NF A51-121 CuNi3si C70250 High Temp Piping ASTM B888 Classifications

Product Details
Customization: Available
Application: Relays/Switches
certification: ASTM B888
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Number of Employees
355
Year of Establishment
2002-03-07
  • NF A51-121 CuNi3si C70250 High Temp Piping ASTM B888 Classifications
  • NF A51-121 CuNi3si C70250 High Temp Piping ASTM B888 Classifications
  • NF A51-121 CuNi3si C70250 High Temp Piping ASTM B888 Classifications
  • NF A51-121 CuNi3si C70250 High Temp Piping ASTM B888 Classifications
  • NF A51-121 CuNi3si C70250 High Temp Piping ASTM B888 Classifications
  • NF A51-121 CuNi3si C70250 High Temp Piping ASTM B888 Classifications
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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 unmatched durability with tensile strength ranging from 620 to 900 MPa and yield strength between 450 to 750 MPa, varying by temper.
High Conductivity: Enjoy superior electrical performance with conductivity of 25-34 MS/m, which translates to a remarkable 45-60% IACS, outperforming standard bronze and brass.
Stress Relaxation Resistance: Achieve exceptional performance with over 70% residual stress retention at elevated temperatures up to 200°C.
Formability: Benefit from outstanding cold workability, supporting a minimum bending radius as small as 2× the material's thickness.
Eco-Certified: Our lead-free products are fully compliant with RoHS and ELV directives, ensuring eco-friendly and sustainable solutions.

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: Perfect for stamping and bending applications, with a minimum bend radius of just 2× thickness, ensuring flexibility and precision.
  • Welding: Recommended welding methods include TIG and MIG for excellent results, while soft soldering also yields good outcomes.
  • Heat Treatment:
    • Soft Annealing: Treat the material at temperatures between 600-700°C for 1 to 3 hours to achieve desired malleability.
    • Hot Working: Perform hot working processes at temperatures ranging from 800-950°C for optimal shaping and forming.
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: Our products meet ASTM B888 standards and are RoHS and ELV certified, with Mill Certificates available for full traceability.
  • Testing Reports: Comprehensive testing reports cover mechanical properties, conductivity, and metallurgical analysis, ensuring quality and consistency.
  • Customization: We offer customization for non-standard sizes and specialized surface treatments, including tin and silver plating, to meet specific requirements.


Company Reference
NF A51-121 CuNi3si C70250 High Temp Piping ASTM B888 Classifications
NF A51-121 CuNi3si C70250 High Temp Piping ASTM B888 Classifications


 
NF A51-121 CuNi3si C70250 High Temp Piping ASTM B888 Classifications
Jiangyin Hehong Precision Technology (HHP COPPER /Jiangyin New Huahong Copper Industry Co., Ltd. ) is a proud division of the prestigious Huahong Group (A-STOCK : 002645.SZ), renowned as a leading manufacturer of Copper Alloy products in eastern China, strategically located near Shanghai.


We are specializing at the production of copper and copper alloy (admiralty brass/naval brass, aluminum brass, cupronickel/copper nickel) condenser tube, efficient heat exchange tube, large diameter copper nickel pipe, copper alloy forged flanges, oxygen-free copper products and railway ground cable. With an impressive annual production capacity exceeding 30,000 tons of copper products, our offerings are integral to a wide array of industries, including seawater desalination, nuclear power, petrochemical, marine, steam turbine, pressure vessels, heat exchangers, central air-conditioning, household appliances, and railway transit.
Moreover, we have proudly authored the National Standard for copper alloy seamless tube/pipe, specifically tailored for Nuclear Power, setting benchmarks for the industry.

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