Hardness testing to ISO 6508-1
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Cupro Nickel 70/30 hex nuts are essential components in various industries, known for their exceptional corrosion resistance and durability. Composed of 70% copper and 30% nickel, this alloy offers a unique combination of mechanical properties, making it ideal for applications in marine environments, chemical processing, and more.
Corrosion Resistance: One of the standout features of Cupro Nickel 70/30 hex nuts is their superior corrosion resistance. This alloy can withstand the corrosive effects of saltwater, making it a popular choice for marine applications such as shipbuilding, offshore structures, and desalination plants. Its resistance to biofouling also makes it valuable in underwater equipment.
Durability: Cupro Nickel 70/30 hex nuts are built to last. Their high tensile strength and ductility ensure they can withstand the stresses and strains of various industrial operations. This durability translates to longer service life, reducing maintenance and replacement costs.
Heat Resistance: Cupro Nickel 70/30 maintains its mechanical properties in a wide temperature range, from sub-zero temperatures to high heat. This versatility makes it suitable for applications where temperature fluctuations are common, such as heat exchangers, condensers, and HVAC systems.
Anti-Fouling Properties: The anti-fouling properties of Cupro Nickel 70/30 are particularly beneficial in seawater environments. Its resistance to biofouling, which includes the growth of barnacles and other marine organisms on surfaces, minimizes the need for frequent cleaning and maintenance. This makes it an environmentally friendly choice, reducing the use of antifouling coatings.
Machinability: Cupro Nickel 70/30 is relatively easy to machine and fabricate, which simplifies the manufacturing process. Hex nuts made from this alloy can be precisely crafted to meet specific design requirements.
Specifications | ASTM B151 / ASME SB151 |
Size | Cold Forming process: M2-M24 Hot Forging process: M24-M100, 1-1/2” Dia, up to 1100mm lg CNC Machining for M100 / 4” Dia, up to 1500mm lg Manufacturing M2, M3, M3.5, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24, M27, M30, M33, M36, M42, M45, M48 to M160 and Custom Metric Cupro Nickel Hex Nuts |
Hex Nut Sizes Metric | Dia: M10 – M110 / Length: 12 – 1200MM |
Hex Nuts Size Inch | Dia: 1/2″ – 4.0″ / Length: 1/2″ – 52″ |
Length | 3 to 200 mm |
Types | Heavy Hex Nuts, Large Heavy Hex Nuts, Heavy Hex Jam Nut, Heavy Hex Coupling Nut, Heavy Duty Hex Nuts |
DIN Standard | DIN 934, DIN 982, DIN 985, DIN 936, DIN 929, DIN 1587, DIN 439, DIN 315 |
Dimensions | ASME B18.2.2 Heavy Hex Nuts, ASME B18.2.4.6M Metric Heavy Hex Nuts, ASME B18.16.6 / ASME B18.16.4 / ASME B18.2.2 |
Threads | METRIC, BSW, UNC, UNF, BSF or as required |
Hex Nuts Forming | Hot Forged Hex Nuts & Cold Forged Hex Nuts |
UTS – Unified Thread Standard | UNC, UNF, NPT, UNS, UNEF, NPTF |
Applications: Cupro Nickel 70/30 hex nuts are used in a wide range of applications, including but not limited to:
Marine Engineering: Shipbuilding, offshore platforms, and subsea equipment.
Chemical Processing: Piping systems and heat exchangers.
Power Generation: Condensers and heat transfer systems.
Desalination Plants: High-salinity water treatment equipment.
Petrochemical Industry: Pipelines and heat exchangers for processing corrosive fluids.
To preserve the high standards of our selection of industrial hex nuts, we have always adhered to a systematic quality management process.
Our staff of experts is vibrant and talented, and they have always been our largest supporters and contributors to our success. Our vision is to create a world of hex nuts.
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
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