We are reckoned amongst the trusted manufacturers and exporters of a wide range of C71500 Copper Nickel Pipes. Known for their flexibility, high corrosion resistance, superior tensile strength, trouble free installation and maintenance, these are in demand in different industries. To ensure complete client satisfaction, the entire array of 70/30 Copper Nickel Pipe is examined thoroughly on standard quality parameters before final delivery.
Specifications – Equivalencies Copper Nickel
ASTM B 111 C71500 Copper Nickel Pipe
ASME SB 111 C71500 Copper Nickel Pipes
BS 2871 Part 3 CN 102 Copper Nickel Tubes
EN 12451 CuNi30 Fe1Mn Copper Nickel Tube
NFA51 102 CuNi30 Fe1Mn Copper Nickel Pipes
JIS H 3300 C7150 Copper Nickel Pipes
Copper Nickel Applications
Copper nickel alloys are used in the following applications:
Hydraulic lines
Fish cages for aquaculture
Heat exchangers and condensers
Desalination units
Sea water pipework
Tubes for power plants and ships
Offshore fire water systems
Pumps, valves, sheathing and fittings for ship hulls
c71500 chemical composition
| Element | CU | FE | PB | MN | NI | ZN |
|---|---|---|---|---|---|---|
| Min/Max | Rem | 0.40 – 1.0 | 0.05 | 1 | 29.0 – 33.0 | 1 |
| Nominals | 69.5000 | 0.5000 | – | – | 30.0000 | – |
c71500 mechanical properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength, ultimate | 303-414 MPa | 43900-60000 psi |
| Tensile strength, yield (depending on temper) | 110-393 MPa | 16000-57000 psi |
| Elongation at break (in 254 mm) | 42.00% | 42.00% |
| Machinability (UNS C36000 = 100%) | 20% | 20% |
| Shear modulus | 52.0 GPa | 7540 ksi |
| Poisson's ratio | 0.34 | 0.34 |
| Elastic modulus | 140 GPa | 20300 ksi |
Fabrication
| JOINING TECHNIQUE | SUITABILITY |
|---|---|
| Brazing | Excellent |
| Butt Weld | Excellent |
| Capacity for Being Cold Worked | Good |
| Capacity for Being Hot Formed | Good |
| Coated Metal Arc Welding | Good |
| Gas Shielded Arc Welding | Excellent |
| Machinability Rating | 20 |
| Oxyacetylene Welding | Fair |
| Seam Weld | Good |
| Soldering | Excellent |
| Spot Weld | Good |
Key Features
High ductility and toughness
Excellent resistance to erosion and corrosion in seawater
Inherent resistance to biofouling
Excellent fabrication and welding properties
Retention of mechanical properties down to cryogenic temperatures
Tube Size
Outer Dia Inch – Imperial: ¼" to 4 ¼"
Outer Dia mm – Metric: 8 mm to 108 mm
FAQ
Q1: What is the difference between C71500 and C70600 copper nickel pipes?
C71500 has higher strength and better erosion resistance than C70600. C71500 (70/30) contains 29-33% nickel with tensile strength 303-414 MPa. C70600 (90/10) contains 9-11% nickel with lower strength. For high-velocity seawater above 2.5 m/s, choose C71500. For general marine use, C70600 is more economical.
Q2: What are the standard specifications for C71500 copper nickel pipes?
ASTM B111 C71500 and ASME SB111 C71500 are the primary standards. Other equivalents include BS 2871 Part 3 CN 102, EN 12451 CuNi30 Fe1Mn, NFA51 102 CuNi30 Fe1Mn, and JIS H 3300 C7150.
Q3: What is the chemical composition of C71500 copper nickel?
C71500 contains Cu balance (nominally 69.5%), Ni 29-33%, Fe 0.40-1.0%, Mn ≤1%, Pb ≤0.05%, Zn ≤1%. The iron content (0.40-1.0%) is critical for seawater corrosion resistance.
Q4: What are the mechanical properties of C71500 copper nickel pipes?
Tensile strength: 303-414 MPa, yield strength: 110-393 MPa (depends on temper), elongation: 42%, machinability rating: 20%. Elastic modulus is 140 GPa, shear modulus 52.0 GPa.
Q5: What size range is available for C71500 copper nickel pipes?
Outer diameter: 1/4" to 4 1/4" (8 mm to 108 mm). Wall thickness: 0.8 mm to 3.0 mm. Tolerance: ±0.030 mm. Length is per condenser and heat exchanger design requirements.
Q6: What welding methods are suitable for C71500 copper nickel pipes?
