ASTM B888 C70250 CuNi3si Ultra High Pressure Copper Alloy Piping

Product Details
Customization: Available
Application: Relays/Switches
certification: ASTM B888
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Number of Employees
355
Year of Establishment
2002-03-07
  • ASTM B888 C70250 CuNi3si Ultra High Pressure Copper Alloy Piping
  • ASTM B888 C70250 CuNi3si Ultra High Pressure Copper Alloy Piping
  • ASTM B888 C70250 CuNi3si Ultra High Pressure Copper Alloy Piping
  • ASTM B888 C70250 CuNi3si Ultra High Pressure Copper Alloy Piping
  • ASTM B888 C70250 CuNi3si Ultra High Pressure Copper Alloy Piping
  • ASTM B888 C70250 CuNi3si Ultra High Pressure Copper Alloy Piping
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Basic Info.

Model NO.
C70250
Temperature Classification
High Temperature Piping
MPa Classfication
Ultra High Pressure Piping
Material
Copper Alloy
Standard
ASTM, GB, API, DIN, JIS, BS
Medium
Liquid
Cross-Section Shape
Round
Connection Type
Seamless
Diameter
419mm
Transport Package
Wooden Case
Specification
1.2m*1.2m*L
Trademark
Hehong
Origin
China
Production Capacity
600ton/Month

Packaging & Delivery

Package Size
80.00cm * 80.00cm * 80.00cm
Package Gross Weight
1.000kg

Product Description

Product Details for CuNi3Si1Mg (C70250)

1. Core Specifications
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

High Strength: Experience unparalleled mechanical strength with tensile strength ranging between 620-900 MPa and yield strength from 450-750 MPa, subject to temper variations.
High Conductivity: Enjoy superior electrical performance with conductivity levels of 25-34 MS/m, translating to 45-60% IACS, outshining standard bronze and brass.
Stress Relaxation Resistance: Remarkable stress retention, maintaining over 70% residual stress even at elevated temperatures of 200°C.
Formability: Benefit from excellent cold workability, with a minimum bending radius of just two times the material thickness.
Eco-Certified: Committed to sustainability, this product is lead-free and fully compliant with RoHS & ELV standards.

3. Typical Applications
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
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
  • Cold Working: Ideal for stamping and bending applications, with a minimum bend radius set at twice the thickness.
  • Welding: Highly adaptable to various welding techniques, with TIG/MIG methods providing excellent results and soft soldering offering good compatibility.
  • Heat Treatment:
    • Soft Annealing: Conduct at temperatures ranging from 600-700°C for a duration of 1-3 hours.
    • Hot Working: Optimal within the 800-950°C temperature range.
6. Available Forms & Dimensions
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
  • Certifications: Fully certified under ASTM B888, RoHS, and ELV; Mill Certificates are available for your assurance.
  • Testing Reports: Comprehensive testing reports covering mechanical properties, conductivity, and metallurgical analysis.
  • Customization: Tailor your order with non-standard sizes and specialized surface treatments such as tin or silver plating.


Company Reference
ASTM B888 C70250 CuNi3si Ultra High Pressure Copper Alloy Piping
ASTM B888 C70250 CuNi3si Ultra High Pressure Copper Alloy Piping


 
ASTM B888 C70250 CuNi3si Ultra High Pressure Copper Alloy Piping
Jiangyin Hehong Precision Technology (HHP COPPER /Jiangyin New Huahong Copper Industry Co., Ltd. ) is a distinguished branch of the Huahong Group (A-STOCK: 002645.SZ), a renowned manufacturer of Copper Alloy products in eastern China, conveniently located near Shanghai.


We are experts in the production of copper and copper alloy products such asadmiralty brass/naval brass, aluminum brass, cupronickel/copper nickel) condenser tubes, efficient heat exchange tubes, large diameter copper nickel pipes, copper alloy forged flanges, oxygen-free copper products, and railway ground cables. Our annual production capacity exceeds 30,000 tons of copper products, catering to diverse industries including seawater desalination, nuclear power, petrochemical, marine, steam turbine, pressure vessels, heat exchangers, central air-conditioning, household appliances, and railway transit.
Additionally, we proudly authored the National Standard for copper alloy seamless tubes/pipes used in Nuclear Power.

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