Copper Alloy Fasteners are non-ferrous fastening components manufactured from copper and copper-based alloys such as copper-nickel, naval brass, silicon bronze and aluminium bronze. They are selected for applications requiring combinations of corrosion resistance, electrical or thermal conductivity, strength and marine-service performance. We supply copper alloy bolts, screws, nuts, studs, threaded rods, washers, U-bolts and Copper Alloy Hex Head Bolts in different grades, sizes, threads and configurations for industrial, marine, electrical and engineering applications.
Copper Alloy Fasteners Manufacturer, Supplier & Exporter
Copper Alloy Fasteners are used for specialized fastening applications where material performance is just as important as mechanical joint strength. Copper-based alloys can provide useful combinations of corrosion resistance, conductivity, thermal performance and mechanical strength, making them suitable for marine, electrical, heat-transfer, industrial and engineering applications.
We manufacture and supply Copper Alloy Fasteners in different configurations, including bolts, screws, nuts, studs, threaded rods, washers and U-bolts. Depending on the required service conditions, products can be supplied in copper-nickel, naval brass, silicon bronze, aluminium bronze and other suitable copper alloy grades.
As a Copper Alloy Fasteners Manufacturer, supplier and exporter, we support standard and customized requirements based on material grade, dimensions, thread configuration, quantity and technical specifications.
What Are Copper Alloy Fasteners?
Copper Alloy Fasteners are mechanical fastening components produced from copper-based alloys. Unlike conventional steel fasteners, they are non-ferrous and can be selected where specific electrical, thermal, corrosion or marine properties are required.
The term "copper alloy fasteners" covers a broad range of materials rather than one particular alloy. For example, UNS C70600 is a 90-10 copper-nickel alloy, C71500 is a 70-30 copper-nickel alloy, C46400 is naval brass, and C65500 is high-silicon bronze. Their properties differ according to composition and temper.
This makes correct grade selection important for the intended application.
Table of Contents
- ➤ Copper Alloy Fasteners Manufacturer, Supplier & Exporter
- ➤ What Are Copper Alloy Fasteners?
- ➤ Copper Alloy Fasteners Specifications
- ➤ Types of Copper Alloy Fasteners
- ➤ Copper Nickel Cupronickel Fasteners
- ➤ Marine Grade Copper Alloy Fasteners
- ➤ High Conductive Copper Bolts and Screws
- ➤ Chemical Composition of Copper Alloy Fasteners
- ➤ Mechanical Properties of Copper Alloy Fasteners
- ➤ Copper Alloy Fasteners Weight Chart
- ➤ Equivalent Grades of Copper Alloy Fasteners
- ➤ Copper Alloy Fasteners Manufacturing Process
- ➤ Applications of Copper Alloy Fasteners
- ➤ Standards for Copper Alloy Fasteners
- ➤ Why Choose Our Copper Alloy Fasteners?
- ➤ How to Select the Right Copper Alloy Fastener
Copper Alloy Fasteners Specifications
| Property | Typical Specification |
|---|---|
| Product | Copper Alloy Fasteners |
| Material | Copper and copper-based alloys |
| Common Grades | C70600, C71500, C46400, C65500, C95400 and others |
| Product Types | Bolts, screws, nuts, studs, washers, U-bolts, threaded rods |
| Bolt Type | Hex head, heavy hex, structural and customized |
| Screw Type | Machine screws, cap screws and customized screws |
| Thread | Metric, UNC, UNF, BSF and other requirements |
| Size Range | As per drawing, standard or customer requirement |
| Manufacturing | Forging, heading, machining, threading and other suitable processes |
| Supply Condition | As manufactured or specified temper |
| Surface | Natural/bright or as specified |
| Application | Marine, electrical, industrial, heat-transfer and engineering |
| Documentation | MTC, inspection reports and other documents as specified |
| Origin | India / as specified for export orders |
Types of Copper Alloy Fasteners
We supply copper-based fasteners in several configurations to suit different joint designs.
➤ Copper Alloy Hex Head Bolts
Copper Alloy Hex Head Bolts have a six-sided head designed for installation using a wrench or socket. They are commonly specified for equipment, structural and industrial assemblies where a copper alloy material is required.
➤ Copper Alloy Screws
Copper alloy screws are available for equipment, electrical, fabrication and specialized engineering assemblies. Machine screws, cap screws and customized designs can be supplied according to requirements.
➤ Copper Alloy Nuts
Nuts are used with matching bolts and studs to create removable threaded joints. Material selection should consider the bolt material, service environment and galvanic compatibility.
➤ Copper Alloy Stud Bolts
Stud bolts can be supplied for flanged and equipment connections where a threaded fastening arrangement is preferred.
