Civen Metal Material (Shanghai) Co., Ltd. is one of the leading manufacturers and suppliers of copper strip for lead frame in China. Welcome to buy bulk durable copper strip for lead frame made in China here from our factory. If you have any enquiry about cooperation, please feel free to email us.
Product Introduction
alance of strength, electrical conductivity, thermal conductivity and formability.
CIVEN Metal lists three lead frame material grades: C192/KFC, C194 and C7025. C192/KFC and C194 are copper-iron-phosphorus alloys, while the current technical table lists nickel, silicon and magnesium for C7025. The published data allows buyers to compare their composition and mechanical and electrical properties before selecting a material.
For projects requiring other copper strip grades and dimensions beyond lead frame materials, see Copper Strip for the broader product range.
Available Lead Frame Copper Alloy Grades
The current product range includes the following grades:
• C192/KFC: Copper-iron-phosphorus alloy for lead frame applications.
• C194: Copper-iron-phosphorus alloy with published mechanical, electrical and thermal property data.
• C7025: Copper alloy with nickel, silicon and magnesium listed in the current chemical composition table.
The appropriate grade depends on the requirements of the lead frame design and downstream manufacturing process. Confirm the required alloy designation and temper when requesting a quotation.
Chemical Composition
The following values are transcribed from the current page's chemical composition table.
| Alloy family | Alloy designation | Fe (%) | P (%) | Ni (%) | Si (%) | Mg (%) | Cu |
|---|---|---|---|---|---|---|---|
| Copper-iron-phosphorus alloy | QFe0.1 / C192 / KFC | 0.05–0.15 | 0.015–0.04 | - | - | - | Rem. |
| Copper-iron-phosphorus alloy | QFe2.5 / C194 | 2.1–2.6 | 0.015–0.15 | - | - | - | Rem. |
| Copper alloy | C7025 | - | - | 2.2–4.2 | 0.25–1.2 | 0.05–0.3 | Rem. |
Rem. means the balance of the composition. Dashes indicate that the current table does not list a value in that field; they should not be interpreted as independently verified zero-content limits.
Mechanical and Electrical Properties
The published technical data gives the following properties by alloy and temper. Values are reproduced from the current page.
| Alloy designation | Temper | Tensile strength (MPa) | Elongation (%) | Hardness (HV) | Electrical conductivity (% IACS) | Thermal conductivity (W/(m·K)) |
|---|---|---|---|---|---|---|
| C192/KFC/C19210 | O | 260–340 | ≥30 | <100 | 85 | 365 |
| C192/KFC/C19210 | 1/2H | 290–440 | ≥15 | 100–140 | - | - |
| C192/KFC/C19210 | H | 340–540 | ≥4 | 110–170 | - | - |
| C194/C19410 | 1/2H | 360–430 | ≥5 | 110–140 | 60 | 260 |
| C194/C19410 | H | 420–490 | ≥2 | 120–150 | - | - |
| C194/C19410 | EH | 460–590 | - | 140–170 | - | - |
| C194/C19410 | SH | ≥550 | - | ≥160 | - | - |
| C7025 | TM02 | 640–750 | ≥10 | 180–240 | 45 | 180 |
| C7025 | TM03 | 680–780 | ≥5 | 200–250 | - | - |
| C7025 | TM04 | 770–840 | ≥1 | 230–275 | - | - |
Note: The page states that the listed figures are based on material thicknesses from 0.1 to 3.0 mm. Confirm the applicable property values and temper with CIVEN Metal before using them as contractual acceptance criteria.
Material Selection for Lead Frame Applications
Integrated Circuits
Lead frame material is used in integrated circuit packaging. The required grade and temper should be selected according to the component design and manufacturing specifications.
Electrical Connectors
For electrical connectors, buyers can compare the published conductivity, tensile strength, elongation and hardness data to identify a material that meets the component's requirements.
Transistors and LED Supports
The current page also lists transistors and LED supports among the typical applications. The final material choice should be confirmed against the required geometry, forming process and performance criteria.
Request a Lead Frame Copper Strip Specification
When contacting CIVEN Metal, provide the required alloy grade, temper, thickness, width, quantity and intended application. If the project has specified limits for tensile strength, elongation, hardness, electrical conductivity or thermal conductivity, include those requirements in the inquiry so the material data can be checked against your specification.
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