Copper / Brass / Bronze Hex Bars Manufacturer, Supplier & Exporter – Inox Steel India
Grades: CuNi 90/10, CuZn (Brass)
Inox Steel India is a manufacturer, supplier, and exporter of copper, brass, and bronze hex bars, supplying to marine, electrical, engineering, and industrial sectors across India, GCC countries, the Middle East, Africa, Europe, and the Americas.
Copper-based hex bars are supplied in CuNi 90/10 (Copper–Nickel alloy) and CuZn (Brass alloy) grades, manufactured in accordance with ASTM and EN standards. These materials are selected for applications requiring corrosion resistance, electrical and thermal conductivity, and good machinability.
With controlled processing and dimensional accuracy, copper, brass, and bronze hex bars supplied by Inox Steel India provide uniform across-flat dimensions, stable mechanical properties, and suitability for precision machining and fabrication.
Copper, brass, and bronze hex bars are solid long products with a hexagonal (six-sided) cross section, manufactured from copper-based alloys. The hexagonal profile allows positive spanner grip and ease of assembly, making these bars suitable for fasteners, fittings, and machined components.
Copper alloy hex bars are produced from billets using hot rolling or cold drawing (bright bar processing), followed by annealing to achieve the required ductility, machinability, and surface finish.
Manufacturing Steps:
1️⃣ Billet Selection & Heating
Copper alloy billets of CuNi 90/10 or CuZn grade are selected and heated under controlled conditions.
2️⃣ Hot Rolling / Hexagonal Shaping
Billets are rolled through hexagonal passes to achieve the required across-flat dimensions.
3️⃣ Cold Drawing (Where Required)
Bars may be cold drawn to improve surface finish and dimensional tolerance.
4️⃣ Annealing
Bars are annealed to restore ductility and improve machinability.
5️⃣ Straightening & Cutting
Bars are straightened and cut to standard or custom lengths.
6️⃣ Final Inspection
Chemical composition, mechanical properties, and dimensional checks are performed before dispatch.
These properties make copper-based hex bars suitable for marine, electrical, and industrial applications.
🧩 Grades & Standards Available
Copper / brass / bronze hex bars are supplied in the following grades:
Materials are supplied as per ASTM B466 / B467 (CuNi) and ASTM B16 / EN 12164 (Brass) specifications.
MASTER TECHNICAL DATA SHEET:
Copper / Brass / Bronze Hex Bars
| Parameter | CuNi 90/10 (Copper–Nickel Alloy) | CuZn (Brass Alloy) |
|---|---|---|
| Product Form | Hexagonal Bars (Solid) | Hexagonal Bars (Solid) |
| Standard | ASTM B466 / B467 | ASTM B16 / EN 12164 |
| Material Type | Copper–Nickel Alloy | Copper–Zinc Alloy (Brass) |
| Manufacturing Process | Hot Rolled / Cold Drawn (Bright) | Hot Rolled / Cold Drawn (Bright) |
| Surface Finish | Mill / Bright / Polished | Mill / Bright / Polished |
| Supply Condition | Annealed | Annealed |
| Copper (Cu) % | Balance (≈ 88–90) | Balance (≈ 60–65) |
| Nickel (Ni) % | 9.0 – 11.0 | — |
| Zinc (Zn) % | — | Balance (≈ 35–40) |
| Iron (Fe) % | ≤1.0 | ≤0.05 |
| Manganese (Mn) % | ≤1.0 | ≤0.05 |
| Tensile Strength (MPa) | 360 – 480 | 350 – 550 |
| Yield Strength (MPa) | ≥105 | ≥150 |
| Elongation (%) | ≥30 | ≥25 |
| Hardness | 80 – 110 HB | 80 – 150 HB |
| Corrosion Resistance | Excellent (Seawater) | Good (Atmospheric) |
| Thermal Conductivity | Moderate | High |
| Electrical Conductivity | Moderate | Good |
| Machinability | Good | Excellent |
| Weldability | Excellent | Good |
| Standard AF Sizes (mm) | 8 – 60 | 8 – 60 |
| Approx. Weight @12 mm AF | 0.98 kg/m | 0.98 kg/m |
| Approx. Weight @20 mm AF | 2.72 kg/m | 2.72 kg/m |
| Approx. Weight @30 mm AF | 6.11 kg/m | 6.11 kg/m |
| Standard Length | 3 m / 6 m | 3 m / 6 m |
| Custom Cut Length | Available | Available |
| Dimensional Tolerance | As per ASTM | As per ASTM / EN |
| Testing | Chemical, Mechanical | Chemical, Mechanical |
| Certification | EN 10204 3.1 | EN 10204 3.1 |
| HSN / HS Code | 7407 | 7407 |
| Typical Applications | Marine, Condensers | Electrical, Fasteners |
| Packaging | Bundled / Wooden Crates | Bundled / Wooden Crates |
When selecting copper-based hex bars, the following parameters should be evaluated:
1️⃣ Corrosion Environment (Marine / Atmospheric)
2️⃣ Electrical or Thermal Conductivity Requirement
3️⃣ Machinability and Surface Finish
4️⃣ Dimensional Tolerance
5️⃣ Compliance with Industry Standards
Correct grade selection ensures reliable performance and service life.
