Hardness testing to ISO 6508-1
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Cupro-Nickel 70/30 Fasteners are hardware components made from an alloy known as Copper-Nickel 70/30, also known as C71500. This alloy is a combination of 70% copper and 30% nickel, with trace amounts of iron and manganese. The chemical composition of Cupro-Nickel 70/30 provides a unique set of properties that make it suitable for various engineering applications.
One of the key features of Cupro-Nickel 70/30 Fasteners is its excellent resistance to seawater corrosion and biofouling. This alloy is widely used in marine environments, particularly in applications where corrosion resistance is crucial. Cupro-Nickel 70/30 Fasteners exhibit superior resistance to marine organisms, chloride-induced corrosion, and erosion, making them ideal for applications in shipbuilding, offshore platforms, and seawater-cooled systems.
Another significant feature of Cupro-Nickel 70/30 Fasteners is their exceptional strength and ductility. This alloy possesses a good balance of mechanical properties, making it easy to work with during fabrication processes such as forming, machining, and welding. Its high strength allows Cupro-Nickel 70/30 Fasteners to withstand mechanical stresses and loads encountered in various marine and industrial applications.
Corrosion resistance is one of the most important qualities of Cupro-Nickel 70/30 Fasteners. The alloy develops a protective oxide layer in seawater, enhancing its resistance to corrosion and minimizing the risk of galvanic corrosion when coupled with other metals. This makes it an excellent choice for fastening critical components in marine environments, such as propellers, heat exchangers, and condensers.
Specifications | ASTM B151, ASME SB151 |
Standard | DIN, ASTM, BS and all International Standards |
Size | M3 to M90 |
Length | 10mm to 1000mm |
Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
Form | Hex, Threading, Square, Round as per Gauge Etc. |
Head | Hex, Square, Round, Hex flange, Flat, T-head & Triangular etc. |
Neck type | Hex, Square, Triangular, Oval & Knurled etc. |
Surface Coating | Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request |
Manufacturing Process | Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing. |
Cupro-Nickel 70/30 Fasteners are widely used in marine construction and naval applications due to their outstanding resistance to seawater corrosion and biofouling. They are employed in fastening components exposed to harsh marine environments, including ship hulls, heat exchangers, and underwater equipment. Additionally, they are used in offshore oil and gas platforms, desalination plants, and seawater-cooled power generation facilities. Their combination of corrosion resistance, strength, and ductility makes them well-suited for critical fastening purposes in marine and industrial settings.
To preserve the high standards of our selection of industrial fasteners, we have always adhered to a systematic quality management process.
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STANDARD | WERKSTOFF NR. | UNS |
---|---|---|
Copper Nickel 70/30 | 2.0882 | C71500 |
Grade | Cu | Mn | Pb | Ni | Fe | Zn |
---|---|---|---|---|---|---|
Cu-Ni 70-30 | 65.0 min | 1 max | .05 max | 29-33 | 0.4-1.0 | 1 max |
Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
---|---|---|---|---|---|
Copper Nickel 70-30 | 0.323 lb/in3 at 68 F | 2260 F | 50000 psi | 20000 psi | 30 % |
Hardness testing to ISO 6508-1
Nut proof load testing to ISO 898-2
Suitability for preloading to EN 14399-2
Calibrated gauges and tools
Copper Nickel 70/30 Bolts | Cupro Nickel 70/30 Hex Bolt |
Copper Nickel 70/30 Hex Bolt | 70/30 Copper Nickel Fasteners |
UNS C71500 Copper Nickel 70/30 Stud Bolts | Din 2.0882 Copper Nickel Threaded Rod |
Copper Nickel 70/30 Spring Washer | Cu Ni 70/30 Fasteners |
Copper Nickel 70/30 Fasteners | Cupro Nickel (Cu-Ni) 70/30 Fasteners |
Cu-Ni UNS C71500 70/30 Spring Washers | ASTM B151 70/30 Cupro Nickel Hex Bolt |