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Phosphor Bronze Angle & Channel is a high-performance copper alloy product designed to provide exceptional strength, corrosion resistance, and wear characteristics. These materials are well-known for their toughness, fine grain structure, and superior fatigue resistance. Both C51000 and C51900 are suitable for heavy-duty mechanical applications where precision and durability are essential. With excellent formability and consistent mechanical properties, these alloys perform reliably in demanding industrial environments.
The combination of tin and phosphorus in these bronze grades gives them a unique balance of elasticity, hardness, and conductivity. C51000 typically contains around 5% tin, while C51900 contains slightly more, offering improved strength and resilience. The addition of phosphorus acts as a deoxidizer, enhancing the alloy’s wear resistance and machinability. These properties make Phosphor Bronze angles and channels ideal for use in electrical, marine, and architectural applications where long service life is expected.
Phosphor Bronze C51000 / C51900 Angles & Channels are particularly valued for their ability to maintain mechanical integrity under repeated stress or vibration. They are often used in components like springs, bushings, bearings, and connectors that experience cyclic loading. The material’s high fatigue resistance ensures that it can withstand continuous operation without cracking or deformation. Moreover, it has excellent anti-galling properties, reducing friction between moving parts.
One of the major advantages of Phosphor Bronze is its outstanding corrosion resistance, especially in marine and industrial environments. It resists attack from seawater, steam, and mild acids, making it perfect for ship fittings, pump components, and valves. The alloy’s non-magnetic and non-sparking characteristics also make it suitable for use in electrical and explosive environments, providing both safety and performance reliability.
Fabrication of Phosphor Bronze Angle & Channel is simple due to its excellent machinability and workability. It can be easily formed, bent, and joined using standard welding, soldering, or brazing methods. These materials can also be cold-worked to achieve specific hardness and tensile properties. The smooth surface finish and tight dimensional tolerances make them suitable for precision mechanical assemblies and decorative applications.
Common uses of Phosphor Bronze (C51000 / C51900) Angles and Channels include electrical connectors, terminals, springs, architectural panels, and support structures. In the automotive and aerospace industries, these alloys are employed for parts requiring a combination of high strength and electrical conductivity. Their anti-corrosive properties ensure durability even under extreme temperature and environmental conditions, extending the lifespan of the components.
Overall, Phosphor Bronze C51000 and C51900 Angles & Channels provide a perfect balance of mechanical strength, fatigue resistance, and aesthetic appeal. Available in various thicknesses, lengths, and custom dimensions, these profiles are manufactured to meet international standards. They are ideal for customers seeking reliable, high-quality materials for industrial, electrical, and decorative applications where consistent performance and longevity are crucial.
Specification Table
| Property | C51000 (Phosphor Bronze) | C51900 (Phosphor Bronze) | Standard Specification |
|---|---|---|---|
| UNS Number | C51000 | C51900 | ASTM B103 / B139 / B150 |
| Other Names | 5% Phosphor Bronze | 6% Phosphor Bronze | Phosphor Bronze Alloy |
| Form | Angle, Channel, Strip, Sheet, Plate, Rod, Bar | Custom Cut Lengths Available | |
| Density | 8.83 g/cm³ | 8.80 g/cm³ | — |
| Melting Point | 930°C (1710°F) | 940°C (1725°F) | — |
| Electrical Conductivity | 15% IACS | 13% IACS | — |
| Modulus of Elasticity | 117 GPa (17 x 106 psi) | Typical Value | |
| Temper Available | H00 (Annealed), H01, H02, H04 (1/4 Hard to Full Hard) | Per ASTM B103 | |
| Corrosion Resistance | Excellent in Marine & Industrial Atmospheres | — | |
| Applications | Springs, Bushings, Bearings, Electrical Terminals, Connectors, Marine Fittings | — | |
Chemical Composition (Typical ranges for SSIS)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | C51000 (Phosphor Bronze) | C51900 (Phosphor Bronze) | Remarks |
|---|---|---|---|
| Copper (Cu) | 94.0 – 96.0% | 92.0 – 95.0% | Base Metal |
| Tin (Sn) | 4.2 – 5.8% | 5.5 – 7.0% | Provides strength and hardness |
