Gunmetal Flat Bars
Gunmetal Flat Bars are precision-engineered components crafted from a copper-based alloy known for its excellent strength, corrosion resistance, and machinability. These flat bars are typically produced through hot rolling or extrusion processes, resulting in uniform thickness and smooth surface finishes. Their robust composition makes them a preferred choice in industries requiring durable and reliable metal parts that can withstand harsh environments.
Manufactured to meet stringent industrial standards, these flat bars are available in a variety of sizes and thicknesses, ensuring compatibility with diverse engineering requirements. The alloy’s inherent properties, including high tensile strength and resistance to wear and corrosion, make these bars ideal for fabricating valves, pumps, marine hardware, and heavy-duty machinery components. Their dimensional stability under mechanical stress further enhances their suitability for critical applications.
In industrial settings, these bars serve a pivotal role in facilitating the construction of equipment subjected to continuous friction and exposure to water or steam. Their excellent casting and machining capabilities allow for intricate shaping and finishing, which is essential in precision engineering sectors such as aerospace, automotive, and shipbuilding. Additionally, their non-sparking and anti-corrosive nature make them valuable in hazardous environments requiring stringent safety standards.
Export readiness is a key aspect of these products, with manufacturers ensuring compliance with international quality certifications such as ASTM, DIN, and ISO standards. The bars are typically supplied with detailed inspection reports and traceability documentation, catering to the rigorous demands of global industrial buyers. Packaging and logistics are optimized to preserve product integrity during transit, supporting timely delivery to overseas markets.
Overall, these flat bars represent a versatile and dependable material solution for industrial buyers seeking components that combine strength, durability, and corrosion resistance. Their adaptability across multiple sectors and adherence to global manufacturing standards make them an essential stock item for suppliers and fabricators aiming to meet exacting client specifications worldwide.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Gunmetal Flat Bars 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 Flat Bars
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Gunmetal Flat Bars
- 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 Flat Bars
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 Flat Bars
| 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 Flat Bars
- ✔ High corrosion resistance, suitable for marine applications
- ✔ Excellent wear resistance, ideal for heavy-duty use
- ✔ Good machinability, allowing for easy fabrication
- ✔ Strong tensile strength, providing durability and longevity
- ✔ Low friction properties, enhancing performance in moving parts
- ✔ Aesthetic appeal with a unique bronze-like finish
Technical Overview of Gunmetal Flat Bars
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Gunmetal Flat Bar | Copper (85%), Tin (5%), Zinc (5%), Lead (5%) | Used in marine fittings, valves, and pump components | ASTM B271, BS 1400 |
| Gunmetal Flat Bar | Copper (88%), Tin (8%), Zinc (3%), Lead (1%) | Ideal for hydraulic applications and corrosion-resistant components | ASTM B62, BS 1400 |
| Gunmetal Flat Bar | Copper (80%), Tin (10%), Zinc (8%), Lead (2%) | Commonly used in architectural applications and decorative fittings | ASTM B584, BS 1400 |
Specifications Table
| Material | Copper Tin Alloy (Gunmetal) |
|---|---|
| Grades | CC491K, CC493K |
| Standard | ASTM B271, BS 1400 |
| Size Range | 20 mm to 100 mm width, 3 mm to 20 mm thickness |
| Length | Up to 6000 mm |
| Form | Flat Bars |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| C83600 (General Purpose Gunmetal) | Cu 85%, Sn 5%, Pb 5%, Zn 5% | Marine fittings, valve bodies, and pumps. |
| C84400 (Aluminum Bronze) | Cu 80%, Al 10%, Fe 3%, Ni 5% | High-strength applications, marine hardware. |
| C90500 (Leaded Gunmetal) | Cu 88%, Sn 4%, Pb 7%, Zn 1% | Machined components, bearings, and bushings. |
