C197 Lead Frame Copper Wire

Copper alloys for lead frames can be roughly divided into copper iron series, copper nickel silicon series, copper chromium series, copper nickel tin series (JK-2 alloy), etc. Ternary, quaternary and other multicomponent copper alloys can achieve better performance and lower cost than traditional binary alloys. Copper iron series alloys have many brand numbers, good mechanical strength, stress relaxation resistance and low creep resistance, making them a good type of lead frame material. Among them, C19400 and C19700, which are widely used in copper iron alloys, are mainly strip materials in China. Our company applies unique processing technology to produce wire products of iron copper C19400 and C19700, which are more convenient for downstream customers to process and use, and can replace imports.

 

C19700 copper alloy combines high strength and high conductivity, with a tensile strength of over 600MPa and a conductivity maintained at around 80% IACS (International Annealed Copper Standard), far exceeding ordinary copper. After aging treatment, its hardness (HV) can reach 200-250, and its wear resistance is significantly better than that of pure copper. At the same time, it has excellent corrosion resistance and stress relaxation resistance. The material can maintain dimensional stability in high temperature environments, with a low coefficient of thermal expansion, making it suitable for precision machining needs.

 

 

The main components of C19700 include:
Copper (Cu): ≥ 99.1%, providing excellent conductivity and thermal conductivity as a substrate;
Iron (Fe): 0.6% -1.2%, enhances the strength and wear resistance of the alloy;
Phosphorus (P): 0.01% -0.04%, improves processing performance and enhances fatigue resistance;
Other trace elements: Strictly control impurity content to ensure material stability.

 

• Conductivity: Conductivity ≥ 85% IACS, close to the level of pure copper, suitable for electrical applications;
• Strength: Tensile strength ≥ 350 MPa, moderate hardness, and good ductility;
• Heat resistance: It can maintain stable performance even at high temperatures, with a softening temperature of over 400 ℃;
• Corrosion resistance: It has good corrosion resistance to the atmosphere, water, and some chemical media.

 

The advanced process chain of vacuum melting, hot rolling forming, cold rolling finishing, and annealing treatment is adopted to ensure that the material has both high strength and good formability through precise control of solid solution strengthening and grain refinement. Special surface treatment technology can customize plate and strip materials with different roughness (Ra 0.2-1.6 μ m)

This alloy can withstand cold and hot pressure processing well and has excellent processing performance. This makes C19700 (H06) iron bronze alloy easy to form and process during the manufacturing process, and can meet the needs of various complex shapes and structures.

In summary, C19700 (H06) iron bronze alloy has broad application prospects in various fields such as electrical, electronic, mechanical, etc. due to its excellent welding performance, excellent corrosion resistance, high strength and elasticity, and good processing performance.

 

 

C197 vs. C194: C194 is one of the most widely used lead frame materials. C197 can be seen as an improved or higher-performance version of C194, aiming for greater strength and better processing consistency while maintaining conductivity.

C197 vs. C1975: These are alloys with similar performance characteristics within the same family. Search results indicate that C1975 is also described as a high-conductivity copper alloy used for lead frames and terminals. In practice, they may serve as alternatives to each other or have subtle performance differences, depending on the manufacturer's specifications.

 

Copper rod specifications (Φ 3~Φ 150x2500)
Copper plate specifications (T0.5mm~T20mm)
Copper strip specifications (T0.1mm~T2.0mm)
Copper tube/copper wire/copper sleeve/copper busbar/hexagonal copper rod

 

 

C19700 copper strip is suitable for various specific occasions due to its unique properties. The following is a detailed analysis of the applicable scenarios for C19700 copper strip:
1, Welding and connection occasions
C19700 copper strip can weld well with bronze, steel, and other alloys, especially its brazing properties. Therefore, in applications that require welding connections, such as electronic devices, piping systems, automotive components, etc., C19700 copper strip is an ideal choice.
2, Corrosion resistant occasions
C19700 copper strip has high corrosion resistance in the atmosphere, fresh water, and seawater, and also exhibits good stability against the effects of caustic soda and chlorides. This makes C19700 copper strip significantly advantageous in applications such as marine engineering, chemical equipment, water treatment facilities, etc. that require exposure to corrosive environments.
3, Suitable for processing under cold and hot pressure
C19700 copper strip can withstand cold and hot pressure processing well and cannot be strengthened through heat treatment. Therefore, it is usually used in annealed and work hardened states, where it has high yield strength and elasticity. This characteristic makes C19700 copper strip perform well in the manufacturing of components that require mechanical stress, such as springs, fasteners, connectors, etc.
4, Electrical and Thermal Applications
Although the conductivity of C19700 copper strip may be slightly lower than some high conductivity copper alloys, its excellent electrical performance and thermal conductivity still make it widely used in the fields of electrical and electronics. For example, C19700 copper strip can play an important role in high-speed transmission lines, power equipment, and electronic devices that require heat dissipation.

 

 

 

Q1: What are the main components of C197 Lead Frame Copper Wire?
A:Based on the search results, the main components of C197 Lead Frame Copper Wire (UNS C19700) are copper (Cu) as the balance, with specific additions of iron (Fe) and phosphorus (P).

 

Q2: Does the electrical conductivity of C197 Lead Frame Copper Wire decrease due to processing?
A: Yes, the electrical conductivity of C197 lead frame copper wire can decrease due to processing, primarily through work hardening and the introduction of lattice defects.While the base conductivity of C197 is excellent at approximately 80% IACS (International Annealed Copper Standard) , mechanical processes like cold working (drawing, rolling, bending) alter its microstructure.

 

Q3: What surface treatments is C197 Lead Frame Copper Wire suitable for?
A: C197 lead frame copper wire is suitable for several key surface treatments that are standard in semiconductor packaging. These treatments are primarily designed to achieve two critical goals: enhancing the adhesion of the plastic molding compound that protects the chip, and creating a reliable surface for wire bonding to connect the chip electrically

 

Q4: How to distinguish copper C197 Lead Frame Copper Wire from Aluminum Bronze?
A: You can distinguish C197 from aluminum bronze through several straightforward methods, as they are fundamentally different materials designed for opposite purposes

 

Q5: What is the corrosion resistance of C197 Lead Frame Copper Wire?
A: C197 lead frame copper wire exhibits good to excellent corrosion resistance, making it highly suitable for demanding electronic applications and various environmental conditions.

 

Q6: What parameters are required when ordering C197 Lead Frame Copper Wire ?
A:When ordering C197 Lead Frame Copper Wire, you need to specify several key parameters to ensure the material meets your manufacturing requirements.As well the tolerence of the dimenstion, Qty, leadtime etc.

 

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