ASTM B467 Welded Copper-Nickel Pipe

Grade: UNS C70600, UNS C71500
Outside Diameter (OD) : 73-761mm
Wall Thickness (WT): 2.11-11.5mm
Length: 6000-12000mm

Features

ASTM B467 Welded Copper-Nickel Pipe

Chemical Composition (wt.%)

Alloy	Copper (Cu)	Nickel (Ni)	Lead (Pb) max	Iron (Fe)	Zinc (Zn) max	Manganese (Mn) max	Sulfur (S) max	Phosphorus (P) max
C70600	Remainder	9.0–11.0	0.05	1.0–1.8	1	1	0.02	0.02
C71500	Remainder	29.0–33.0	0.05	0.40–1.0	1	1	0.02	0.02

Mechanical Properties

Annealed Temper (WO61)

Alloy	Outside Diameter (in)	Tensile Strength (min ksi)	Yield Strength at 0.5% Extension Under Load (min ksi)	Elongation in 2 in. (min %)
C70600	up to 4.5	40	15	25
C70600	over 4.5	38	13	25
C71500	up to 4.5	50	20	30
C71500	over 4.5	45	15	30

Drawn Tempers

Alloy	Outside Diameter (in)	Wall Thickness (in)	Tensile Strength (min ksi)	Yield Strength at 0.5% Extension Under Load (min ksi)	Elongation in 2 in. (min %)
C71500	up to 2 (for specific wall thicknesses)	Specified in the document	72	50	12.0 (for up to 0.048 in wall thickness) / 15.0 (for over 0.048 in)

As-Welded Pipe

Alloy	Condition	Outside Diameter (in)	Tensile Strength (min ksi)	Yield Strength at 0.5% Extension Under Load (min ksi)	Notes
C70600	welded from annealed strip	up to 4.5	45	30
C70600	welded from cold-rolled strip	up to 4.5	54	45

Technical Specifications

Specification	Value
Standard	ASTM B467 Welded Copper-Nickel Pipe
Grade	UNS C70600 (CuNi90-10, CuNi10Fe1Mn, W.Nr 2.0872, EN CW352H) UNS C71500 (CuNi70-30, CuNi30Fe1Mn, W.Nr 2.0882, EN CW354H)
Manufacturing Process	Arc-welded
Seam Type	Welded
Welded Pipe SPS Diameters	Outside Diameter (OD): NPS 4″ -48″ (73-761mm) Wall Thickness (WT): 2.11-11.5mm
Length	6000-12000mm
Delivery Condition	As-welded, Welded and Annealed, Welded and Cold Drawn, Fully Finished
Inspection Certificate	EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection)
Test	Chemical analysis ASTM E255, Tensile test ASTM E8/E8M, NDE Test ASTM E243

Packing

Both ends are bevelled to an angle of 30°+5°/0°, and equipped with plastic pipe caps or bevel protectors, small-diameter pipes are packaged in wooden crates, and large-diameter pipes are wrapped in woven bags.

Application

Marine Engineering: Copper-nickel alloys are extensively used in marine applications due to their excellent resistance to seawater corrosion. They are used for piping, heat exchangers, and condensers in shipbuilding and offshore platforms.
Desalination Plants: These alloys are suitable for desalination plants, particularly in multi-stage flash distillation and reverse osmosis systems, due to their corrosion and biofouling resistance, which is critical for maintaining efficiency in desalination processes.
Heat Exchangers and Condensers: Copper-nickel alloys’ excellent heat transfer properties make them ideal for heat exchangers and condensers in power plants, refineries, and petrochemical plants, mainly where seawater is used as a coolant.
Fire Fighting Systems: Copper-nickel pipes are used in seawater firefighting systems, sprinkler systems, and hydrants on offshore platforms and ships because of their durability and resistance to seawater.
Oil and Gas Production: In the oil and gas industry, these alloys are used for piping, hydraulic lines, and, in some cases, for crude oil distillation columns. Their corrosion resistance is beneficial for handling sour gas and environments with high sulfur content.
Power Generation: Copper-nickel tubes are used in the condensers of power stations and nuclear power plants due to their corrosion resistance and ability to prevent biofouling, thereby maintaining efficiency over time.
Seawater Piping Systems: Copper-nickel pipes are used in seawater piping systems in marine and coastal facilities due to their excellent resistance to corrosion and biofouling.
Automotive Applications: Copper-nickel alloys’ corrosion resistance benefits some automotive applications, like brake lines and oil coolers.