Cupronickel or copper-nickel is an alloy of copper that contains nickel and strengthening elements, such as iron and manganese. Cupronickel is highly resistant to corrosion in seawater, because its electrode potential is adjusted to be neutral with regard to seawater. Because of this, it is used for piping, heat exchangers and condensers in seawater systems, as well as marine hardware, and sometimes for the propellers, crankshafts and hulls of premium tugboats, fishing boats and other working boats.

Please note: we may supply special diameters in small quantities at request

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Nickel Alloys Tubes
Sr. No.	Material	Size	Sch. & Swg.		Specification	Manufacturer
1	Cupro Nickel Hastelloy Nickel Monel Inconel Alloy 20 Duplex	6.35 mm OD To 152 mm OD	20 Swg. 18 Swg. 16 Swg.	14 Swg. 12 Swg. 10 Swg.	IS BS ASTM UNS	Imported & Chinan Mfg

UNS NICKEL MATERIAL GRADES
Nickel grade	UNS	Werkstoff	DIN
NICKEL 200	UNS N02200	24,066	Ni 99.2

Note:-
Nickel Alloy in Grade	Cupro Nickel / Copper Nickel BS 2871/ PART 3 CN 102,107, 108 (90/10, 70/30, 66/30/2/2) ASTM B 111 C 70600, 71500, 71640 Titanium ASTM B 338 Gr.1,2,3,7,9,11,12 Hastelloy C-4, C-22, C276, B-2, Nickel ASTM B 161- 200 & 201 , Monel ASTM B 165 -400 & K500, Inconel 600, 601, 625 & 825, Incolloy 800, 800H, Alloy 20 Duplex Steel SS 904L
In Form of	Round, Coil	‘U’ Shape etc.
In Length of	Standard & Cut length
Value Added Service	Draw & Expansion as per required Size & Length Bending Annealed & Pickled Machining Etc.
Test Certificate	Manufacturer Test Certificate Laboratory Test Certificate from Govt. Approved Lab. Under Third Party Inspection .
Application	Shipping Offshore Construction Condensers Heat Exchangers etc.
Specialize	Cupro Nickel Tube

Cupro Nickel Rods 90/10

Chemical Properties
Pb	0.05 Max.
Fe	1.00 - 1.80
Mn	1.00 Max.
Zn	1.00 Max.

Cu Ag Remainder Ni Co 9.00 - 11.00

Mechenical Properties Light Drawn
Flattening Test	Reqd. (After 'O')
U.T.S. ksi	45.00 Min
Y.S. at 0.5% Ext. ksi	35.00 Min.

Expansion Test 30% at 60 degree Reqd. (After 'O')

Annealed Temper
Flattening Test	Reqd.
Grain Size at 75 X mm Avg.	0.010 - 0.045
U.T.S. ksi	40.00 Min.
Y.S. at 0.5% Ext. ksi	15.00 Min.

Expansion Test 30% at 60 degree Reqd.

Cupro Nickel Rods 90/10

Chemical Properties
Sn	0.10 Max.
Pb	0.05 Max
Ni	4.00 - 5.00
Fe	0.10 Max.
Mn	0.25 Max.
As	0.10 Max.
Cu Ag	95.00 - 96.000
Sb	0.01 Max.
Bi	0.0025 Max.

Oxygen (O2) 0.08 Max.

Mechenical Properties Annealed
U.T.S. MPa	216 - 275 (Strip cut from Ring Tube)
%Elongation at 5.65Sq.Rt So G.L.	40.00 Min. (Strip cut from Ring Tube)
Flattening Test	Reqd.
Bend Test	Reqd. (180 degree close)

Cupro Nickel Tubes 90/10 for Heat Exchangers & Condensers

These Cupro Nickel tubes & pipes for Heat Exchangers & Condensers are very important for all Industrial fields. The company has experience in these areas and is able to supply these tubes in accordance with most international standards and special customer requirements.

Cupro Nickel Tubes 90/10 for Automobile Industries

The Move To Copper-Nickel Tubing 
Copper had been proved since the early days to have many good attributes. It was easy to bend and had very high corrosion resistance, but there was concern about its low corrosion-fatigue strength. When copper-nickel was introduced, it displayed corrosion resistance similar to copper, higher general strength and better fatigue strength. Good formability allows ease of flaring and bending, and although the metal cost is greater than that of steel alternatives, copper-nickel is very attractive in view of its extra life, trouble-free installation and safety/reliability characteristics. 

