Phosphor Bronze C51000
UNS C51000
Description
Phosphor Bronze C51000, also known as CW451K, consists of copper with 4.2–5.8% of tin and 0.03–0.35% phosphorus. Due to the addition of tin, the corrosion resistance and strength of the alloy is increased. And the addition of phosphorus increases the wear resistance and stiffness of the alloy. C51000 is notable for its toughness, strength, low coefficient of friction, and fine grain. It is widely used in the electronic, electrical, automotive industries, wherever drawing, spinning, blanking or cold working is required.
General Information
| Items | C51000 |
|---|---|
| Catalog | ACAM-Cu-A018 |
| Density | 8.86 g/cm3 |
| Melting Point | 954 ℃ |
Chemical Component
| Cu | Pb | Sn | Zn | Fe | P |
|---|---|---|---|---|---|
| Balance | 0.05 max | 4.2-5.8 | 0.3 max | 0.1 max | 0.03-0.35 |
* Unit: %
Typical Mechanical Properties
| Items | C51000 |
|---|---|
| Tensile Strength | 324-965 MPa |
| Yield Strength | 131-552 MPa |
| Elongation at Break (in 50.8mm) | 64% |
| Machinability (UNS C36000 (free-cutting brass) = 100) | 20 |
| Shear Modulus | 41 GPa |
| Poisson's Ratio | 0.34 |
| Elastic Modulus | 117 GPa |
Fabrication Properties
| Technique | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing | Excellent |
| Oxyacetylene Welding | Fair |
| Gas Shielded Arc Welding | Good |
| Coated Metal Arc Welding | Fair |
| Spot Weld | Good |
| Seam Weld | Fair |
| Butt Weld | Excellent |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Poor |
| Machinability Rating | 20 |
Common Fabrication Processes
- Forming and Bending
- Heading and Upsetting
- Roll Threading and Knurling
- Blanking
- Drawing
- Shearing
- Stamping
Material Forms
Alfa Chemistry offers phosphor bronze C51000 in a variety of forms, including Bar, Plate, Rod, Sheet, Strip, Tube, Wire, Bolt, Nut, etc.
Applications
Typical uses of phosphor bronze C51000 include:
- Architecture: bridge bearing plates
- Fasteners: cotter pins, fasteners, lock washers
- Electrical: electrical connectors, electrical flexing contact blades, electromechanical spring components, electronic and precision instrument parts, electronic connectors, fuse clips, resistance wire, switch parts, wire brushes
- Industrial: beater bar, bellows, bourdon tubes, chemical hardware, clutch disks, diaphragms, perforated sheets, pressure responsive elements, sleeve bushings, springs, textile machinery, truss wire, welding rods
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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