Copper Nickel 90/10 Pipes Supplier │ ASTM B466 UNS C70600 │ Marine & Offshore

Copper Nickel 90/10 Pipes Supplier

Solitaire Overseas is a trusted Cupro Nickel Pipes Supplier & Exporter. Our Cu-Ni 90/10 Pipe is a 90% copper, 10% nickel alloy that also contains small but significant additions of iron and manganese to improve overall strength and corrosion resistance. These Cupro Nickel 90 10 EFW Pipes are alloys that have reasonable power and thermal stability at high temperature levels. In clean natural salt water or in seawater chlorinated to levels sufficient to control biological metabolism, CuNi 90/10 is resistant to localized attack.

Due to its biofouling resistance, there are a limited number of possible sites for pitting attack, still in slow moving water; however, in polluted water containing hydrogen sulfide, pitting regularly takes place in the form of wide and low pits. The undercut type of pitting normally associated with stainless steel is not common for CuNi 90/10. For a comparison of grades, see our page on Cupro Nickel 70/30 Pipes Supplier & Exporter or read our blog on Copper Nickel Tubes & Pipes — Grades, Uses and Benefits.

Copper Nickel 90 10 Seamless Pipes

Copper Nickel 90 10 Seamless Tube

Copper Nickel 90 10 Welded Pipes

Copper Nickel 90 10 Welded Tube

Cu-Ni 90 10 Round Pipe

Cu-Ni 90 10 Round Tube

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Copper Nickel 90/10 Pipes Supplier Overview
Specification of Cu-Ni 90/10 Pipes
Types of Copper Nickel 90/10 Seamless & Welded Pipe
Cu-Ni 90/10 Pipes Equivalent Grades
Cu-Ni 90/10 Pipes Chemical Composition
Cu-Ni 90/10 Pipes Mechanical & Physical Properties
90/10 Copper Nickel Tube Tolerance
Copper Nickel 90/10 Pipe Standard Comparison Chart
Copper Nickel 90/10 Pipe Size Chart
Copper Nickel 90/10 Pipe Pressure Rating
Cu-Ni 90/10 Pipe Application
Testing of CuNi 90/10 Pipes
Packaging of CuNi 90/10 Pipes
Related Products
Frequently Asked Questions

Specification of Cu-Ni 90/10 Pipes

Property	Details
Outside Diameter	1/2" to 6"
Thickness	0.15 mm to 1.50 mm
Length	Single Random, Double Random & Required Length
Schedule	SCH20, SCH30, SCH40, STD, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Type	Welded / ERW / Seamless / Fabricated
Manufacturing Method	Cold Rolled / Hot Rolled
Standards	ASTM B466, ASTM B467, ASTM B111, ASTM B552, ASTM B543, ASTM B395 / ASME SB466, SB467, SB111, SB552, SB543, SB395
ASME / ASTM Equivalent	ASME SB466
Forms	Square, Round, Hydraulic, Rectangular, Coil, U Shape, Pancake Coil
Finish	Cold Finish, Bright Annealed, Annealing, Pickling, Polished
Testing	Chemical Testing, PMI Testing, Mechanical Testing, Visual Inspection, NABL Approved Lab Reports
End Type	Plain End, Beveled End, Threaded
Applications / Uses	Heat Exchangers, Brake Lines, Distiller Tubes, Condensers, Evaporator Tubes

Types of Copper Nickel 90/10 Seamless & Welded Pipe

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Supplying ASTM B466 / ASME SB466 CuNi 90/10 pipes (UNS C70600) globally. Large-volume orders welcome. Our team responds within 24 hours with pricing, MTRs, and dimensional data.

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Cu-Ni 90/10 Pipes Equivalent Grades

STANDARD	UNS	WERKSTOFF NR.
Cu-Ni 90/10	C70600	2.0872

Cu-Ni 90/10 Pipes Chemical Composition

Element	Cu-Ni 90/10
Cu	88.6 min
Mn	1.0 max
Pb	0.05 max
Ni	9–11
Fe	1.8 max
Zn	1 max

Cu-Ni 90/10 Pipes Mechanical & Physical Properties

Property	Cu-Ni 90/10
Density	0.323 lb/in³ at 68°F
Melting Point	2260°F
Tensile Strength	50,000 psi (345 MPa)
Yield Strength (0.2% Offset)	15,000 psi (103 MPa)
Elongation	30%

90/10 Copper Nickel Tube Tolerance

Diameter	Tolerances
Inch (mm)
Over 3 to 4 Inch (76.2 to 102mm), incl	0.006 (0.15)
Over 12 Inch (305 mm)	0.5 %
Over 2 to 3 Inch (50.8 to 76.2 mm), incl	0.005 (0.13)
Over 5 to 6 Inch (127 to 152mm), incl	0.009 (0.23)
Over 4 to 5 Inch (102 to 127mm), incl	0.008 (0.20)
Over 8 to 10 Inch (203 to 254mm), incl	0.013 (0.33)
Over 6 to 8 Inch (152 to 203mm), incl	0.010 (0.25)
Over 10 to 12 Inch (254 to 305mm), incl	0.015 (0.38)

