Cast C51000
Phosphor bronze alloys such as C51000, also known as C510, consist of copper with 0.50–11.00% of tin and 0.01–0.35% phosphorus. The tin increases the corrosion resistance and strength of the alloy. The phosphorus increases the wear resistance and stiffness of the alloy. These alloys are notable for their toughness, strength, low coefficient of friction, and fine grain.
Information
Product description: Phosphor Bronze 5% A
TEMPERS: H04 Half Hard, H08 Spring
Solids: 3/8” to 2 1/2” O.D.
HEX: 3/8" to 2" O.D.
Rectangles: Consult Mill
Standard lengths: 144”
Typical uses
ARCHITECTURE: bridge bearing plates
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
Fasteners: cotter pins, fasteners, lock washers
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
Similar or equivalent specification
| CDA | ASTM | SAE | AMS | Federal | Military | Other |
|---|---|---|---|---|---|---|
| C51000 | B139 B139M | J461 J463 | 4625 |
Chemical composition
| Cu% | Pb% | Sn% | Zn% | Fe% | P% |
|---|---|---|---|---|---|
| Rem. | 0.05 | 4.20-5.80 | 0.30 | 0.10 | 0.03-0.35 |
Chemical composition according to ASTM B139/B139M-12(2017)
Note: Cu + sum of named elements, 99.5% min. Single values represent maximums.
Machinability
| Copper alloy UNS no. | Machinability rating | Density (lb / in³ at 68 °F) |
|---|---|---|
| C51000 | 20 | 0.320 |
Mechanical properties
Mechanical properties according to ASTM B139/B139M-12(2017)
H04 Hard
Size Range: 1/4" to 1/2" Round and Hexagonal Inclusive
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, 4x Diameter or Specimen Thickness, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 70 | 485 | 13 | 87 | |||
Size Range: Over 1/2" to 1" Round and Hexagonal Inclusive
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, 4x Diameter or Specimen Thickness, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 60 | 415 | 15 | 87 | |||
Size Range: Over 1" Round and Hexagonal
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, 4x Diameter or Specimen Thickness, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 55 | 380 | 18 | 87 | |||
H08 Spring
Size Range: 0.026" to 1/16" Round Inclusive
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, 4x Diameter or Specimen Thickness, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 115 | 760 | |||||
Size Range: Over 1/16" to 1/8" Round Inclusive
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, 4x Diameter or Specimen Thickness, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 100 | 760 | |||||
Size Range: Over 1/4" to 3/8" Round Inclusive
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, 4x Diameter or Specimen Thickness, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 100 | 690 | 5 | ||||
Size Range: Over 3/8" to 1/2' Round Inclusive
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, 4x Diameter or Specimen Thickness, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical HRB | |
| 90 | 620 | 9 | 95 | |||
Physical properties
| US Customary | Metric | |
|---|---|---|
| Melting point - liquidus | 1920 °F | 1049 °C |
| Melting point - solidus | 1750 °F | 954 °C |
| Density | 0.32 lb/in³ at 68 °F | 8.86 gm/cm³ at 20 °C |
| Specific gravity | 8.86 | 8.86 |
| Electrical conductivity | 15% IACS at 68 °F | 0.088 MegaSiemens/cm at 20 °C |
| Thermal conductivity | 40 Btu/sq ft/ft hr/°F at 68 °F | 69.2 W/m at 20 °C |
| Coefficient of thermal expansion 68-572 | 9.9 · 10-6 per °F (68-572 °F) | 17.1 · 10-6 per °C (20-300 °C) |
| Specific heat capacity | 0.09 Btu/lb/°F at 68 °F | 377.1 J/kg at 20 °C |
| Modulus of elastic in tension | 16000 ksi | 110310 MPa |
| Modulus of Rigidity | 6000 ksi | 41370 MPa |
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 |
Thermal properties
| Treatment | Minimum * | Maximum * |
|---|---|---|
| Annealing | 900 | 1250 |