Product Details

Copper-nickel alloys are often referred to as cupronickel. Pure copper plus nickel can significantly improve strength, corrosion resistance, electrical resistance, and thermoelectricity. It is mainly used in seawater desalination and seawater heat exchange systems, automobile manufacturing, the shipbuilding industry, coins, resistance wires, and thermocouples. According to different performance characteristics and uses, industrial cupronickel is divided into two types: structural cupronickel and electrical cupronickel, which respectively meet various corrosion resistance and special electrical and thermal properties.

Among them, the most widely used iron white copper is C70600 and C71500. C71500 alloy has the advantages of good seawater erosion-corrosion resistance, high heat transfer coefficient, excellent mechanical/welding performance, and inhibition of marine microorganism adhesion. Roads, heat exchangers in power plants, condensers in coastal nuclear power plants, and brine heaters in multi-stage flash devices for seawater desalination. At the same time, C71500 alloy has higher strength and is also used in high-strength structural parts such as shafts, fasteners, valve stems, and flanges of some marine installations.

Specifications of C71500 CuNi 70-30 Copper Nickel Tube
Specifications: ASTM B111/ASME SB111, ASTM B151/ASME SB151, ASTM B466/ASME SB466, ASTM B467/ASME SB467
Standards: ASTM,DIN,EN,ISO,JIS,GB
Material: C71500 (CuNi 70-30 copper nickel alloy)
Tube Type: Seamless, Welded, ERW, Fabricated, etc.
Outside Diameter: 4mm-22mm
Wall Thickness: 0.15mm-1.50mm
Schedule: SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Length: Single Random, Double Random, or Cut Length
Finish: Annealed & Pickled, Bright Annealing, Polished
Ends: Plain End, Beveled End, Threaded
Payment Terms: T/T, L/C
Delivery Time: As per quantity required

Chemical Composition (%) of C71500 CuNi 70-30 Copper Nickel Tube

C, max	Pb, max	Mn, max	P, max	S, max	Zn, max	Fe	Ni	Cu
0.05	0.02	1.00	0.020	0.020	0.50	0.40-1.00	29.0-33.0	Rest

Mechanical Properties of C71500 CuNi 70-30 Copper Nickel Tube

Density	Melting Point	Yield Strength (0.2%Offset)	Tensile Strength	Elongation
0.323 lb/in3 at 68℉	2260℉	20000 psi	50000 Psi	30%

Sizes of C71500 CuNi 70-30 Copper Nickel Tube

Wall	Sizes ( O.D.)
0.010	1/16", 1/8", 3/16"
0.020	1/16", 1/8", 3/16", 1/4"", 5/16", 3/8"
0.012	1/8"
0.016	1/8", 3/16"
0.028	1/8", 3/16", 1/4", 5/16", 3/8", 1/2", 3/4", 1", 1 1/2", 2"
0.035	1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4"
0.049	3/16", 1/4", 5/16", 3/8", 1/2", 9/16", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4"
0.065	1/4", 5/16", 3/8", 1/2", 9/16", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 3/4", 2", 2 1/2", 3"
0.083	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"
0.095	1/2", 5/8", 1", 1 1/4", 1 1/2", 2"
0.109	1/2", 3/4", 1", 1 1/4", 1 1/2", 2"
0.120	1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 2", 2 1/4", 2 1/2", 3"
0.125	3/4", 1", 1 1/4", 1 1/2", 2", 3", 3 1/4"
0.134	1"
0.250	3"
0.375	3 1/2"

Equivalent Grades of C71500 CuNi 70-30 Copper Nickel Tube

STANDARD	UNS	WERKSTOFF NR.
CuNi 70-30 Copper Nickel	C71500	2.0882

Features of C71500 CuNi 70-30 Copper Nickel Tube
- Extremely high oxidation resistance
- Excellent natural resistance to biofouling
- Good cold and hot processing ability
- Extremely high hardness and strength
- Very good thermal stability
- Strong corrosion resistance to seawater

Application of C71500 CuNi 70-30 Copper Nickel Tube
C71500 CuNi 70-30 copper nickel tubes can be used in oil refineries, heat exchangers, tanks, brine pipes, tidal power plants, chemical processes, still pipes, marine services, condensers, tube sheets, sales water pipes, pumps, desalination plants, pressure vessels, etc.