Gunmetal Round Bar
Gunmetal Round Bar is a specialized alloy bar widely utilized in industrial manufacturing and engineering applications. Known for its excellent resistance to corrosion and wear, this material combines copper, tin, and zinc, delivering superior mechanical strength and durability. Its round cross-section makes it ideal for machining into precision components required in various heavy-duty environments.
The alloy’s high tensile strength and good machinability allow it to be formed into shafts, bushings, valves, and gears that perform reliably under stress and in marine or chemical exposure conditions. Its dimensional stability and resistance to dezincification make it a preferred choice for critical applications in pump manufacturing and hydraulic systems, where longevity and performance are paramount.
Manufactured to stringent industry standards, the bars are available in multiple diameters and lengths, ensuring compatibility with diverse production requirements. The smooth surface finish and consistent alloy composition facilitate seamless integration into automated machining processes, reducing downtime and enhancing productivity for industrial fabricators and OEMs.
Export readiness is assured through compliance with international quality certifications and proper packaging to prevent damage during transit. Suppliers typically offer customization options, including heat treatment and precision cutting services, to meet the specific needs of global clients. This makes the product a reliable solution for international markets demanding high-quality metal components.
In summary, this alloy bar serves as a robust foundation for manufacturing critical parts in sectors such as automotive, marine, and heavy machinery. Its blend of corrosion resistance, mechanical integrity, and ease of fabrication positions it as a valuable resource for industrial buyers seeking dependable raw materials for complex engineering projects.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Gunmetal Round Bar Are Preferred by Global Buyers
- ✔ Factory Pricing: Direct manufacturer rates with bulk stock
- ✔ Certified Quality: ISO & 3rd-party tested, EN 10204 certified
- ✔ Export-Ready: Sea-worthy packaging for on-time delivery
- ✔ Fast RFQs: Quick quotes for custom sizes & quantities
- ✔ Traceability: 100% heat number tracking from raw material to finished product
Trusted by industries like oil & gas, petrochemicals, power, marine, and heavy engineering.
- Manufacturing Capacity: 500 MT / Month
- Export Experience: 15+ Years
- Countries Served: 50+
- Annual Export Volume: 5,500 MT
Table of Contents
- 1. What is Gunmetal Round Bar
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Gunmetal Round Bar
- 4. Why Global Buyers Source from Ragnar Metals and Tubes
- 5. Features
- 6. Technical Overview
- 7. Specifications
- 8. Available Grades
- 9. Available Sizes
- 10. Chemical Properties
- 11. Mechanical Properties
- 12. Physical & Thermal Properties
- 13. Electrical Resistivity
- 14. Equivalent Grades
- 15. Manufacturing Process & Heat Treatment
- 16. Various Types
- 17. Applications & Uses
- 18. Industries We Serve
- 19. Latest Price List
- 20. MOQ & Payment Terms
- 21. Export Packaging & Shipping
- 22. Cities We Supply in India
- 23. Countries We Export Worldwide
- 24. Our Certifications
- 25. Quality Inspection & Testing
- 26. Our Other Product Types
- 27. People Also Search For
- 28. Frequently Asked Questions
- 29. About Ragnar Metals and Tubes
How to Choose the Right Gunmetal Round Bar
India is home to hundreds of manufacturers ranging from small job shops to large ISO-certified exporters. International and domestic buyers typically evaluate manufacturers based on quality compliance, production capacity, export experience, and pricing transparency.
- Certification & international standards (ASME, ASTM, EN)
- Manufacturing capability vs trading activity
- Export documentation & inspection support
- Stock availability & lead time reliability
- Past supply experience in oil & gas, EPC & heavy industries
Comparison Factors Among Gunmetal Round Bar
| Evaluation Factor | Small Local Suppliers | Trading Companies | ISO-Certified Manufacturers |
|---|---|---|---|
| Manufacturing Control | Limited | None | Full in-house / audited partners |
| International Standards | Basic | Depends on source | ASME / ASTM / EN |
| Inspection & MTCs | Limited | Inconsistent | EN 10204 3.1 / 3.2 |
| Export Experience | Low | Medium | 50+ countries |
| Risk for EPC Projects | High | Medium | Low |
International buyers typically prefer ISO-certified manufacturers for large-scale or critical applications due to better quality control, documentation, and lower project risk.
