C651 Silicon Bronze Alloy Wire (CuSi1)
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Alloy C651 is a corrosion resistant copper alloy. It is primarily used as a welding rod and for mechnical fasteners and electrical connections.
Mechanical Properties
Round Wire
| Temper Name | Temper Code | Tensile Strength (N/mm²) | Mill Limits | |
| Min | Max | |||
| Annealed | O61 | 260 | 380 | .0254 - 3.264 mm |
| 1/4 Hard | H01 | 415 | 515 | |
| 1/2 Hard | H02 | 515 | 655 | |
| Hard | H04 | 620 | 760 | |
| Spring | H08 | 690 | 0 | |
Square Wire
| Temper Name | Temper Code | Tensile Strength (N/mm²) | Mill Limits | |
| Min | Max | |||
| Annealed | O61 | 260 | 380 | .2540 - 1.905 mm |
| 1/4 Hard | H01 | 415 | 515 | |
| 1/2 Hard | H02 | 515 | 655 | |
| Hard | H04 | 620 | 760 | |
| Spring | H08 | 690 | 0 | |
Rolled Flat
| Temper Name | Temper Code | Tensile Strength (N/mm²) | Mill Limits | |
| Min | Max | |||
| Annealed | O61 | 275 | 345 |
Thickness: Width: |
| 1/4 Hard | H01 | 290 | 360 | |
| 1/2 Hard | H02 | 325 | 395 | |
| Hard | H04 | 415 | 485 | |
| Extra Hard | H06 | 460 | 525 | |
| Spring | H08 | 490 | 545 | |
Physical Properties
| Melting Point (Liquidis) | 1060°C |
| Melting Point (Solidus) | 1032°C |
| Density | 8.74696 gm/cu cm |
| Electrical Resistivity (Annealed) | 14.3634 ?? -cm @ 20°C |
| Electrical Conductivity (Annealed) | 0.07025 MegaSiemens /cm @ 20°C |
| Thermal Conductivity (Solutionized-Aged) | 57.14210526 W/m · °K @ 20°C |
| Coefficient of Thermal Expansion | 0.00001782°C (20-300°C) |
| Modulus of Elasticity (Tension) | 117200 MPa |
| Modulus of Rigidity | 44100 MPa |
For a full size version of product specifications, including chemical composition in both US and Metric units, please download the PDF.