ASME SB111 UNS C71500 Copper Nickel Tube CuNi 70/30 Seamless Condenser Tube - Knowledge

Seamless tubes made from copper-nickel alloy UNS C71500 (CuNi90/10), composed of approximately 90% Copper (Cu) and 10% Nickel (Ni), often with small additions of Iron (Fe) and Manganese (Mn) for enhanced properties. as below:

1>. Exceptional Corrosion Resistance: Highly resistant to seawater, brackish water, brine, steam condensate, and various chemicals (acids, alkalis). Resists stress corrosion cracking, erosion-corrosion, and impingement attack.

2>. Biofouling Resistance: Naturally inhibits marine organism growth (barnacles, mussels, algae) better than many other alloys.

3>. Good Fabricability & Weldability: Can be formed, bent, brazed, soldered, and welded (using matching filler metals) relatively easily.

4>. Moderate Strength & Toughness: Higher strength and better ductility than pure copper or brass. Good fatigue strength.

5>. Thermal Conductivity: Lower than pure copper but significantly higher than carbon/stainless steels (beneficial for heat exchangers).

6>. Thermal Expansion: Coefficient similar to carbon steel, minimizing thermal stress issues when joined.

ASME SB111 UNS C71500 Copper Nickel Tube Chemical Composition

Grade	C(Max)	Pb	Mn	P	S	Zn	Fe	Ni	Cu
C71500	0.05	0.02	1.0	0.02	0.02	0.50	0.4-1.0	29.0-33.0	Balance

ASME SB111 UNS C71500 Copper Nickel Tube Mechanical Properties

Properties	Metric	Imperial
Tensile strength, ultimate	372-517 MPa	54000-75000 psi
Tensile strength, yield (depending on temper)	88.0-483 MPa	12800-70100 psi
Elongation at break (in 381 mm)	45.0%	45.0%
Charpy impact	107 J	78.9 ft-lb
Machinability (UNS C36000 (free-cutting brass) = 100%)	20%	20%
Shear modulus	57.0 GPa	8270 ksi
Poisson's ratio	0.34	0.34
Elastic modulus	150 GPa	21800 ksi

Material Designation	Corresponding Material Symbol
Material Designation	GB/T8890	ASTM B111	BS2871	JIS H3300	DIN 1785
Copper-Nickel	BFe10-1-1	C70600 Pipe	CN102	C7060	CuNi10Fe1Mn
	BFe30-1-1	C71500 Pipe	CN107	C7150	CuNi30Mn1Fe
	(BFe30-2-2)	C71640	CN108	C7164	CuNi30Fe2Mn2
	(BFe5-1.5-0.5)	C70400	–	–	–
	B7	–	–	–	–
Aluminium Brass	HAL77-2	C68700 Tube	CZ110	C6870	CuZn20Al2
Admiralty Brass	HSn70-1	C44300 Tube	CZ111	C4430	CuZn28Sn1
Boric Brass	Hsn70-18	–	–	–	–
Boric Brass	HSn70-1 AB	–	–	–	–
Arsenical Brass	H68A	–	CZ126	–	–
Brass Tubes	H65/H63	C28000/C27200	CZ108	C2800/C2700	CuZn36/CuZn37

Applications

Marine & Offshore: Condenser & heat exchanger tubes, seawater piping systems (pumps, valves, fittings), desalination plant tubes, ballast systems.

Power Generation: Feedwater heaters, condensers, auxiliary cooling systems.

Chemical & Process: Handling corrosive fluids, process piping, evaporators.

Oil & Gas: Offshore platform seawater cooling systems, brine handling.

Copper products that GNEE can provide

copper pipe

High quality 99.9% pure copper pipe / straight copper tube / copper alloy pipe
Standard	ASTM,DIN,BS,CDA,JIS,GB
Material	T1,T2,C10100,C10200,C10300,C10400,C10500,C10700,C10800, C10910,C10920,TP1,TP2,C10930,C11000,C11300,C11400,C11500, C11600,C12000,C12200,C12300,TU1,TU2,C12500,C14200,C14420, C14500,C14510,C14520,C14530,C17200,C19200,C21000,C23000, C26000,C27000,C27400,C28000,C33000,C33200,C37000,C44300, C44400,C44500,C60800,C63020,C65500,C68700,C70400,C70600, C70620,C71000,C71500,C71520,C71640,C72200,etc.
Shape	Round,Square,Rectangular,etc.
Specifications	Round:wall thickness:0.2mm~120mm,outside diameter:2mm~910mm Square:wall thickness:0.2mm~120mm,size:2mm2mm~1016mm1016mm Rectangularwall thickness:0.2mm~120mm,size:2mm4mm~1016mm1219mm
Length	3m,5.8m, 6m, 11.8m, 12m, or as required.
Hardness	1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2hard,full hard,soft,etc
Surface	mill,polished,bright,oiled,hair line,brush,mirror,sand blast,or as required.
Price term	EXW, FOB, CFR, CIF, etc.
Payment term	T/T
Package	Export standard package: bundled wooden box, suit for all kinds of transport, or be required.
Delivery time	According to order quantity
Export to	Singapore,Indonesia,Ukraine,Korea,Thailand, Vietnam, Saudi Arabia, Brazil, Spain, Canada, USA, Egypt, Kuwait, Dubai, Oman, Kuwait, Peru, Mexico, Iraq, Russia,Malaysia, etc.
Application	Copper pipe is the first choice of residential housing water pipes, heating, cooling pipes installed.Copper products are widely used in aviation, aerospace, ships, military industry, metallurgy, electronics, electrical, mechanical, transportation, construction and other fields of the national economy.

