Discover the Exceptional Product Details for CuNi3Si1Mg (C70250) and experience unparalleled precision and performance.
1. Core Specifications: The foundation of excellence in every application.
| Item |
Details |
| Grade |
CuNi3Si1Mg (UNS C70250) |
| Standard |
ASTM B888, RoHS & ELV Compliant |
| Composition |
Cu (Balance), Ni 3%, Si 0.65%, Mg 0.15%, Pb <0.05% |
| Material Type |
Precipitation-Hardened High Copper Alloy |
2. Key Advantages: Elevate your expectations with these outstanding features.
High Strength: Built to endure and perform under extreme conditions.: Exhibiting remarkable tensile strength ranging from 620-900 MPa and yield strength between 450-750 MPa, customized by temper.
High Conductivity: Empowering your systems with superior electrical performance.: Boasting an impressive electrical conductivity of 25-34 MS/m, equating to 45-60% IACS, and outshining the capabilities of standard bronze or brass.
Stress Relaxation Resistance: Reliability that withstands high-temperature challenges.: Exceptional retention of over 70% residual stress at elevated temperatures of 200°C.
Formability: Versatile and adaptable to suit diverse manufacturing needs.: Displays excellent cold workability with a minimum bending radius of 2× thickness, allowing for versatile applications.
Eco-Certified: Commitment to sustainability and environmental compliance.: Lead-free and fully compliant with RoHS & ELV standards, ensuring eco-friendly operations.
3. Typical Applications: Explore the diverse range of uses tailored for your industry.
| Industry |
Applications |
| Electronics |
High-density connectors, CPU sockets, relay springs, micro-switch contacts |
| Automotive |
Fuel injection components, sensor terminals, battery connectors |
| Industrial Equipment |
High-temperature springs, solenoid coils, precision instrument contacts |
| Renewable Energy |
PV junction boxes, EV charging port components |
4. Physical & Mechanical Properties: Engineered for durability and efficiency.
| Parameter |
Typical Value |
Test Standard |
| Density |
8.82 g/cm³ |
ISO 1183 |
| Thermal Conductivity |
190 W/(m·K) |
ASTM E1461 |
| Thermal Expansion (0-300°C) |
17.6×10-6/K |
ASTM E228 |
| Elastic Modulus |
131 GPa |
ASTM E111 |
| Hardness (HV) |
180-270 (depends on temper) |
ASTM E384 |
5. Processing & Heat Treatment: Tailored for optimal performance with precision engineering.
- Cold Working: Ideal for shaping and forming to meet your unique specifications.: Perfect for stamping and bending applications, maintaining a minimum bend radius of 2× thickness.
- Welding: Seamless integration with your systems for robust connections.: Recommended techniques include TIG/MIG welding for excellent results and soft soldering for good performance.
- Heat Treatment: Fine-tuned to enhance material properties and performance.:
- Soft Annealing: Optimal softness achieved at 600-700°C for 1-3 hours.
- Hot Working: Enhanced formability executed between 800-950°C.
6. Available Forms & Dimensions: Customizable to fit your specific requirements.
| Form |
Size Range |
Custom Options |
| Strip |
Thickness: 0.1mm-5.0mm, Width: ≥3mm |
Hot-dip tinned, contour-milled, coatings |
| Sheet |
Thickness: 0.5mm-10mm |
Mechanical/electrolytic polishing |
| Wire |
Diameter: 0.5mm-20mm |
Precision cold-drawn/polished |
| Tube |
OD: 3mm-50mm, Wall: 0.2mm-5mm |
Seamless/welded customization |
7. Certifications & Support: Assurance of quality and reliability.
- Certifications: Compliance and excellence guaranteed.: Accredited with ASTM B888, RoHS, and ELV certifications, with Mill Certificates readily available for your peace of mind.
- Testing Reports: Comprehensive insights into material performance.: Detailed analyses of mechanical properties, conductivity, and metallurgical composition.
- Customization: Tailored solutions to meet your unique requirements.: Available in non-standard sizes and surface treatments, including tin and silver plating, to suit your exact specifications.
Company Reference: A legacy of innovation and quality.
Jiangyin: A hub of industrial excellence. Hehong Precision: Precision that defines our identity. Technology (HHP COPPER/Jiangyin New Huahong Copper Industry Co., Ltd.) stands proudly as a branch of Huahong Group (A-STOCK: 002645.SZ), a renowned manufacturer of copper alloy products located in eastern China, strategically situated near Shanghai.
We are the artisans of copper and copper alloy, specializing in:Admiralty brass/naval brass, aluminum brass, cupronickel/copper nickel,offering condenser tubes, high-efficiency heat exchange tubes, large diameter copper nickel pipes, copper alloy forged flanges, oxygen-free copper products, and railway ground cables. With an impressive annual production capacity exceeding 30,000 tons, our products find applications across various domains including seawater desalination, nuclear power, petrochemical, marine, steam turbines, pressure vessels, heat exchangers, central air-conditioning, household appliances, and railway transit, among others.
And we proudly contributed to the National Standard of copper alloy seamless tube/pipe designated for Nuclear Power!
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