Cast C54400
Phosphor bronze alloys such as C54400, also known as C544, consist of copper with 0.50–11.00% 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 B-2
TEMPERS: H04 Hard
Solids: 3/8” to 2 3/4” O.D.
HEX: 3/8" to 2" O.D.
Rectangles: Consult Mill
Standard lengths: 144”
Typical uses
ELECTRICAL: electrical connectors
Industrial: bearings, bushings, gears, pinions, screw machine products, shafts, sleeve bearings, thrust bearings, thrust washers, valve parts
Similar or equivalent specification
| CDA | ASTM | SAE | AMS | Federal | Military | Other |
|---|---|---|---|---|---|---|
| C54400 | B139 B139M | J461 J463 |
Chemical composition
| Cu% | Pb% | Sn% | Zn% | Fe% | P% |
|---|---|---|---|---|---|
| Rem. | 3.00-4.00 | 3.50-4.50 | 1.50-4.60 | 0.10 | 0.01-0.50 |
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) |
|---|---|---|
| C54400 | 80 | 0.320 |
Mechanical properties
Mechanical properties according to ASTM B139/B139M-12(2017)
H04
Size Range: Over 1/16" to 1/4" 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 | |
| 65 | 450 | 8 | 86 | |||
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 | |
| 60 | 415 | 10 | 86 | |||
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 | |
| 55 | 380 | 12 | 86 | |||
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 | |
| 50 | 345 | 15 | 86 | |||
Physical properties
| US Customary | Metric | |
|---|---|---|
| Melting point - liquidus | 1830 °F | 999 °C |
| Melting point - solidus | 1700 °F | 927 °C |
| Density | 0.320 lb/in³ at 68 °F | 8.89 gm/cm³ at 20 °C |
| Specific gravity | 8.89 | 8.89 |
| Electrical conductivity | 19% IACS at 68 °F | 0.111 MegaSiemens/cm at 20 °C |
| Thermal conductivity | 50 Btu/sq ft/ft hr/°F at 68 °F | 86.5 W/m at 20 °C |
| Coefficient of thermal expansion 68-572 | 9.6 · 10-6 per °F (68-572 °F) | 16.6 · 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 | 15000 ksi | 103420 MPa |
| Modulus of Rigidity | 5600 ksi | 38610 MPa |
Fabrication properties
| Technique | Suitability |
|---|---|
| Soldering | Excellent |
| Brazing | Good |
| Oxyacetylene welding | Not recommended |
| Gas shielded arc welding | Not recommended |
| Coated metal arc welding | Not recommended |
| Spot Weld | Not recommended |
| Seam Weld | Not recommended |
| Butt Weld | Fair |
| Capacity for Being Cold Worked | Good |
| Machinability rating | 80 |
Thermal properties
| Treatment | Minimum * | Maximum * |
|---|---|---|
| Annealing | 900 | 1250 |