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copper rod/bar

Straight copper rod/copper round bar
Standard	ASTM,DIN,BS,CDA,JIS,GB
Material	T1,T2,C10100,C10200,C10300,C10400,C10500,C10700,C10800, C10910,C10920,TP1,TP2,C10930,C11000,C11300,C11400,C11500, C11600,C12000,C12200,C12300,TU1,TU2,C12500,C14200,C14420, C14500,C14510,C14520,C14530,C17200,C19200,C21000,C23000, C26000,C27000,C27400,C28000,C33000,C33200,C37000,C44300, C44400,C44500,C60800,C63020,C65500,C68700,C70400,C70600, C70620,C71000,C71500,C71520,C71640,C72200,etc.
Shape	Round,Square,Rectangular,etc.
Specifications	Diameter:3~200mm
Length	3m,5.8m, 6m, 11.8m, 12m, or as required.
Hardness	1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2hard,full hard,soft,etc
Surface	mill,polished,bright,oiled,hair line,brush,mirror,sand blast,or as required.
Price term	EXW, FOB, CFR, CIF, etc.
Payment term	T/T
Package	Export standard package: bundled wooden box, suit for all kinds of transport, or be required.
Delivery time	According to order quantity
Export to	Singapore,Indonesia,Ukraine,Korea,Thailand, Vietnam, Saudi Arabia, Brazil, Spain, Canada, USA, Egypt, Kuwait, Dubai, Oman, Kuwait, Peru, Mexico, Iraq, Russia,Malaysia, etc.
Application	A copper rod is a type of colored metal processing bar stock with high electrical conductivity. It is mainly divided into brass rods and copper rods. It is applied in water heating and bathroom fittings, small hardware, valves, marine pumps, atomizing device structural components, friction accessories, etc.

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copper plate/sheet/strip

Size	Width: 10mm to 2000mm, Thickness: 10mm to 500mm, Length: 0.5m to 12m, All sizes can be according to customer's requirements.
Hardness	1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2hard,full hard.
Surface	Polished,bright,oiled,hair line,brush,mirror,or as required
Package	Plastic film with Wooden case or wooden pallet
Delivery time	Prompt delivery or upon your order quantity.
Quality Control	Mill Test Certification is supplied with shipment,Third Part Inspection is acceptable.
Application	widely used inair conditioners,refrigerators,electric,solar water heater, polished pipe an be used in decorative,such as stair rail. Also can be made according to your required.
Shape	Round, Square, Oval, can be customized

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copper wire

Item	Copper Wire
Standard	ASTM,DIN,BS,CDA,JIS,GB
Material	T1,T2,C10100,C10200,C10300,C10400,C10500,C10700,C10800, C10910,C10920,TP1,TP2,C10930,C11000,C11300,C11400,C11500, C11600,C12000,C12200,C12300,TU1,TU2,C12500,C14200,C14420, C14500,C14510,C14520,C14530,C17200,C19200,C21000,C23000, C26000,C27000,C27400,C28000,C33000,C33200,C37000,C44300, C44400,C44500,C60800,C63020,C65500,C68700,C70400,C70600, C70620,C71000,C71500,C71520,C71640,C72200,etc.
Shape	Round
Specifications	As required.
Length	As required.
Hardness	1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2hard,full hard,soft,etc
Surface	mill,polished,bright,oiled,hair line,brush,mirror,sand blast,or as required.
Price term	EXW, FOB, CFR, CIF, etc.
Payment term	T/T
Package	Export standard package: bundled wooden box, suit for all kinds of transport, or be required.
Delivery time	According to order quantity
Application	Copper wire, as a conductive material, is widely used in power transmission and electronic devices. Transformers, inductors, connectors and other components are likely to use copper wire. Besides, the windings of motors and generators in industrial equipment may also be important application scenarios of copper wire.

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Copper CNC machined parts

Custom CNC Machining Parts of Most Materials
Quotation	According to your drawing(size, material, thickness, processing content, and required technology, etc)
Materials Avaiable	Brass,Stainless Steel,Q235&Q345 steel, Zinc-plate Sheet,Stainless Steel, Aluminum,Copper, etc.
Surface Treatment	Zinc Plating, chrome plate, powder coating, anodizing, wire drawing, silk-screen printing, etc
Processing	Laser Cutting, Precision Stamping, CNC Bending, CNC Milling, CNC Turning, Threading, Riveting, Drilling, CNC Punching,Die Casting, Laser Welding, etc.
Testing Equipment	CMM/Tool microscope/multi-joint arm/Automatic height gauge/Manual height gauge/Dial gauge/Roughness measurement
Drawing Formats	PRO/E, Auto CAD, Solid Works , UG, CAD / CAM / CAE, PDF
Our Advantages	1.) 24 hours online service & Quickly Quote/Delivery. 2.) 100% QC quality inspection before delivery, and can provide quality inspection form. 3.) 18+ years of experience in the CNC machining area and have a senior design team to offer perfect modification suggestions.
Tolerance丨Surface Roughness	Generally +/-0.1-0.2mm
Sample service	Avaliable before bulk order. Samples charge according your design, The sample fee can be used as the payment for mass goods.

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About Us

Founded in 2008, we specialize in exporting premium copper products. Our manufacturing leverages continuous casting lines and precision drawing machines. Rigorous quality control, including eddy current testing and spectrometer analysis, guarantees the superior performance of our copper tubes and coils for global applications.

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