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Copper Alloys C71500 | Product Overview
Introduction To Copper Alloys C71500
MOKSH TUBES & FITTINGS LLP is a leading manufacturer, supplier, stockist, and exporter of Copper Nickel 70/30 (C71500) products. This alloy contains 70% copper and 30% nickel with added iron and manganese for enhanced strength and corrosion resistance. It is especially renowned for its superior resistance to seawater corrosion, biofouling, and stress corrosion cracking, making it a preferred material for marine, offshore, and heat exchanger applications.
Copper Alloys C71500, offers excellent mechanical properties, thermal stability, and weldability. It is non-magnetic and retains its strength and corrosion resistance even at elevated temperatures and high-pressure environments.
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Technical Specifications – Copper Nickel C71500 (Cu-Ni 70/30)
| Category | Details |
|---|---|
| Material | Copper Nickel 70/30 |
| UNS No. | C71500 |
| EN Equivalent | CW354H |
| ISO Designation | CuNi30Fe1Mn |
| Copper Content | ≥ 69 % |
| Nickel Content | 29 – 33 % |
| Iron Content | 0.4 – 1.0 % |
| Manganese | 0.4 – 1.0 % |
| Magnetic Properties | Non-Magnetic |
| Heat Treatable | ❌ No |
| Strength Control | Cold Working |
| Seawater Resistance | Excellent |
| Erosion / Cavitation | Very Good |
| Typical Service | Marine, Offshore, Heat Exchangers |
Chemical Composition – UNS C71500
| Element | Content (%) |
|---|---|
| Copper (Cu) | 69.0 min |
| Nickel (Ni) | 29.0 – 33.0 |
| Iron (Fe) | 0.4 – 1.0 |
| Manganese (Mn) | 0.4 – 1.0 |
| Zinc (Zn) | 1.0 max |
| Lead (Pb) | 0.05 max |
| Others | 0.50 max (total) |
Mechanical Properties – Copper Nickel C71500
| Condition | Tensile Strength | Yield Strength (0.2%) | Elongation (%) | Hardness |
|---|---|---|---|---|
| Annealed (Soft) | 52–66 ksi / 360–455 MPa | 18–25 ksi / 125–170 MPa | 30–45% | 80–120 HB |
| Cold-Worked / Hard | 70–85 ksi / 485–586 MPa | 35–50 ksi / 240–345 MPa | 10–20% | 120–160 HB |
| Tube (ASTM B466) | ≥ 52 ksi / ≥ 360 MPa | ≥ 18 ksi / ≥ 125 MPa | ≥ 30% | ~88 HRB |
| Sheet / Plate (ASTM B122) | 54–75 ksi / 372–517 MPa | 18–43 ksi / 125–300 MPa | 30–45% | 90–130 HB |
Uses and Advantages
Exceptional resistance to seawater corrosion and biofouling
High mechanical strength and toughness
Excellent weldability and formability
Non-magnetic and spark-resistant
Thermal and electrical stability
Applications of Copper Alloys C71500
Copper Alloys C71500 is extensively used in:
Chemical Processing
Oil & Gas
Marine
Pharmaceutical
Heat Exchangers
Power Plants
WHY CHOOSE US?
FAQ's
What is Copper Nickel 70/30 (C71500) and why is it widely used?
Copper Nickel 70/30, also known as C71500, is an alloy made of 70% copper and 30% nickel with small additions of iron and manganese for added strength. It is highly valued for its exceptional resistance to seawater corrosion, biofouling, and stress corrosion cracking, making it ideal for marine, offshore, and heat exchanger applications.
What are the key benefits of Copper Nickel 70/30 (C71500)?
C71500 offers several performance advantages:
- Outstanding seawater corrosion resistance.
- High mechanical strength and toughness.
- Non-magnetic and spark-resistant properties.
- Excellent weldability, machinability, and formability.
- Thermal and electrical stability under high pressure and elevated temperatures.
What are the common applications of Copper Nickel C71500?
C71500 is widely used in:
- Marine engineering seawater piping, condensers, saltwater flanges, ship hulls, offshore platforms.
- Power plants heat exchangers, evaporators, condensers.
- Desalination plants brine heaters, flash chambers, high-pressure piping.
- Chemical processing acid-resistant piping and vessels.
- Oil & Gas hydraulic lines, firewater systems, instrumentation tubing.
- Naval & Defense submarine components, seawater coolers, anti-fouling systems.
What types of Copper Nickel 70/30 (C71500) products does MOKSH TUBES & FITTINGS LLP supply?
We offer a full range of C71500 Copper Nickel products, including:
- Seamless & Welded Pipes.
- Tubes (U-bend, boiler, heat exchanger).
- Sheets, Plates, Coils & Strips.
- Round Bars, Hex Bars, Square Bars.
- Pipe Fittings (elbows, tees, reducers, caps, stub ends).
- Flanges (weld neck, slip on, blind, threaded, socket weld).
- Fasteners (bolts, nuts, washers, studs).
- Custom-fabricated components.
Why choose MOKSH TUBES & FITTINGS LLP for Copper Nickel 70/30 (C71500)?
MOKSH TUBES & FITTINGS LLP is a leading manufacturer, supplier, and exporter of Copper Nickel 70/30 with:
- In house manufacturing and a wide product range.
- Fast delivery & customized supply for project needs.
- Stringent quality control and third party inspection (TPI available).
- Export ready packaging and worldwide delivery.
- Trusted supplier for marine, power, desalination, oil & gas, and defense industries.
Contact Us
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