mm · Custom width · Coil or sheet.
Need near-pure-copper conductivity with C14415 (CuSn0.15) strip?Power-IC lead-frame & radiator grades — samples on request.
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FAQ
Q: What is C14415 (CuSn0.15) used for?
Lead frames for power ICs, automotive radiators, refrigeration heat sinks and switch sockets that need high conductivity with better strength.
Q: What is the conductivity of C14415?
≈83% IACS with a thermal conductivity of 330 W/(m·K).
Q: How is C14415 different from pure copper?
A small tin addition (0.10–0.15%) improves strength and corrosion resistance while keeping conductivity close to pure copper.
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