C19400 is an iron-phosphorus strengthened copper alloy strip offering moderate strength and elasticity with excellent electrical conductivity (≈60% IACS) and strong stress-relaxation resistance. It is one of the most widely specified strip alloys for connectors, power terminals and lead frames, and is available hot-dip / electro tin-plated (1–6 μm).
Key Features & Advantages
-
60% IACS conductivity with dependable spring performance.
-
Excellent stress-relaxation resistance for long-term contact reliability.
-
Optional tin coating 1–6 μm — solderable, corrosion-protected surface.
- Great stamping / forming behaviour for high-volume production.
- Proven, mass-produced grade with stable supply.
Typical Applications
- Connectors, power terminals and automotive components
- Semiconductor & LED lead frames
- Stamped parts and busbar tabs
- Electrical / electronic hardware
Equivalent Grades
| GB |
ASTM |
JIS |
| TFe2.5 |
C19400 |
C1940 |
Chemical Composition (%)
| Cu |
Fe |
P |
Zn |
| Balance |
2.1–2.6 |
0.015–0.15 |
0.05–0.2 |
Physical Properties
| Density (g/cm³) |
Modulus (GPa) |
Thermal Exp. (×10⁻⁶/K) |
Conductivity (%IACS) |
Thermal Cond. (W/m·K) |
| 8.91 |
121 |
16.3 |
60 |
260 |
Mechanical Properties (by Temper)
| Temper |
Tensile Rm (MPa) |
Elong. % (A11.3) |
Hardness HV |
| O60 |
300–380 |
≥20 |
90–110 |
| H01 |
320–400 |
≥15 |
100–120 |
| H02 |
365–430 |
≥6 |
115–135 |
| H04 |
410–490 |
≥5 |
125–145 |
| H06 |
450–500 |
≥3 |
135–150 |
| H08 |
480–530 |
≥2 |
140–155 |
| H10 |
≥500 |
≥2 |
≥145 |
Available Sizes & Surface
Thickness 0.08–2.0 mm · Bare or tin-plated 1–6 μm · Custom width, coil or sheet.
Need bare or tin-plated C19400 (CuFe2P) strip?Reliable mass-production supply for connectors & lead frames — samples on request.
Get a Quote
FAQ
Q: What is C19400 copper strip used for?
C19400 (CuFe2P / C1940) is used for connectors, power terminals, automotive parts and semiconductor / LED lead frames requiring conductivity plus stress-relaxation resistance.
Q: Can C19400 be supplied tin-plated?
Yes. It is available with hot-dip / electroplated tin layers of 1–6 μm.
Q: What is the conductivity of C19400?
Approximately 60% IACS with a thermal conductivity of 260 W/(m·K).
EN