Why Global Buyers Choose Ragnar Metals and Tubes
Ragnar Metals and Tubes is a trusted ISO 9001:2015 certified manufacturer and global exporter of ferro alloys and metal products, supplying consistent, high-quality materials to customers across USA, UK, Europe, Middle East, Africa, and Asia-Pacific. Our focus on quality assurance, cost efficiency, and on-time delivery makes us a preferred sourcing partner for international buyers.
| Key Advantage | Buyer Benefit |
|---|---|
| ISO 9001:2015 Certified Manufacturing | Consistent quality with documented QA systems and process control |
| ASME / ASTM / EN Compliant Products | Globally accepted standards with EN 10204 3.1 / 3.2 MTCs |
| Lower Manufacturing & Sourcing Costs | Save up to 15–20% compared to European suppliers |
| Favorable Exchange Rate Advantage | Reduced landed cost for international importers |
| In-House Testing & Inspection Facilities | Strict chemical, mechanical & dimensional quality checks |
| Bulk Stock & High Production Capacity | Fast order fulfillment and stable supply for large projects |
| Custom Sizes & Drawing-Based Manufacturing | Products manufactured exactly to buyer specifications |
| Export-Grade Packaging & Global Logistics | Sea-worthy packing, palletization & worldwide shipping support |
| Faster Global Shipping Routes | Optimized logistics for Middle East, Africa & Southeast Asia |
| Technical & After-Sales Support | Project assistance, documentation & responsive RFQ handling |
| Trusted by Global Steel & EPC Companies | Proven export experience across 50+ countries |
Features of Gunmetal Round Bar
- ✔ Excellent corrosion resistance, suitable for marine applications
- ✔ High tensile strength, ensuring durability under pressure
- ✔ Good machinability, allowing for precise fabrication
- ✔ Low friction properties, ideal for moving parts
- ✔ Superior wear resistance, enhancing product lifespan
- ✔ Attractive finish, suitable for aesthetic applications
Technical Overview of Gunmetal Round Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Gunmetal Round Bar | Copper (85%), Tin (5%), Zinc (5%), Lead (5%) | Used in marine hardware, valves, and fittings | ASTM B271, ISO 8734 |
| Gunmetal Round Bar | Copper (85%), Tin (5%), Zinc (5%), Lead (5%) | Ideal for precision machining and casting | BS 1400, DIN 17660 |
| Gunmetal Round Bar | Copper (85%), Tin (5%), Zinc (5%), Lead (5%) | Commonly used in the production of gears and bearings | ASTM B148, JIS H 3250 |
Specifications Table
| Material | Copper Tin Alloy (Gunmetal) |
|---|---|
| Grades | Gunmetal Grade A, Gunmetal Grade B |
| Standard | ASTM B271, BS 1400 |
| Size Range | 10 mm to 300 mm diameter |
| Length | Up to 6 meters |
| Form | Round Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Gunmetal Grade 1 | Copper 88%, Tin 10%, Zinc 2% | Marine fittings, valves, and pumps |
| Gunmetal Grade 2 | Copper 85%, Tin 5%, Zinc 5%, Lead 5% | General engineering applications, low-pressure pipelines |
| Gunmetal Grade 3 | Copper 90%, Tin 8%, Zinc 2% | High corrosion resistance applications, marine hardware |
| Gunmetal Grade 4 | Copper 80%, Tin 12%, Zinc 6% | Heavy-duty machinery, bearings, and bushings |
| Gunmetal Grade 5 | Copper 78%, Tin 14%, Zinc 8% | Specialty applications requiring increased strength |
Available Sizes of Gunmetal Round Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 10 | 12 |
| 14 | 16 |
| 18 | 20 |
| 22 | 25 |
| 28 | 30 |
| 32 | 35 |
| 40 | 45 |
| 50 | 55 |
| 60 | 70 |
| 80 | 90 |
Chemical Properties of Gunmetal Round Bar
| Element | Composition (%) |
|---|---|
| Copper (Cu) | 85.0 - 90.0 |