Properties of Copper-Nickel Brake Tubing
The copper-nickel alloy used for brake tubing typically contains 10% nickel, with iron and manganese additions of 1.4% and 0.8% respectively. The product conforms to ASTM B466 (American Society for Testing and Materials), which specifies dimensions, tensile strength and yield strength. Formability and internal cleanliness conform to specifications SAE J527, ASTM A254 and SMMT C5B (Society of Motor Manufacturers and Traders). Also, the alloy meets the requirements for pressure containment, fabrication and corrosion resistance for ISO 4038 (International Standards Organization) and SAE J1047.
The mechanical properties of alloy C70600 in comparison with steel and copper are shown in

Dimension Tolerance
Material	Ultimate Tensile Strength1000 psi (MPa)	Yield Strength 0.5% Ext.under Load 1000 psi (MPa)					YElongation % in 2 in.	Fatigue Strength (10x7 cycles) 1000 psi (MPa)	Burst Pressure* 1000 psi (MPa)
Copper-brazed Steel	48-55 (0.330-0.380)	28-34 (0.190-0.235)					30-40	30 ( 0.210)	19.5  (0.135)
C12200-Phosphorus deoxidized Copper	32-38 (0.220-0.265)	10-14 (0.070-0.100)					45-60	10  (0.070)	12 ( 0.083)
C70600-Copper Nickel 90-10	48-54 (0.330-0.370)	16-22 (0.110-0.150)					40-55	15  (0.100)	19 ( 0.130)

Corrosion Resistance
For many years prior to its application as a brake tubing material, alloy C70600 had been used in ships, power station condensers and hydraulic lines on tankers, and had displayed excellent resistance to saline conditions. Early tests revealed that copper-nickel has almost the same resistance to burst pressure as steel. In testing, however, when exposed to salt spray over 180 days, steel's burst strength decreases significantly. The copper alloy remains consistently resistant.

Curpo Nickel Tubes 95/5 & 90/10 for Marine Application

Chemical Composition

Classi- fication

Class

Chemical Composition (%)

Related Standards

Cu

Zn

Pb

Fe

P

Sn

Ni

Mn

Al

As

Other

ISS

KS

JIS

ASTM

BS

DIN

Cu-Ni Tube

1

rem.

1.00 max

0.05 max

1.3-1.7

-

-

4.8-6.2

0.3-0.8

-

-

IS:15 45  CuNi5 Fe

D 5301 C7040

CuNi 95 5  7040

B 111  C70400

2871  CN101

1785  CuNi 5Fe

2

rem.

1.00 max

0.05 max

1.0-1.8

-

-

9.0-11.0

1.0-max

-

-

IS:15 45 CuNi 10Fe1

C 7060

CuNi 90:10 C 7060

C  70600

CN102

CuNi 10Fe

Mechanical Properties

Classification	Temper	Designation	Cu Alloy UNS No.	Tensile Test
				Outside diameter (mm)	Thickness (mm)	Tensile Strength Kgf/mm2	Elongation (%)	Yield Strength (kg/mm2)
Copper Nickel Tube	061	Annealed	C70400	5-250mm	0.8-10	27(260)	9(85)	-
	H55	Light Drawn	C70400	5-250mm	0.8-10	28(275)	-	21(205)
	061	Annealed	C70600	5-250mm	0.8-10	28(275)	-	11(105)
	H55	Light Drawn	C70600	5-250mm	0.8-10	32(310)	-	25(240)

Dimensional Range:

• Outer Diameter: 4.00 to 22.00 mm
• Wall Thickness: Between 0.15mm and 1.50 mm
• Length: Up to 6 mtrs

End Applications:

• Heat Exchangers, Oil Coolers, Radiators, High Capacity Power Plants, Ship Building & Ship Repairs, Condensers, Offshore Oil rigs, Distiller Tubes, Evaporators, Ferrules etc

Other names

Aside from cupronickel, many other terms exist which describe the same material. Still registered as tradenames are Alpaka or Alpacca' (registered trademark), Argentan Minargent, and the French term name Cuivre blanc. Occasionally, cupronickel is also referred to as "hotel silver", plata alemana (Spanish for "German silver"), "German silver" and "Chinese silver".

UNS standard compositions* of wrought alloys (in at%). Maximum or range.

Alloy UNS No.	Common name	European spec	Ni	Fe	Mn	Cu
C70600	90-10	CuNi10Fe	9-11	1-1.8	1	Remainder
C71500	70-30	CuNi30Fe	29–33	0.4–1.0	1	Remainder
C71640	66-30-2-2		29–32	1.7–2.3	1.5–2.5	Remainder

Properties of some Cu-Ni alloys

Alloy	Density g/cm3	Thermal conductivity W/(m·K)	TEC µm/(m·K)	Electrical resisitivity µOhm·cm	Elastic modulus GPa	Yield strength MPa	Tensile strength MPa
90-10	8.9	50	17	19	135	105	275
70-30	8.95	29	16	34	152	125	360
66-30-2-2	8.86	25	15.5	50	156	170	435

Nickel Tube Application
Nickel Tube Uses	Architecture and construction Aerospace Nuclear Power Fertilizers Valve & Pumps Petrochemical Motor industry Food and drink Electronics Transport and traffic Pulp and paper industry Medicine Energy industry Chemicals industry Nickel Alloy in Pulp and Paper
Nickel Tube Order & Packing Information
	Min. Order: 10 Pieces (or please enquire for your customized order) Trade Terms: FOB, CIF Payment Terms: L/C, T/T Packing: as per requirement Place of Origin:JIANGSU, China Means of Transport: Land, Ocean Delivery Date: one or two week