CuNi 70/30 Bar - High-Strength Copper Nickel Rods for Heat Exchangers
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CuNi 70/30 Bar - High-Strength Copper Nickel Rods for Heat Exchangers

CuNi 70/30 Bar, a premium copper nickel rod known for its exceptional corrosion resistance and high strength, is widely used in demanding environments. Our CuNi 70/30 Bar meets rigorous industry standards, delivering reliable performance in heat exchangers and marine systems.
  • CuNi1,CuNi2,CuNi6,CuNi8,CuNi10,CuNi14,CuNi19, CuNi23,CuNi30,CuNi34,CuNi40,CuNi44

  • DLX

  • bright

  • 8.9g/cm3

  • 420

  • ISO9001, ROHS

  • 5kg

  • Aviation, Electronics, Industrial, Medical, Chemical

  • Copper Nickel

Availability:

Introduction

Description of CuNi 70/30 Bar

CuNi bar

What is CuNi 70/30 Bar?

copper bar

CuNi 70/30 Bar, also referred to as Copper Nickel 70/30 Rod, is a high-performance copper nickel alloy composed of approximately 70% copper and 30% nickel. This copper nickel rod exhibits outstanding resistance to seawater corrosion, making it a preferred choice for marine and industrial applications.

CuNi 70/30 Bar is engineered for durability, with customizable specifications to suit specific project needs. As a leading CuNi 70/30 Bar supplier, DLX ensures each copper nickel rod undergoes precise manufacturing processes for optimal thermal conductivity and mechanical strength. Ideal for heat exchangers, CuNi 70/30 Bar provides long-lasting reliability in corrosive settings.


CuNi bar

Feature of CuNi 70/30 Bar

1.Superior Corrosion Resistance

CuNi 70/30 Bar offers excellent protection against biofouling and erosion in seawater, extending service life in marine environments.

2.High Thermal Conductivity

This copper nickel rod efficiently transfers heat, making CuNi 70/30 Bar essential for heat exchanger components.

3.Enhanced Strength and Ductility

CuNi 70/30 Bar maintains structural integrity under high pressure, with the copper nickel alloy providing ductility for easy fabrication.

4.Low Magnetic Permeability

The copper nickel rod's non-magnetic properties make CuNi 70/30 Bar suitable for sensitive electronic and naval applications.

5.Customizable Finishes

Available in polished or mill finish, CuNi 70/30 Bar can be tailored to meet exact requirements as a versatile copper nickel rod.

CuNi bar

Specification

Specification of CuNi 70/30 Bar

Copper Nickel Alloy RodCopper Nickel Alloy Rod

Size Range
Wire 0.08-7.5mm
Ribbon (0.05-0.35)*(0.5-6.0)mm
Strip (0.50-2.5)*(5-180)mm
Rod 8-50mm


Properties 

Material

Resistivity

200c μΩ.m

Max working temperature

(℃)

Tensile strength 

(Mpa)

Melting point (℃) Density (g/cm³) TCR X 10^(-6)/℃ (20-600℃) EMF vs Cu (μV/℃)(0-100℃)
NC003 (CuNi1) 0.03 200 210 1085 8.9 <100 -8
NC005 (CuNi2) 0.05 200 220 1090 8.9 <120 -12
NC010 (CuNi6) 0.1 220 250 1095 8.9 <60 -18
NC012 (CuNi8) 0.12 250 270 1097 8.9 <57 -22
NC015 (CuNi10) 0.15 250 290 1100 8.9 <50 -25
NC020 (CuNi14) 0.2 300 310 1115 8.9 <30 -28
NC025 (CuNi19) 0.25 300 340 1135 8.9 <25 -32
NC030 (CuNi23) 0.3 300 350 1150 8.9 <16 -34
NC035 (CuNi30) 0.35 350 400 1170 8.9 <10 -37
NC040 (CuNi34) 0.4 350 400 1180 8.9 0 -39
NC050 (CuNi44) 0.5 400 420 1200 8.9 <-6 -43

CuNi bar


Application Field

Application Field of CuNi 70/30 Bar

With its unmatched corrosion resistance, high strength, and thermal efficiency, CuNi 70/30 Bar is indispensable in various sectors as a reliable copper nickel rod:

(1)Heat Exchangers

CuNi 70/30 Bar is utilized in tubesheets and condenser components for superior heat transfer and resistance to pitting corrosion.

(2)Marine Engineering

Employed in shipbuilding for propeller shafts and hull fittings, where the copper nickel rod withstands harsh saltwater exposure.

(3)Desalination Plants

CuNi 70/30 Bar supports brine handling systems, leveraging its copper nickel alloy durability for long-term operation.

(4)Chemical Processing

Ideal for piping and valves, the copper nickel rod ensures integrity in acidic and alkaline environments.

(5)Electronics and Precision Resistors

Ideal for manufacturing high-precision resistors and potentiometers used in electronics and industrial automation.

CuNi bar


Our Advantage

Advantage of CuNi 70/30 Bar

DLX

About DLX ALLOY

CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got ISO9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel-based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, precision alloy, FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and etc, in the form of wire, strip, ribbon, bar, tube, plate.

DLXDLX

Advantage of DLX ALLOY

1.Market Leader - Top 5 in China's nonferrous metal industry

2.Flexible products - Thousands of product specifications,Meet multiple needs of buyers

3.Low MOQ - Can customize samples

4.Short production lead time,fast delivery of whole cabinet

5.Professional inspection equipment - Before delivery, we will use spectrometers, tensile testers and other professional equipment to conduct a comprehensive inspection of the products to ensure that the goods are qualified for acceptance

6.Professional business team - Quickly responds to customer inquiries,24-hour professional quotation online The salesperson will follow the customer's requirements for the use of the product,Professionally recommend more appropriate performance and price products to customers

7.Intact packaging - Packaging according to customer needs.You can customize wooden boxes to ensure that the goods arrive at the destination in good condition

8.Various payment methods - Facilitate customer payment

9.Get good reviews from customers - Old customers have long-term cooperation,The longest is more than 7 years

10.Received various awards - Google is very recognized by us,They give us awards every year

DLX

CuNi bar

incoloy

FAQ

FAQs of CuNi 70/30 Bar

1.Why Choose Our CuNi 70/30 Bar?

  • Factory Direct Supply with Competitive Wholesale Prices

  • Custom Sizes & Large Stock Availability

  • Fast Global Shipping & Reliable Industrial Supply

  • Guaranteed High Purity for Electronic & Industrial Applications

2.How long is the delivery time?

It depends on the quantity of the order, 10-30 days for small orders. For large orders, it takes 60 days.

3.Do you accept OEM/ODM production?

Yes! We accept OEM/ODM production. You can send us your samples or drawings.

4.What is your payment terms? 

T/T, L/C, D/A, D/P, Western Union, MoneyGram, Paypal

5.Can I visit your factory before placing an order?

Yes, you are welcome to visit our factory. We are glad to have the opportunity to get to know each other.

6.Where is your production base?

We manufacture our products in Jiangsu, China and ship them from China to your country as soon as possible, which usually depends on your product requirements and quantity.

7.Can you send samples?

Yes, we can.

CuNi bar

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We implement comprehensive quality control at every stage, including raw materials, production processes, and finished products.
Email dlx-group@dlx-alloy.com
Phone 0086-1990 6119 641
Address NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu,China
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