Customizable CuNi44 Copper-Nickel Rod High Thermal Stability

• Customization: Available
• Color: Bright
• Strength Grade: Hv 120-180
• Model NO.: CuNi44
• Material: Copper-Nickel Alloy
• Shape: Round Bar
• Surface Treatment: Bright
• Grade: CuNi44
• Diameter: 5 mm
• Resistivity: 0.45 μω·M
• Temperature Coefficient of Resistance: ±20 Ppm/℃
• Sample: Free
• Density (25℃): 0.05-10mm
• Elongation: ≥30%
• Transport Package: Wooden Case
• Specification: Cu56Ni44
• Trademark: Huona
• Origin: China
• HS Code: 7312100000
• Production Capacity: 2000ton/Year
• Package Size: 50.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 20.000kg

Product Description

Customizable CuNi44 Copper-Nickel Rod

High-performance binary alloy rod with exceptional thermal stability, corrosion resistance, and mechanical workability for demanding industrial applications.

Product Overview

CuNi44 copper-nickel rod from Huona New Material is a premium binary alloy composed of 44% nickel and 56% copper with trace stabilizing elements. Manufactured through advanced processes including vacuum smelting, hot forging, precision turning, and solution annealing, this rod delivers superior corrosion resistance, stable electrical properties, and excellent mechanical workability. Available in customizable diameters (5-200mm) and lengths (1000-6000mm), it serves critical roles in marine engineering, chemical equipment, and precision instrumentation.

Material Specifications & Standards

• Alloy Grade: CuNi44 (equivalent to UNS C71500, DIN 2.0882, GB/T 2040-2017)
• Chemical Composition: Ni 43.0-45.0%, Cu balance, Fe ≤0.5%, Mn ≤0.5%, C ≤0.1%
• Compliant Standards: ASTM B122, EN 12449, GB/T 2040-2017, RoHS 2.0
• Manufacturer: Huona New Material (ISO 9001 & ISO 14001 certified)

Core Performance Advantages

Exceptional Corrosion & Biofouling Resistance

• Marine Environment Adaptability: Forms dense oxide film resisting pitting, crevice corrosion, and stress corrosion cracking
• Anti-Biofouling Performance: Inhibits marine organism adhesion, reducing maintenance frequency by 50% compared to carbon steel
• Passes 1000-hour ASTM B117 salt spray testing with no significant corrosion

Stable Electrical & Thermal Properties

• Consistent Resistivity: 0.45 μΩ·m at 20ºC with low temperature coefficient (±20 ppm/ºC)
• High Thermal Conductivity: 29 W/m·K at 20ºC for efficient heat transfer

Superior Mechanical Workability

• Forging & Machining Performance: Tensile strength ≥380 MPa, elongation ≥30% in annealed state
• Weldability: TIG/MIG compatible with welded joint strength retention ≥90% of base metal
• Precision machining capability with minimum turning tolerance ±0.01mm

Technical Specifications

Attribute	Value (Typical)
Alloy Grade	CuNi44 (annealed temper, M)
Diameter Range	5-200mm (tolerance: ±0.05mm for ≤50mm; ±0.1mm for >50mm)
Length Range	1000-6000mm (customizable)
Density (25ºC)	8.94 g/cm³
Resistivity (20ºC)	0.45 μΩ·m
Temperature Coefficient of Resistance (0-100ºC)	±20 ppm/ºC
Tensile Strength	≥380 MPa (annealed)
Yield Strength	≥140 MPa (annealed)
Elongation	≥30%
Hardness (HB)	80-100 (annealed)
Operating Temperature Range	-200ºC to 300ºC
Surface Finish	Turned (Ra ≤1.6μm); optional polished (Ra ≤0.2μm)

Product Specifications

Item	Specification
Supply Form	Straight rods (1-6m length); custom cut-to-length (≥100mm)
Surface Treatment	Turned, polished, or pickled (removes oxide scale for welding)
Machinability	Supports CNC turning, milling, drilling, and thread cutting
Packaging	Anti-rust oil coating + plastic film wrapping + wooden crate
Customization	Special diameters (2-250mm); heat treatment (quenched/tempered) for enhanced strength

Application Scenarios

• Marine Engineering: Seawater intake pipes, ship propeller shafts, offshore platform components
• Chemical Equipment: Heat exchanger tubes, reactor internals, pipeline valves
• Precision Instrumentation: Resistance element blanks, current shunts, temperature sensor housings
• Automotive & Aerospace: Brake system components, fuel system pipelines