| C90510 (Low Lead Gunmetal) | Cu 85%, Sn 5%, Pb 3%, Zn 7% | Automotive applications, electrical connectors. |
| C66200 (Nickel-Silicon Bronze) | Cu 90%, Ni 5%, Si 5% | Marine applications, pressure vessels, and fittings. |
Available Sizes of Gunmetal Flat Bars (MM)
| Size (MM) | Size (MM) |
|---|---|
| 10 x 3 | 20 x 5 |
| 15 x 4 | 25 x 6 |
| 30 x 10 | 40 x 20 |
| 50 x 15 | 60 x 25 |
| 70 x 30 | 80 x 40 |
| 90 x 45 | 100 x 50 |
| 120 x 60 | 150 x 75 |
| 200 x 100 | 250 x 125 |
| 300 x 150 | 350 x 175 |
| 400 x 200 | 500 x 250 |
Chemical Properties of Gunmetal Flat Bars
| Element | Composition (%) |
|---|---|
| Copper (Cu) | 85.0 - 90.0 |
| Tin (Sn) | 5.0 - 10.0 |
| Lead (Pb) | 1.0 - 2.0 |
| Zinc (Zn) | 0.5 - 1.5 |
| Iron (Fe) | 0.5 - 1.0 |
| Nickel (Ni) | 0.2 - 0.5 |
| Phosphorus (P) | 0.01 - 0.5 |
| Aluminium (Al) | 0.0 - 0.5 |
Mechanical Properties of Gunmetal Flat Bars
| Property | Value |
|---|---|
| Tensile Strength | 200 - 300 MPa |
| Yield Strength | 100 - 200 MPa |
| Elongation | 1.5 - 5.0 % |
| Hardness (Brinell) | 70 - 120 HB |
| Modulus of Elasticity | 100 - 120 GPa |
Gunmetal Flat Bars – Physical & Thermal Properties
Density of Gunmetal Flat Bars
| Property | Metric | Imperial |
|---|---|---|
| Density | 8.5 g/cm³ | 0.308 lb/in³ |
Melting Point of Gunmetal Flat Bars
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 950 - 1050 °C | 1742 - 1922 °F |
Specific Heat of Gunmetal Flat Bars
| Specific Heat of Gunmetal Flat Bars | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 380 | 20 - 100 | Solid |
| 400 | 100 - 300 | Solid |
| 420 | 300 - 600 | Solid |
Electrical Resistivity of Gunmetal Flat Bars
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 50 | 20 | As-Cast |
| 55 | 100 | |
| 60 | 200 | |
| 65 | 300 | |
| 70 | 400 | |
Equivalent of Gunmetal Flat Bars
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| BS 1400 LG2 | CuSn10Zn | C93200 |
| ASTM B271 | CuSn10 | C83600 |
Manufacturing Process & Heat Treatment of Gunmetal Flat Bars
Annealing
Annealing of gunmetal flat bars involves heating the material to a temperature of approximately 600-700°C, followed by controlled cooling. This process helps to reduce internal stresses, improve ductility, and refine the microstructure, resulting in enhanced machinability and overall performance of the flat bars.
Forging
The forging process for gunmetal flat bars includes heating the metal to a temperature range of 700-900°C and then shaping it through mechanical deformation. This process increases the strength and toughness of the material by aligning the grain structure and eliminating any porosity, ensuring a dense and durable final product.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 800-900 | Water or Oil | To increase hardness and strength of the material. |
| Tempering | 200-600 | Air | To reduce brittleness and improve toughness after hardening. |
| Stress Relieving | 300-400 | Air | To relieve residual stresses from the forging and machining processes. |
The combination of these processes ensures that gunmetal flat bars exhibit optimal mechanical properties, making them suitable for a wide range of applications in various industries.
Various Types
Gunmetal Flat Bar - Standard
- Dimensions: 25mm x 5mm to 100mm x 20mm
- Condition: Hot Rolled
- Applications: General engineering, automotive components
Gunmetal Flat Bar - Precision
- Dimensions: 10mm x 3mm to 50mm x 10mm
- Condition: Cold Drawn
- Applications: Precision engineering, machining
Gunmetal Flat Bar - Anodized
- Dimensions: 20mm x 5mm to 80mm x 15mm
- Condition: Anodized Finish
- Applications: Architectural, decorative applications
Gunmetal Flat Bar - High Strength
- Dimensions: 30mm x 10mm to 100mm x 25mm
- Condition: Heat Treated
- Applications: Heavy machinery, structural support
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 Flat Bars
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Gunmetal Flat Bars | 3 mm | $3.50 – $4.00 | ₹290 – ₹320 |
| Gunmetal Flat Bars | 6 mm | $3.80 – $4.30 | ₹310 – ₹340 |
| Gunmetal Flat Bars | 10 mm | $4.00 – $4.50 | ₹320 – ₹350 |
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 Flat Bars.
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.
People Also Search For
- Bronze Flat Bars
- Brass Flat Bars
- Aluminum Flat Bars
- Stainless Steel Flat Bars
- Metal Flat Bar Applications
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