C70310 Copper Alloy Sheet

C70310-STOL94 Copper-Nickel-Silicon Alloy is a high-performance material composed primarily of copper (Cu), nickel (Ni), and a small amount of silicon (Si), typically ranging between 1-4%. This alloy is renowned for its exceptional toughness, high elastic modulus, and corrosion resistance, making it highly suitable for demanding environments such as high temperatures, high humidity, and seawater exposure.

 

Features C70310 Copper Alloy Sheet is a high-performance copper-nickel-silicon alloy known for its excellent strength, conductivity, and corrosion resistance. This alloy is widely used in industries that require durable and reliable materials for demanding applications.

 

 

Copper (Cu): Rem

Nickel (Ni): 1.8-3.0

Chromium (Cr): 0.10-0.8

Silicon (Si): 0.40-0.8

Iron (Fe): 0.15

impurities: 0.65

 

 

Properties depend heavily on the processing and heat treatment condition (solution treatment + aging).

Density: ~8.8 g/cm³

Electrical Conductivity: 10 - 20% IACS (Aged condition)

Thermal Conductivity: ~ 40 W/(m·K)

Tensile Strength

Solution-treated condition: 500 - 650 MPa

Peak-aged condition: 1000 - 1400 MPa

Yield Strength (0.2%): 900 - 1300 MPa

Elongation: 1 - 10% (Lower at highest strength levels)

Rockwell Hardness: HRC 30 - 40

Elastic Modulus: ~ 130 GPa

 

 

• High Strength: C70310 offers excellent mechanical strength, making it suitable for high-stress applications.
• Good Electrical Conductivity: Maintains decent electrical conductivity, which is essential for electronic and electrical components.
• Corrosion Resistance: Resists corrosion in various environments, including marine and industrial settings.
• Wear Resistance: The addition of silicon enhances its wear resistance, extending the lifespan of components.
• Thermal Conductivity: Provides good thermal conductivity, useful in heat exchange applications.
• Machinability: Can be easily machined into complex shapes and components.

 

 

The properties of C70310 are highly dependent on precise thermo-mechanical processing.

 

• Hot Working: Can be hot rolled or forged in the range of 850°C - 950°C.
• Cold Working: After solution treatment, it can be cold rolled, drawn, etc., for some work hardening.

 

Core Heat Treatment Sequence

• Solution Treatment: Heated to approximately 800°C - 850°C to dissolve alloying elements fully into the copper matrix, followed by rapid quenching (water quench) to obtain a supersaturated solid solution.
• Aging Treatment: Aged at 350°C - 450°C for an extended period (several to over ten hours). During this stage, spinodal decomposition occurs, forming a nanoscale modulated structure of Ni/Sn-rich and lean regions, creating intense coherency strain hardening-the fundamental reason for its ultra-high strength.
• Important Note: Aging temperature and time must be precisely controlled; over-aging leads to property degradation.

 

Machinability: Machinability is fair in the solution-treated condition but becomes very poor in the peak-aged (high-strength) condition. Carbide tools and low-speed, high-feed rates are required.

 

Weldability: Weldability is fair. Low heat-input methods like electron beam or laser welding are typically used, followed by re-solution and aging treatments to restore properties.

 

 

• Durability: Combines high strength with excellent wear and corrosion resistance.
• Versatility: Suitable for a wide range of applications across multiple industries.
• Reliability: Consistently performs in demanding environments.
• Cost-Effective: Offers a balance of performance and affordability compared to other high-performance alloys.

 

 

C70310 Copper Alloy Sheets are available in various sizes and thicknesses to meet specific application requirements. Custom sizes and finishes can also be provided based on customer needs. Comparisons with other copper Alloy features and applications as below

 

 

 

 

C70310 Copper Alloy Sheets are used in a variety of industries due to their versatile properties:

• Electronics: Connectors, terminals, and lead frames for integrated circuits.
• Automotive: Electrical components, sensors, and connectors.
• Industrial: Springs, bearings, and wear-resistant parts.
• Telecommunications: High-frequency connectors and shielding components.
• Marine: Corrosion-resistant parts for marine environments.

 

 

Q:What information should i confirm you when i send inquiry

A:Sometimes we need product specification like material standard or Grade, size, Qty, shipping port, Terms like FOB or CIF etc.

 

Q: How long of the delivery time?

A: Usually, the shipment can be delivery within 15-30days after the order confirmed.

 

Q: How about the payment items?

A: LC, T/T, PayPal, Western Union etc.

 

Q: Which country have you exported to?

A: Our main market is South America, Middle East, Africa and Europe. And have built long time relationship with Pakistan, US, Norway, Germany, Korea, Russia,Taiwan customers.And got continue orders from them every month.

 

Q: Can i visit your factory?

A: Sure! Welcome in any time.

 

Q: How about the MOQ?

A: Normally we dont have MOQ requirement, We always expect more opportunities with you. But for some special material or special size let's communicate the actual status.

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