➤ Copper Alloy Threaded Rods
Threaded rods are used for supports, fabrication, mounting and specialized fastening assemblies.
➤ Copper Alloy Washers
Washers distribute load under the fastener head or nut and can be supplied in matching or application-specific copper alloys.
➤ Copper Alloy U-Bolts
U-bolts are used to secure pipes, tubes and equipment supports. Dimensions can be customized according to pipe diameter and mounting requirements.
Copper Nickel Cupronickel Fasteners
Copper Nickel Cupronickel Fasteners are produced from copper-nickel alloys and are particularly relevant to marine and seawater-service applications.
Two widely recognized copper-nickel grades are:
- UNS C70600 – nominally 90% copper and 10% nickel
- UNS C71500 – nominally 70% copper and 30% nickel
C70600 and C71500 are established copper-nickel alloys with applications involving seawater, condensers, heat exchangers and marine systems. CDA lists ASTM F468 as an applicable specification for nonferrous bolts, hex cap screws and studs for general use for C71500.
For marine projects, the correct alloy should be selected according to seawater conditions, temperature, flow, mechanical requirements and the materials being joined.
Marine Grade Copper Alloy Fasteners
Marine Grade Copper Alloy Fasteners are used in environments where moisture, salt water and marine exposure create demanding corrosion conditions.
Copper-nickel alloys are particularly established in marine applications. CDA identifies C70600 and C71500 for applications including salt-water piping, condensers, heat exchangers, marine fittings and other seawater-service equipment.
Typical applications include:
- Shipbuilding
- Ship repair
- Offshore equipment
- Marine piping
- Seawater cooling systems
- Desalination plants
- Condensers
- Heat exchangers
- Coastal equipment
- Marine pumps and valves
A "marine grade" should not be selected only from the product name. The exact alloy, mating materials, temperature, seawater chemistry and mechanical loading should be considered.
High Conductive Copper Bolts and Screws
High Conductive Copper Bolts and Screws are used in applications where electrical conductivity is an important consideration.
Pure copper generally provides higher conductivity than many copper alloys, while alloying elements can improve strength, corrosion resistance or other characteristics at the expense of some conductivity. For example, CDA lists C46400 at approximately 26% IACS, C70600 at approximately 9% IACS and C71500 at approximately 4.6% IACS.
Potential applications include:
- Electrical assemblies
- Grounding-related components
- Electrical equipment
- Busbar-related fastening
- Marine electrical equipment
- Specialized industrial connections
The required conductivity, joint load, temperature and corrosion environment should be considered together when selecting the material.
Chemical Composition of Copper Alloy Fasteners
| UNS Grade | Alloy Type | Cu (%) | Ni (%) | Zn (%) | Fe (%) | Sn (%) | Mn (%) | Si (%) | Al (%) |
|---|---|---|---|---|---|---|---|---|---|
| C70600 | Copper-Nickel 90/10 | Balance | 9–11 | ≤1.0 | 1.0–1.8 | — | ≤1.0 | — | — |
| C71500 | Copper-Nickel 70/30 | Balance | 29–33 | ≤1.0 | 0.4–1.0 | — | ≤1.0 | — | — |
| C46400 | Naval Brass | 59–62 | — | Balance | ≤0.10 | 0.50–1.0 | — | — | — |
| C65500 | High-Silicon Bronze | Balance | ≤0.6 | ≤1.5 | ≤0.8 | — | 0.5–1.3 | 2.8–3.8 | — |
| C95400 | Aluminium Bronze | Balance | ≤1.5 | — | 3–5 | — | ≤0.50 | — | 10–11.5 |
Mechanical Properties of Copper Alloy Fasteners
| Grade | Condition / Form | Tensile Strength, Typical | Yield Strength, Typical | Elongation, Typical |
|---|---|---|---|---|
| C70600 | Bar, hard H04 | 50 ksi / 345 MPa | 25 ksi / 172 MPa | 15% |
| C70600 | Flat product, 1/4 hard H01 | 53 ksi / 365 MPa | 16 ksi / 110 MPa | 35% |
| C71500 | Flat product, hot rolled M20 | 55 ksi / 379 MPa | 45 ksi / 310 MPa | 35% |
| C71500 | Rod, 1/2 hard H02 | 75 ksi / 517 MPa | — | 15% |
| C46400 | Flat product, 1/4 hard H01 | 70 ksi / 483 MPa | 17 ksi / 117 MPa* | 75%* |
| C95400 | As-cast | 85 ksi / 586 MPa | 35 ksi / 241 MPa | 18% |
| C95400 | Heat treated | 105 ksi / 724 MPa | 54 ksi / 372 MPa | 8% |
Copper Alloy Fasteners Weight Chart
| Nominal Diameter | Approx. Weight per Metre at 8.9 g/cm³ |
|---|---|
