655 Silicon Bronze Tech Specs
655 High silicon Bronze A Technical Specifications
Composition:
| Nominal | Minimum | Maximum | |
| Copper | 97% | ... | ... |
| Lead | ... | ... | .05% |
| Iron | ... | ... | 0.8% |
| Zinc | ... | ... | 1.5% |
| Manganese | ... | 0.5% | 1.3% |
| Silicon | 3% | 2.8% | 3.8% |
| Nickel | ... | ... | 0.6% |
Physical Properties:
| Melting Point (Liquidus) | 1880 F |
| Melting Point (Solidus) | 1780 F |
| Density | .308 lb / cu in @ 68 F |
| Specific Gravity | 8.53 |
| Coefficient of Thermal Expansion | .0000100 per degree F to 572 F |
| Thermal Conductivity | 21 btu / sq ft / ft / hr / degree F @ 68 F |
| Electrical Resistivity | 148 Ohms @ 68 F |
| Electrical Conductivity | 7.0% IACS @ 68 F |
| Thermal Capacity (Specific Heat) | 09 btu / lb degree F @ 68 F |
| Modulus of Elasticity (Tension) | 15,000 ksi |
| Modulus of Rigidity | 5,600 ksi |
Typical Uses:
- AIRCRAFT: hydraulic pressure lines
- HARDWARE: bolts, burrs, butts, clamps, cotter pins, hinges, marine hardware, nails, nuts, pole line hardware, screws
- INDUSTRIAL: bearing plates, bushings, cable, channels, chemical equipment, heat exchanger tubes, kettles, piston rings, tanks, rivets, screen cloth and wire, screen plates, shafting
- MARINE: propeller shafts
Common Fabrication Processes:
Blanking, drawing, forming and bending, heading and upsetting, hot forging and pressing, roll threading and knurling, shearing, squeezing and swaging
Fabrication Properties:
- Capacity for Being Cold Worked: Excellent
- Capacity for Being Hot Formed: Excellent
- Hot Forgeability Rating (Forging Brass = 100): 40
- Hot Working Temperature: 1300-1600 F or 700-875 C
- Annealing Temperature: 900-1300 F or 475-700 C
- Machinability Rating (Free Cutting Brass = 100): 30