Phosphorus Bronze Flat Bars
Phosphorus Bronze Flat Bars are highly regarded in industrial sectors for their exceptional strength, corrosion resistance, and excellent wear properties. These bars are crafted from an alloy consisting primarily of copper, tin, and a small percentage of phosphorus, which enhances their hardness and fatigue resistance. Their flat, rectangular cross-section makes them ideal for manufacturing components requiring precise dimensional stability and durability.
Manufactured to stringent specifications, these bars typically exhibit a tensile strength ranging from 550 to 750 MPa, with good elongation and hardness values that suit heavy-duty applications. The material’s inherent resistance to fatigue and its ability to withstand harsh environmental conditions make it a preferred choice for precision parts such as bearings, springs, and electrical connectors. Additionally, the excellent machinability of this alloy allows for complex shaping without compromising structural integrity.
Industries such as aerospace, marine, electrical, and automotive rely heavily on these flat bars for components that demand longevity and reliability. Their anti-friction characteristics and resistance to corrosion in saltwater environments make them particularly valuable for marine hardware and pump components. Electrical applications benefit from the alloy’s superior conductivity combined with mechanical strength, ensuring efficient and durable connections.
Export-ready with compliance to international standards such as ASTM B103 and ISO 2093, these flat bars are available in various sizes and finishes to meet global industrial requirements. Packaging and handling are optimized to preserve material quality during transit, ensuring that buyers receive products that are ready for immediate use in production lines or assembly processes. Reliable supply chains and quality certifications further support global distribution efforts.
For industrial buyers seeking robust, versatile, and precision-engineered materials, these flat bars offer a dependable solution. Their balanced combination of mechanical properties, corrosion resistance, and machinability ensures they can meet the demands of diverse applications while maintaining consistent performance across multiple industries worldwide.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Phosphorus Bronze 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 Phosphorus Bronze Flat Bars
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Phosphorus Bronze 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 Phosphorus Bronze 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 Phosphorus Bronze 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 Phosphorus Bronze Flat Bars
- ✔ Excellent corrosion resistance
- ✔ High fatigue strength
- ✔ Superior wear resistance
- ✔ Good electrical conductivity
- ✔ Easy to machine and fabricate
- ✔ High tensile strength
Technical Overview of Phosphorus Bronze Flat Bars
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Phosphorus Bronze Flat Bar | Copper (Cu): 90-95%, Tin (Sn): 5-10%, Phosphorus (P): 0.01-0.5% | Manufacturing of marine hardware, electrical components, and springs | ASTM B150, ASTM B271 |
| Phosphorus Bronze Flat Bar | Copper (Cu): 90-95%, Tin (Sn): 5-10%, Phosphorus (P): 0.01-0.5% | Applications requiring good corrosion resistance and wear resistance | ASTM B150, ASTM B271 |
| Phosphorus Bronze Flat Bar | Copper (Cu): 90-95%, Tin (Sn): 5-10%, Phosphorus (P): 0.01-0.5% | Used in the manufacture of gears, shafts, and valves | ASTM B150, ASTM B271 |
Specifications Table
| Material | Phosphorus Bronze |
|---|---|
| Grades | C51900, C52000, C52100 |
| Standard | ASTM B150, ASTM B271 |
| Size Range | 1/4" to 4" width, 1/8" to 1" thickness |
| Length | Up to 12 feet |
| Form | Flat Bars |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| C51000 | 90% Copper, 10% Tin | Electrical connectors, springs, and fasteners |
| C51100 | 85% Copper, 15% Tin | High-strength components, marine hardware |
| C52100 | 95% Copper, 5% Tin | High-temperature applications, pump components |
| C54400 | 80% Copper, 20% Tin | Wear-resistant applications, bushings |