| M6 | 0.251 kg/m |
| M8 | 0.447 kg/m |
| M10 | 0.699 kg/m |
| M12 | 1.006 kg/m |
| M14 | 1.369 kg/m |
| M16 | 1.789 kg/m |
| M18 | 2.264 kg/m |
| M20 | 2.796 kg/m |
| M22 | 3.385 kg/m |
| M24 | 4.022 kg/m |
| M27 | 5.104 kg/m |
| M30 | 6.290 kg/m |
| M33 | 7.611 kg/m |
| M36 | 8.994 kg/m |
| M39 | 10.548 kg/m |
| M42 | 12.333 kg/m |
| M45 | 14.181 kg/m |
| M48 | 16.103 kg/m |
Equivalent Grades of Copper Alloy Fasteners
| UNS Grade | Common Alloy Designation | Common European / International Reference |
|---|---|---|
| C70600 | 90-10 Copper-Nickel | CuNi10Fe1Mn / CW352H |
| C71500 | 70-30 Copper-Nickel | CuNi30Fe1Mn / CW354H |
| C46400 | Naval Brass | CuZn40Sn / CW712R* |
| C65500 | High-Silicon Bronze A | CuSi3 / related EN designation* |
| C95400 | Aluminium Bronze | CuAl10Fe / related EN designation* |
Copper Alloy Fasteners Manufacturing Process
Applications of Copper Alloy Fasteners
Copper alloy fastening products are used in industries where a combination of non-ferrous construction, corrosion resistance, conductivity or marine performance is required.
Common applications include:
- Marine engineering
- Shipbuilding
- Offshore platforms
- Seawater piping
- Heat exchangers
- Condensers
- Desalination equipment
- Electrical equipment
- Power systems
- Industrial piping
- Chemical equipment
- HVAC systems
- Coastal infrastructure
- General engineering
CDA's alloy database identifies marine, condenser, heat-exchanger, seawater and industrial applications for copper-nickel grades such as C70600 and C71500.
Standards for Copper Alloy Fasteners
The applicable standard depends on the fastener type and material grade.
For non-ferrous fasteners, ASTM F468 covers nonferrous bolts, hex cap screws and studs for general use, while ASTM F467 covers nonferrous nuts for general use. CDA lists these specifications in its applicable standards for copper-nickel alloys.
Other material specifications may apply to copper alloy rod, bar, forgings, plate, tube or other product forms. The material standard should therefore be selected according to the actual product and alloy.
Why Choose Our Copper Alloy Fasteners?
We supply copper alloy fastening products for customers requiring specific material, dimensional and application requirements.
Our supply range includes:
- Copper alloy bolts
- Copper alloy screws
- Copper alloy nuts
- Copper alloy studs
- Copper alloy threaded rods
- Copper alloy washers
- Copper alloy U-bolts
- Copper Alloy Hex Head Bolts
- Copper-nickel fasteners
- Marine-grade fastening products
- Customized fasteners
As a Copper Alloy Fasteners Manufacturer, supplier and exporter, we can support requirements involving different grades, sizes, threads, quantities and documentation.
Customers looking for a Marine Grade Copper Nickel Bolts Stockist can provide the required UNS grade, size, length and quantity so that the appropriate product can be evaluated.
How to Select the Right Copper Alloy Fastener
Selecting the correct fastener requires more than choosing a copper-based material. Consider:
- Alloy grade – such as C70600, C71500, C46400 or another specified grade.
- Service environment – marine, electrical, industrial, atmospheric or chemical.
- Mechanical load – tensile, shear, preload and fatigue requirements.
- Electrical requirements – especially where conductivity is important.
- Temperature – operating and design temperatures.
- Mating materials – to assess galvanic compatibility.
- Thread configuration – metric, UNC, UNF or other requirements.
- Dimensions – diameter, length, head style and thread length.
- Applicable specification – fastener and material standards should be confirmed.
- Documentation – MTC, inspection reports and other quality documents where required.
Get a Quote for Copper Alloy Fasteners
Looking for Copper Alloy Fasteners, Copper Nickel Cupronickel Fasteners, marine-grade bolts or High Conductive Copper Bolts and Screws?
Share the required grade, fastener type, diameter, length, thread, quantity and applicable specification with us.
We supply copper alloy bolts, screws, nuts, studs, washers, U-bolts and customized fastening products for marine, electrical, industrial and engineering applications.
Contact us for technical specifications, availability, pricing and bulk export requirements.