| Tin (Sn) | 5.0 - 10.0 |
| Zinc (Zn) | 2.0 - 5.0 |
| Lead (Pb) | 0.5 - 3.0 |
| Iron (Fe) | 0.5 - 1.0 |
| Nickel (Ni) | 0.5 - 1.0 |
| Aluminum (Al) | 0.1 - 1.0 |
| Phosphorus (P) | 0.01 - 0.5 |
Mechanical Properties of Gunmetal Round Bar
| Property | Value |
|---|---|
| Tensile Strength | 210 MPa |
| Yield Strength | 130 MPa |
| Elongation | 10% |
| Hardness (Brinell) | 80 HB |
| Modulus of Elasticity | 110 GPa |
Gunmetal Round Bar – Physical & Thermal Properties
Density of Gunmetal Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Density | 8,500 kg/m³ | 531 lb/ft³ |
Melting Point of Gunmetal Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1,100 - 1,200 °C | 2,012 - 2,192 °F |
Specific Heat of Gunmetal Round Bar
| Specific Heat of Gunmetal Round Bar | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 380 | 20 - 100 | Solid |
| 400 | 100 - 200 | Solid |
| 420 | 200 - 300 | Solid |
Electrical Resistivity of Gunmetal Round Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 70 | 20 | As Cast |
| 75 | 100 | |
| 80 | 200 | |
| 85 | 300 | |
| 90 | 400 | |
Equivalent of Gunmetal Round Bar
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM B271 | CuSn10 | C93200 |
| BS 1400 | CC491K | C93200 |
Manufacturing Process & Heat Treatment of Gunmetal Round Bar
Annealing
The annealing process for gunmetal round bars involves heating the material to a temperature of approximately 600-700°C and then allowing it to cool slowly in a furnace. This process relieves internal stresses and enhances the ductility of the material, making it easier to work with in subsequent manufacturing steps.
Forging
Forging of gunmetal round bars is performed at elevated temperatures, typically between 800-1000°C. The material is shaped using mechanical hammers or presses, which helps improve the grain structure and mechanical properties by refining the material's microstructure. This process also results in enhanced strength and toughness.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 850-900 | Oil | To increase hardness and strength through the formation of martensite. |
| Tempering | 400-600 | Air | To reduce brittleness while maintaining hardness and improving toughness. |
| Stress Relieving | 300-400 | Air | To eliminate residual stresses from the forging and hardening processes. |
The combination of these processes ensures that gunmetal round bars achieve optimal mechanical properties suitable for various industrial applications, including valve and pump components.
Various Types
Gunmetal Round Bar - C83600
- Diameter: 20mm to 250mm
- Condition: Hot Rolled / Cold Finished
- Applications: Marine, Valve Components, Pump Bodies
Gunmetal Round Bar - C93200
- Diameter: 15mm to 200mm
- Condition: Annealed
- Applications: Bearings, Bushings, General Engineering
Gunmetal Round Bar - C90700
- Diameter: 10mm to 100mm
- Condition: As Cast
- Applications: Aerospace, Electrical Components
Gunmetal Round Bar - C95400
- Diameter: 25mm to 300mm
- Condition: Cold Drawn
- Applications: Heavy Machinery, Pumps
Applications & Uses
- Oil & Gas Industry: Pipelines, process piping, and high-pressure fluid handling systems.
- Petrochemical & Refineries: Reactors, heat exchangers, and chemical processing units.
- Water Treatment Plants: Filtration systems, storage tanks, and corrosion-resistant piping.
- Pharmaceutical Industry: Hygienic piping, sanitary fittings, and cleanroom equipment.
- Food & Beverage: Processing lines, storage vessels, and contamination-free pipelines.
- Automobile & Engineering: Exhaust systems, structural parts, and precision components.