| C61400 | 70% Copper, 30% Tin | Heavy-duty applications, industrial machinery |
Available Sizes of Phosphorus Bronze Flat Bars (MM)
| Size (MM) | Size (MM) |
|---|---|
| 10 x 3 | 25 x 5 |
| 10 x 5 | 30 x 10 |
| 15 x 3 | 30 x 5 |
| 15 x 5 | 40 x 10 |
| 20 x 3 | 40 x 5 |
| 20 x 5 | 50 x 10 |
| 25 x 3 | 50 x 5 |
| 25 x 10 | 60 x 10 |
| 30 x 3 | 60 x 5 |
| 30 x 7 | 70 x 10 |
Chemical Properties of Phosphorus Bronze Flat Bars
| Element | Composition (%) |
|---|---|
| Copper (Cu) | 90.0 - 95.0 |
| Tin (Sn) | 5.0 - 10.0 |
| Phosphorus (P) | 0.01 - 0.5 |
| Zinc (Zn) | 0.0 - 5.0 |
| Lead (Pb) | 0.0 - 0.2 |
| Iron (Fe) | 0.0 - 0.3 |
| Nickel (Ni) | 0.0 - 0.5 |
| Other Elements | Balance |
Mechanical Properties of Phosphorus Bronze Flat Bars
| Property | Value |
|---|---|
| Tensile Strength | 600 - 800 MPa |
| Yield Strength | 350 - 500 MPa |
| Elongation | 10 - 20 % |
| Hardness (Brinell) | 150 - 250 HB |
| Modulus of Elasticity | 100 - 120 GPa |
Phosphorus Bronze Flat Bars – Physical & Thermal Properties
Density of Phosphorus Bronze Flat Bars
| Property | Metric | Imperial |
|---|---|---|
| Density | 8.73 g/cm³ | 0.315 lb/in³ |
Melting Point of Phosphorus Bronze Flat Bars
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 850 - 950 °C | 1562 - 1742 °F |
Specific Heat of Phosphorus Bronze Flat Bars
| Specific Heat of Phosphorus Bronze Flat Bars | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 380 | 20 - 100 | Solid |
| 420 | 100 - 200 | Solid |
| 460 | 200 - 300 | Solid |
Electrical Resistivity of Phosphorus Bronze Flat Bars
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 16.5 | 20 | As-rolled |
| 17.0 | 100 | |
| 17.5 | 200 | |
| 18.0 | 300 | |
| 18.5 | 400 | |
Equivalent of Phosphorus Bronze Flat Bars
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM B150 | CuSn | C51000 |
| BS 2870 | PB1 | C51900 |
Manufacturing Process & Heat Treatment of Phosphorus Bronze Flat Bars
Annealing
Annealing of phosphorus bronze flat bars is performed to relieve internal stresses and enhance ductility. The bars are heated to a temperature range of 500-600°C and then slowly cooled. This process improves the material's workability and prepares it for subsequent forming processes.
Forging
The forging process involves heating the phosphorus bronze to a temperature of approximately 800-900°C and then mechanically shaping it using hammers or presses. This technique enhances the grain structure and overall strength of the material, ensuring it meets the required specifications for industrial applications.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 700-800 | Water or Oil | Increase hardness and strength |
| Tempering | 300-400 | Air | Reduce brittleness and improve toughness |
| Stress Relieving | 200-300 | Air | Minimize residual stresses from processing |
The combination of these processes ensures that phosphorus bronze flat bars achieve the desired mechanical properties and performance characteristics necessary for various industrial applications.
Various Types
Phosphorus Bronze C51000 Flat Bar
- Thickness: 1/4" to 4", Width: 1" to 12"
- Condition: Hot Rolled, Cold Drawn
- Applications: Electrical components, Marine hardware
Phosphorus Bronze C52100 Flat Bar
- Thickness: 1/8" to 3", Width: 1" to 10"
- Condition: Annealed, Tempered
- Applications: Valve components, Fasteners
Phosphorus Bronze C53400 Flat Bar
- Thickness: 3/16" to 5", Width: 2" to 8"
- Condition: Rolled, Extruded
- Applications: Marine applications, Gaskets
Phosphorus Bronze C54400 Flat Bar
- Thickness: 1/8" to 2", Width: 1" to 6"
- Condition: Cold Drawn, Hot Rolled
- Applications: Bearings, Electrical contacts
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 Phosphorus Bronze Flat Bars
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Phosphorus Bronze | 3 mm | $7.50 – $8.00 | ₹620 – ₹650 |
| Phosphorus Bronze | 6 mm | $7.00 – $7.50 | ₹580 – ₹620 |
| Phosphorus Bronze | 10 mm | $6.50 – $7.00 | ₹550 – ₹580 |
Note: Prices are indicative and may vary based on size, quantity, raw material cost, and delivery location. Contact us for the latest quotation for Phosphorus Bronze 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.
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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