🌍 Usage & Demand Overview
In India, copper, brass, and bronze hex bars are widely used by marine equipment manufacturers, electrical component producers, plumbing and fitting manufacturers, and machining workshops, particularly in industrial regions such as Mumbai, Jamnagar, Ahmedabad, and Chennai.
Export demand is driven by marine hardware, condenser components, electrical fittings, and precision-engineered parts requiring ASTM and EN-compliant copper alloy materials.
⚙ Applications and Technical Specifications by Grade
Copper-, brass-, and bronze-based hex bars supplied by Inox Steel India are used where corrosion resistance, conductivity, and machinability are required. Grade selection depends on service environment, conductivity needs, and fabrication method.
CuNi 90/10 (Copper–Nickel) Hex Bars
Service Use: Marine and seawater-exposed environments.
Typical Applications: Marine fasteners, condenser components, heat exchanger parts, offshore fittings.
Industry Sectors: Marine | Offshore | Power | Desalination
CuZn (Brass) Hex Bars
Service Use: General engineering and electrical applications.
Typical Applications: Electrical connectors, plumbing fittings, fasteners, machined components.
Industry Sectors: Electrical | Plumbing | Engineering | General Fabrication
Copper alloy hex bars are supplied in standard metric hex bar sizes as per applicable ASTM / EN tolerances.
(Refer to standard hex bar sizes in mm PDF and hex bar size chart in mm India for detailed dimensions and weights.)
| AF Size (mm) | Approx. Weight (kg/m) |
|---|---|
| 8 | 0.43 |
| 10 | 0.68 |
| 12 | 0.98 |
| 16 | 1.74 |
| 20 | 2.72 |
| 25 | 4.25 |
| 30 | 6.11 |
| 40 | 10.86 |
| 50 | 16.90 |
| 60 | 24.60 |
Weights are indicative and may vary based on tolerance and alloy composition.
💰 Copper / Brass / Bronze Hex Bars Price (Indicative – India)
| Grade | Approx. Price Range (INR / kg) |
|---|---|
| CuNi 90/10 | ₹ 850 – ₹ 1,250 |
| CuZn (Brass) | ₹ 450 – ₹ 750 |
Prices depend on size, alloy composition, finish (mill / bright / polished), quantity, and prevailing market conditions.
HSN Code: 7407
Applicable for copper and copper-alloy bars and rods under Indian and international trade classification.
🧪 Testing & Quality Inspection
Copper alloy hex bars are inspected and tested to ensure compliance with applicable standards.
Testing includes:
Material can be supplied with EN 10204 3.1 certification on request.
Standard across-flat sizes range from 8 mm to 60 mm. Other sizes can be supplied on request. Yes. CuNi 90/10 offers excellent seawater corrosion resistance, while brass provides good atmospheric corrosion resistance. The applicable HSN code is 7407. Yes, custom cut lengths are available as per requirement. Material can be supplied with EN 10204 3.1 test certification on request. What are the standard hex bar sizes in mm?
Are copper alloy hex bars corrosion resistant?
What is the HSN code for copper / brass / bronze hex bars?
Q5. Are custom cut lengths available?
Is test certification provided with supply?
Inox Steel India supplies copper, brass, and bronze hex bars with controlled alloy composition, dimensional accuracy, and documented traceability. Material is processed and inspected to meet requirements for marine, electrical, and general engineering applications.
Key supply features:
🧩 Industries Served
Copper, brass, and bronze hex bars are supplied to the following industries:
Grade selection is aligned with corrosion exposure, conductivity requirements, and machining practices.
📦 Packaging & Supply
Copper alloy hex bars are packed and dispatched as per standard industrial and export practices.
Dispatch supported through JNPT (Mumbai), Mundra, and Hazira ports for export shipments.