| Phosphorus (P) | 0.03 – 0.35% | 0.03 – 0.35% | Deoxidizer, improves wear resistance |
| Lead (Pb) | 0.05% max | 0.05% max | Improves machinability (trace) |
| Zinc (Zn) | 0.30% max | 0.30% max | Residual element |
| Iron (Fe) | 0.10% max | 0.10% max | Residual impurity |
| Others (Total) | 0.10% max | 0.10% max | Minor residuals allowed |
Mechanical Properties (Typical)
| Property | C51000 (Phosphor Bronze) | C51900 (Phosphor Bronze) | Test Condition / Remarks |
|---|---|---|---|
| Tensile Strength | 345 – 620 MPa | 380 – 655 MPa | Depends on temper (Annealed to Hard) |
| Yield Strength (0.2% Offset) | 200 – 450 MPa | 240 – 500 MPa | Typical range by temper |
| Elongation in 50mm | 10 – 45% | 8 – 40% | Decreases with hardness |
| Hardness (Rockwell B) | 50 – 90 HRB | 55 – 95 HRB | Annealed to full hard |
| Modulus of Elasticity | 117 GPa (17 x 106 psi) | Typical for both alloys | |
| Shear Strength | 240 MPa | 260 MPa | Average values |
| Fatigue Strength | 150 MPa | 165 MPa | At 107 cycles |
| Electrical Conductivity | 15% IACS | 13% IACS | Measured at 20°C |
| Coefficient of Thermal Expansion | 17.5 x 10-6 /°C | 20–300°C range | |
Equivalent Grades
| Standard / Country | C51000 Equivalent Grade | C51900 Equivalent Grade | Remarks |
|---|---|---|---|
| UNS (USA) | C51000 | C51900 | Unified Numbering System |
| ASTM / SAE | ASTM B103 / B150 | ASTM B103 / B150 | Phosphor Bronze Sheet, Strip, and Bar |
| BS (United Kingdom) | PB102 | PB103 | British Standard Grades |
| EN / DIN (Europe / Germany) | CuSn5 | CuSn6 | EN 12163 / DIN 17662 |
| JIS (Japan) | C5191 | C5210 | Japanese Industrial Standard |
| ISO | CuSn5P | CuSn6P | ISO 1634-1 Standard Designation |
| AFNOR (France) | CuSn5 | CuSn6 | NF A51-102 Standard |
| Russian GOST | BrОF6.5-0.15 | BrОF7-0.2 | Phosphor Bronze Alloy Equivalent |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Size (mm) | Leg A (mm) | Leg B (mm) | Thickness (mm) | Weight (kg/m) | Approx. Weight (kg/ft) |
|---|---|---|---|---|---|
| 25 x 25 x 3 | 25 | 25 | 3 | 1.25 | 0.38 |
| 30 x 30 x 3 | 30 | 30 | 3 | 1.50 | 0.46 |
| 40 x 40 x 4 | 40 | 40 | 4 | 2.65 | 0.81 |
| 50 x 50 x 5 | 50 | 50 | 5 | 4.15 | 1.26 |
| 60 x 60 x 6 | 60 | 60 | 6 | 5.90 | 1.80 |
| 75 x 75 x 6 | 75 | 75 | 6 | 7.25 | 2.21 |
| 80 x 80 x 8 | 80 | 80 | 8 | 9.80 | 2.99 |
| 100 x 100 x 10 | 100 | 100 | 10 | 14.60 | 4.45 |
| 120 x 60 x 8 (Channel) | 120 | 60 | 8 | 11.25 | 3.43 |
| 150 x 75 x 10 (Channel) | 150 | 75 | 10 | 16.90 | 5.15 |
Types Of phosphor Bronze Angal channel
Stainless Steel Angal & channel
Monel 400 Angal & channel
Inconel 600 Angal & channel
Hastelloy Angal & channel
Super Duplex Angal & channel
Duplex Angal & channel
Nickel Angal & channel
Monel K500 Angal & channel
Frequently Asked Questions (FAQ)
What is Phosphor Bronze (C51000 / C51900) used for?
Phosphor Bronze (C51000 / C51900) Angles and Channels are commonly used in electrical, marine, and mechanical applications. Their superior wear resistance and fatigue strength make them ideal for bushings, bearings, springs, connectors, electrical terminals, and decorative structural components in industrial and architectural designs.
What are the main differences between C51000 and C51900?
The primary difference between the two alloys lies in their tin content. C51000 contains around 5% tin, offering good strength and flexibility, while C51900 has slightly higher tin content (up to 7%), which provides greater hardness and tensile strength. Both contain phosphorus for deoxidation and enhanced wear resistance.
Is Phosphor Bronze resistant to corrosion?
Yes, Phosphor Bronze is highly resistant to corrosion, especially in marine and industrial environments. It resists oxidation and attack from seawater, steam, and mild acids, making it suitable for use in ship components, pump parts, and other outdoor applications requiring long-term durability.
Can Phosphor Bronze Angle & Channel be welded or soldered?
Absolutely. Phosphor Bronze alloys are known for excellent solderability and brazeability. Welding is also possible using proper filler materials and controlled heat input to maintain mechanical properties. These characteristics make them ideal for joining and assembly work in precision and electrical applications.
What tempers are available for Phosphor Bronze Angles and Channels?
Phosphor Bronze C51000 and C51900 are available in various tempers such as annealed (H00), quarter hard (H01), half hard (H02), and full hard (H04). The chosen temper affects the material’s tensile strength, yield strength, and elongation depending on the end-use requirements.
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