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UNS C70600 / UNS C71500 Threaded Bars Overview
Aurum Overseas is a leading UNS C70600 Threaded Bars Supplier & Exporter and UNS C71500 Threaded Bars Supplier & Exporter, stocking marine-grade copper-nickel alloy fasteners to ASTM B151 and ASME SB151 specifications. Engineered for harsh seawater exposure, these studs offer exceptional immunity to biofouling, barnacle attachment, and crevice corrosion.
Our inventory features certified Copper Nickel 90/10 Threaded Rods and Copper Nickel 70/30 Threaded Rods to meet varied pressure and velocity demands. The 70/30 cupro-nickel studs are enriched with 29–33% Nickel for higher flow velocity resistance and elevated strength in naval hulls and marine heat exchangers.
Built for submarine piping systems, offshore intake pumps, and desalination plants, our all-thread rods ensure leak-free joint integrity. Contact Aurum Overseas for direct factory quotes, custom cut-to-length studs, and rapid global delivery.
Technical Specifications
| Technical Parameter | Specification Standard |
|---|---|
| Material Specifications | ASTM B151, ASME SB151, MIL-C-15726, EN 10204 3.1 |
| Grade Options | Copper Nickel 90/10 (UNS C70600) / Copper Nickel 70/30 (UNS C71500) |
| Thread Size Range | M6 to M64 (1/4" to 2.5" Nominal Diameter) |
| Thread Profiles | UNC, UNF, UNEF, Metric Coarse, Metric Fine, Rolled Threads |
| Length Options | 1,000 mm, 2,000 mm, 3,000 mm, Custom Cut-to-Length All-Thread Studs |
| Thermal Operating Limit | Up to 300 °C (572 °F) |
| HSN Code | 74153390 |
Chemical Composition & Mechanical Properties
Equivalent Grades
| Standard Alloy | Werkstoff Nr. | UNS Designation |
|---|---|---|
| Copper Nickel 90/10 | 2.0872 | C70600 |
| Copper Nickel 70/30 | 2.0882 | C71500 |
Chemical Composition (%)
| Grade | Cu-Ni 90-10 (C70600) | Cu-Ni 70-30 (C71500) |
|---|---|---|
| Copper (Cu) | 88.6 min | 65.0 min |
| Nickel (Ni) | 9.0 – 11.0 max | 29.0 – 33.0 |
| Iron (Fe) | 1.8 max | 0.4 – 1.0 |
| Manganese (Mn) | 1.0 max | 1.0 max |
| Lead (Pb) | 0.05 max | 0.05 max |
| Zinc (Zn) | 1.0 max | 1.0 max |
Mechanical & Physical Properties
| Property Parameter | Cu-Ni 90-10 (UNS C70600) | Cu-Ni 70-30 (UNS C71500) |
|---|---|---|
| Density | 8.94 g/cm³ (0.323lb/in³) | 8.94 g/cm³ (0.323lb/in³) |
| Melting Point | 1238 °C (2260 °F) | 1238 °C (2260 °F) |
| Tensile Strength | 50,000 psi (345 MPa) min | 50,000 psi (345 MPa) min |
| Yield Strength (0.2% Offset) | 20,000 psi (140 MPa) min | 20,000 psi (140 MPa) min |
| Elongation | 30% min | 30% min |
Key Advantages of Cupro Nickel Threaded Rods
Natural Biofouling Protection
Continuous copper release prevents barnacle, algae, and marine organism growth without extra anti-fouling coatings.
High Flow Water Erosion Defense (70/30 C71500)
Higher 29–33% Nickel content protects threads against turbulent seawater erosion and high-velocity wear.
Chloride Crack Immunity
Superior to standard stainless steel in warm ocean water, completely avoiding chloride-induced stress corrosion cracking.
Impact Shock Absorption
High 30% ductility lets studs absorb heavy mechanical vibrations, wave action, and structural pressure without breaking.
Quality Testing & Inspection
Aurum Overseas subjects every lot of copper-nickel threaded fasteners to strict quality checks before dispatch:
- Material Composition (PMI): Optical Emission Spectrometry verifying exact Nickel, Copper, Iron, and Manganese ratios per UNS C70600 and C71500 standards.
- Mechanical Strength Verification: Tensile, yield, and elongation testing to guarantee ASTM B151 minimum load compliance.
- Precision Thread Inspection: Go/No-Go gage and pitch micrometer checks ensuring smooth class 2A/3A or 6g fit tolerances.
- MTR Certification: Delivered with complete EN 10204 3.1 Material Test Reports certifying melt heat analysis and physical property test results.
Global Export Markets
As an established UNS C70600 Threaded Bars Supplier and UNS C71500 Threaded Bars Exporter, Aurum Overseas supplies fully certified Copper Nickel 90/10 and 70/30 threaded rods to global marine, offshore, naval, and desalination facilities:
USA
Canada
Mexico
Germany
United Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
C70600 (90/10) offers optimal biofouling resistance and cost efficiency for general seawater piping, while C71500 (70/30) contains more nickel for enhanced resistance to high-velocity water erosion and higher pressure.
Yes. As an established UNS C70600 Threaded Bars Exporter, we supply naval and offshore projects across the UAE, Saudi Arabia, Qatar, Oman, Kuwait, and Bahrain.
Yes. As a leading UNS C71500 Threaded Bars Supplier, we export certified cupro-nickel fasteners to shipbuilding and desalination clients across the USA, Canada, Germany, the UK, and Europe.
Contact Aurum Overseas
Contact Aurum Overseas, a premier UNS C70600 Threaded Bars Supplier and UNS C71500 Threaded Bars Exporter, for certified Copper Nickel 90/10 and 70/30 threaded rods, cut studs, and fast worldwide delivery.