Copper Nickel 90/10 Pipe Standard Comparison Chart

	ASTM B466 C70600	JIS H 3300 C7060	BS 2871 CN 102	DIN 86019 CuNi10Fe1.6Mn 2.1972	MIL-T-16420K C70600	EEMUA 234 UNS 7060X
Fe%	1.0-1.8	1.0-1.8	1.0-2.0	1.5-1.8	1.0-1.8	1.5-2.0
Ni%	9.0-11.0	9.0-11.0	10.0-11.0	9.0-11.0	9.0-11.0	10.0-11.0
Cu%	Balance	Cu+Ni +Fe+Mn Min.99.5	Balance	Balance	Min.86.5	Balance
Mn%	Max.1.0	0.2-1.0	0.5-1.0	0.5-1.0	Max1.0	0.5-1.0
Pb%	Max.0.02	Max.0.05	Max.0.01	Max.0.03	Max.0.02	Max.0.01
C%	Max.0.05		Max.0.05	Max.0.05	Max.0.05	Max.0.05
Zr%						Max.0.03
P%	Max.0.02			Max.0.02	Max.0.02	Max.0.02
S%	Max.0.02		Max.0.05	Max.0.015	Max.0.02	Max.0.02
Zn%	Max.0.50	Max.0.50		Max.0.15	Max.0.05	Max.0.20
Others			Max.0.30	Max.0.30		Max.0.30

Copper Nickel 90/10 Pipe Size Chart

Wall	Sizes ( O.D.)
.010	1/16", 1/8", 3/16"
.020	1/16", 1/8", 3/16", 1/4", 5/16", 3/8"
.012	1/8"
.016	1/8", 3/16"
.028	1/8", 3/16", 1/4", 5/16", 3/8", 1/2", 3/4", 1", 1 1/2", 2"
.035	1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4"
.049	3/16", 1/4", 5/16", 3/8", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4"
.065	1/4", 5/16", 3/8", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 3/4", 2", 2 1/2", 3"
.083	1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 7/8", 2", 2 1/2" ,3"
.095	1/2", 5/8", 1", 1 1/4", 1 1/2", 2"
.109	1/2", 3/4", 1", 1 1/4", 1 1/2", 2"
.120	1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 2", 2 1/4", 2 1/2", 3"
.125	3/4", 1", 1 1/4", 1 1/2", 2", 3", 3 1/4"
.134	1"
.250	3"
.375	3 1/2"

Copper Nickel 90/10 Pipe Pressure Rating

Pipe

Pipe O.D. in.	.028	.030	.035	.049	.065	.083	.095	.109	.120	0.134
Working Pressure (psig)
1/8	2700	3000	3600
3/16	1800	1900	2300	3400
1/4	1300	1400	1600	2700	3500
5/16				1300	2200	2700
3/8				1000	1600	2200
1/2				800	1100	1600	2100
5/8					900	1200	1600	1900
3/4					700	1000	1300	1500	1800
7/8					600	800	1100	1300	1500
1					500	700	900	1100	1300	1500
1 1/8						600	800	1000	1100	1300

Tube :

Tube O.D. in.	.028	.030	.035	.049	.065	.083	.095	.109	.120	0.134
Working Pressure (psig)
1/8	2700	3000	3600
3/16	1800	1900	2300	3400
1/4	1300	1400	1600	2700	3500
5/16				1300	2200	2700
3/8				1000	1600	2200
1/2				800	1100	1600	2100
5/8					900	1200	1600	1900
3/4					700	1000	1300	1500	1800
7/8					600	800	1100	1300	1500
1					500	700	900	1100	1300	1500
1 1/8						600	800	1000	1100	1300

Cu-Ni 90/10 Pipe Application

CuNi 90/10 Pipes are used across various application industries. For complete form coverage in copper-nickel, also see our Cupro Nickel 90/10 Tubes Supplier & Exporter and Copper Nickel Products pages.

Food Processing Industry
Fabrication Industry
Oil and Gas Industry
Chemical Industry
Plumbing
General Purpose Applications
Heating
Water Supply Systems
Power Plant
Paper & Pulp Industry

Testing of CuNi 90/10 Pipes

Mechanical Testing such as Tensile of Area, Hardness Test, Chemical Analysis – Spectro Analysis, Positive Material Identification tests are conducted. Other tests include Micro and Macro Test, Intergranular Corrosion (IGC) Test, Flattening Test, Flaring Test, and Pitting Resistance Test.

Packaging of CuNi 90/10 Pipes

We understand the importance of CuNi 90/10 Pipes packaging, especially during international shipments where the delivery has to pass through a number of channels to arrive at the final destination. We take proper care of packing. Usually pipes are packed in wooden cases/pallets and wrapped in environmental poly bags.

Frequently Asked Questions

What is the UNS number for Copper Nickel 90/10 pipe?

The UNS number is C70600. The grade is covered by ASTM B466 / ASME SB466 and is also known as CuNi 90/10 or cupro nickel 90/10. Werkstoff Nr. is 2.0872.

Why is copper nickel pipe preferred for seawater systems?

CuNi 90/10 (C70600) resists seawater corrosion AND releases copper ions that actively inhibit marine biofouling, eliminating cleaning downtime that plagues stainless steel and titanium systems.

When should I choose CuNi 90/10 over 70/30 copper nickel pipe?

Choose 90/10 for standard seawater cooling and firewater lines where cost efficiency is a priority. Upgrade to 70/30 for higher flow velocities, elevated temperatures, or more aggressive media.

What sizes and schedules are available for ASTM B466 CuNi 90/10 pipe?

We supply OD 1/2" to 6", schedules SCH20 through XXS, in seamless and welded form per ASTM B466 / ASME SB466. Large-volume and custom-length orders are accepted. Request a quote today.

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Solitaire Overseas supplies ASTM B466 / ASME SB466 CuNi 90/10 pipes (UNS C70600) in seamless and welded form to marine, shipbuilding, offshore, and desalination projects worldwide. Contact us for competitive pricing, full MTRs, and fast lead times.

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