Products
Min Temp
Max Temp
🌡
⚡
🛡
⚖
| Specification | Value |
|---|---|
| UNS Number | C70600 |
| Composition | 90% Cu, 10% Ni, 1.4-1.7% Fe, 1% Mn |
| Tensile Strength | 310-345 MPa |
| Density | 8.94 g/cm³ |
| Max Service Temperature | 300°C |
| Corrosion Rating | Excellent in seawater |
| Element | Composition (%) |
|---|---|
| Cu | bal |
| Ni | 9.0–11.0 |
| Fe | 1.0–2.0 |
| Mn | 0.5–1.0 |
| Pb | ≤0.05 |
| Zn | ≤1.0 |
| C | ≤0.05 |
Cupro Nickel 90/10 fasteners derive their distinctive properties from a controlled alloy composition of 90% copper and 10% nickel, with small additions of iron and manganese. The nickel content enhances corrosion resistance and mechanical strength, while iron improves resistance to erosion and impingement attack in flowing seawater. Manganese contributes to deoxidation and improves hot working characteristics. This balanced composition gives the alloy its characteristic reddish-brown appearance along with a stable, single-phase microstructure that resists dezincification and stress corrosion cracking commonly seen in brass alloys.
These alloying elements combine to deliver outstanding resistance to marine corrosion, biofouling and cavitation, making Cupro Nickel 90/10 fasteners the preferred choice for offshore, shipbuilding and desalination applications. The alloy maintains good mechanical performance and ductility across a wide temperature range, while remaining weldable and easy to fabricate. Its excellent thermal conductivity and resistance to saltwater degradation ensure long-term reliability in critical fastening applications exposed to harsh marine environments.
Specifications
Cupro Nickel 90/10 Fasteners are specified by balanced mechanical properties, corrosion-resistant performance, and precise dimensional requirements suited for marine and industrial service. Their technical data typically covers strength, hardness, and size tolerances, making these fasteners defined by reliable mechanical characteristics and consistent dimensional specifications.
| Property | Value |
|---|---|
| Tensile Strength | 310-345 MPa |
| Yield Strength | 105-140 MPa |
| Elongation | 30-40% |
| Hardness | 65-85 HRB |
| Modulus of Elasticity | 135-150 GPa |
| Thermal Conductivity | 45 W/m·K |
| Density | 8.94 g/cm³ |
| Melting Range | 1100-1145°C |
| Max Service Temperature | 300°C |
| Standard | Details |
|---|---|
| Bolt Standard | ASME B18.2.1, DIN 931/933 |
| Stud Bolt Standard | ASME B16.5, MSS SP-75 |
| Nut Standard | ASME B18.2.2, DIN 934 |
| Washer Standard | ASME B18.22.1, DIN 125 |
| Thread Form | UNC, UNF, Metric Coarse/Fine |
| Diameter Range | M6 to M64 / 1/4" to 2.5" |
| Length Range | 10mm to 500mm |
| Available Forms | Bolts, Studs, Nuts, Washers, Screws |
| Inspection Standards | ASTM, EN 10204 3.1 |
Applications