Gas shielded arc welding and butt welding are Excellent; coated metal arc welding, seam weld, and spot weld are Good; oxyacetylene welding is Fair. Brazing and soldering are Excellent. For seawater service, use ERNi-7 filler metal.
Q7: What are the key features of C71500 copper nickel pipes?
High ductility and toughness, excellent resistance to erosion and corrosion in seawater, inherent resistance to biofouling, excellent fabrication and welding properties, retention of mechanical properties down to cryogenic temperatures.
Q8: What are the common applications for C71500 copper nickel pipes?
Hydraulic lines, fish cages for aquaculture, heat exchangers and condensers, desalination units, sea water pipework, tubes for power plants and ships, offshore fire water systems, pumps, valves, sheathing and fittings for ship hulls.
Q9: What is the delivery lead time for C71500 copper nickel pipes?
Within 30 days receiving the deposits. Payment terms: L/C (Letter of Credit) or T/T (Telegraphic Transfer). HS Code: 74112200.
Q10: What temper options are available for C71500 copper nickel pipes?
Soft annealed as standard. Special tempers available on request. Soft annealed temper is best for bending, flaring, and tube expansion into tubesheets.
Detection & Quality Control
| Test Method | Purpose | Acceptance Criteria |
|---|---|---|
| Optical Emission Spectrometry | Verify c71500 chemical composition | Ni 29-33%, Fe 0.40-1.0%, Cu balance |
| Tensile Test | Confirm c71500 mechanical properties | UTS 303-414 MPa, Yield 110-393 MPa, Elong ≥42% |
| Flattening Test | Ductility for tube forming | No cracks when flattened |
| Hardness Test | Uniformity of temper | Per soft annealed specification |
| Dimensional Check | OD, wall, length | OD tolerance ±0.030 mm |
| Hydrostatic Test | Leak tightness | Per ASTM B111 |
| Eddy Current Test (when specified) | Detect pits and wall variations | Per ASTM E243 |
Packaging
c71500 copper pipe is packaged as follows per the page:
End Capped – plastic caps on both ends to prevent damage
Shrinking Wrapped Each Tube – individual shrink wrap for protection
Into Wooden Box – wooden boxes for export shipment
| Packaging Type | Details |
|---|---|
| End caps | Plastic caps on both tube ends |
| Individual wrapping | Shrink wrap on each tube |
| Outer packaging | Wooden boxes for export |
Factory Equipment
| Equipment | |
|---|---|
| Induction melting furnaces | Precise control of Ni 29-33%, Fe 0.40-1.0% |
| Continuous casting | Produces solid billet |
| Extrusion press | Pierces billet to hollow shell |
| Cold pilger mills | Reduces OD and wall thickness |
| Draw benches | Final sizing, smooth finish |
| Annealing furnaces | Soft annealed temper production |
| Straightening machines | Achieves straightness |
| Hydrostatic testers | Pressure testing |
| Metallurgical lab | OES, tensile, hardness verification |
Our Full Product Range
| Product Form | Common Standards | Typical Alloy Grades | Size Range | Typical Applications |
|---|---|---|---|---|
| Copper Pipe & Tube | ASTM B111, B466, ASME SB111, SB466, EN 12451 | C71500, C70600, C12200, C68700, C44300 | OD: 1/4" to 12" (6-219 mm); Wall: 0.5-12 mm | Condensers, heat exchangers, seawater piping, hydraulic lines, desalination |
| Copper Wire | ASTM B624, B470, EN 13601 | C10100, C11000, C18200, C71500, C70600 | Diameter: 0.1-12 mm | Electrical conductors, welding filler, fasteners |
| Copper Strip & Coil | ASTM B152, B465, EN 13599 | C11000, C26000, C26800, C71500, C70600, C51100 | Thickness: 0.1-6 mm; Width: 10-600 mm | Transformer windings, gaskets, spring contacts |
| Copper Rod & Bar | ASTM B151, B124, EN 12163, 12164 | C71500, C70600, C36000, C46400, C63000, C17200 | Diameter: 5-200 mm; Length: 1-6 m | Valve stems, pump shafts, fasteners, CNC blanks |
| Copper Plate & Sheet | ASTM B171, B402, EN 1652 | C71500, C70600, C46400, C63000, C17200, C10100 | Thickness: 3-100 mm; Width: up to 2000 mm | Tube sheets, baffle plates, flange faces, pressure vessels |
| CNC Machined Components | Custom drawing; Materials to ASTM/ASME | C71500, C70600, C36000, C63000, C17200, C10100, C18200 | Custom dimensions; Tolerance ±0.01 mm | Manifold valve blocks, pump housings, impellers, custom fittings |