- Power & Energy Sector: Boilers, condensers, and turbine piping systems.
- Marine & Offshore: Shipbuilding, offshore platforms, and coastal infrastructure.
- Construction & Infrastructure: Structural frameworks, bridges, and industrial buildings.
Industries We Serve
Our stainless steel, alloy steel, and high-performance metal products are widely used across the following industries:
Latest Price List of Gunmetal Round Bar
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Gunmetal Round Bar | 3 mm | $5.50 – $6.00 | ₹450 – ₹500 |
| Gunmetal Round Bar | 6 mm | $5.20 – $5.70 | ₹420 – ₹480 |
| Gunmetal Round Bar | 10 mm | $4.80 – $5.30 | ₹390 – ₹440 |
Note: Prices are indicative and may vary based on size, quantity, raw material cost, and delivery location. Contact us for the latest quotation for Gunmetal Round Bar.
MOQ & Payment Terms
Minimum Order Quantity: 25–100 Kg depending on part size and grade.
Payment Terms: Depending On Grade and Quantity Size
Export Packaging & Shipping
- Seaworthy, fumigated wooden crates with waterproof inner lining
- Palletised packing with clear shipping marks and heat number identification
- Container stuffing supervision with loading photographs available on request
We Exported to 50+ Countries Worldwide
| Global Export Destinations | |||||
|---|---|---|---|---|---|
| United States | Canada | Mexico | United Kingdom | Germany | Netherlands |
| Italy | Spain | South Africa | Australia | India | Korea |
| United Arab Emirates | Saudi Arabia | Qatar | Kuwait | Oman | Bahrain |
| Singapore | Malaysia | Indonesia | Dubai | Riyadh | Dammam |
Our Certifications
We are a certified manufacturer and exporter, committed to strict quality control and international compliance standards. Below are our key certifications.
GST Registered
ISO 9001:2015
ISO 1002:2018
Udyam MSME Registration
Testing Process & Quality Assurance – Ragnar Metals & Tubes
At Ragnar Metals & Tubes, our testing process ensures the safety, reliability, and performance of stainless steel and alloy steel products supplied for global industrial and infrastructure projects. Each batch is verified from raw material selection to final dispatch under internationally recognized standards including ASTM, ASME, ISO, DIN, and EN.
Detects internal flaws using high-frequency sound waves
Measures yield strength, elongation, and material durability
Evaluates toughness under low-temperature and high-stress conditions
Ensures smoothness, coating quality, and visual compliance
Enhances hardness, strength, and corrosion resistance
Measures resistance to deformation and wear
Documentation & Global Compliance
- ✔ EN 10204 3.1 / 3.2 Mill Test Certificates (MTC)
- ✔ Batch-wise quality traceability and inspection records
- ✔ Third-party inspection by SGS, TUV, Bureau Veritas & Lloyd’s
- ✔ Export documentation support for customs and international shipping
Supporting supply for oil & gas, petrochemical, power generation, marine, infrastructure, and heavy engineering industries worldwide.
Related Products
Explore our full range of stainless steel and alloy steel products including pipes, tubes, fittings, flanges, sheets, plates, spools, fasteners, round bars, and special grades manufactured for industrial, infrastructure, and global export applications.
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Frequently Asked Questions
About Ragnar Metals & Tubes
- ✔ Leading manufacturer, stockist, and exporter of stainless steel and alloy steel products for industrial and infrastructure projects
- ✔ ISO 9001:2015 certified quality management system ensuring consistent product reliability and compliance
- ✔ Specialized in precision pipes, tubes, fittings, flanges, sheets, plates, fasteners, and round bars
- ✔ Modern processing and testing facilities with advanced manufacturing and inspection equipment
- ✔ Custom-engineered solutions based on client drawings and technical specifications
- ✔ Full material traceability with EN 10204 3.1 / 3.2 mill test certification
- ✔ Compliance with ASTM, ASME, DIN, EN, and ISO international standards
- ✔ Trusted global supplier supporting oil & gas, petrochemical, power, marine, and heavy engineering industries