C27451
C27451 is a lead-free material designed for applications involving drinking water. It’s suitable for scenarios without high mechanical stresses. This ductile alloy is well-matched for processes like blanking, riveting, bending, hot forging and pressing, hot heading, as well as for manufacturing large nuts & bolts and brazing rods.
CHEMICAL COMPOSITION
| Elements | Min (%) | Max (%) |
| Cu | 61.00 | 65.00 |
| Pb | – | 0.25 |
| Fe | – | 0.35 |
| Total Others | – | 0.50 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO ASTM B124
Mechanical property requirement, if any, are to be established by agreement between the manufacturer and the purchaser.
| PHYSICAL PROPERTIES | |
| Melting Point – Liquidus°F | 1680 |
| Melting Point – Solidus°F | 1650 |
| Densitylb/cu in. at 68°F | 0.31 |
| Specific Gravity | 8.44 |
| Electrical Conductivity% IACS at 68°F | 22.8 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 67 |
| Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) | 11.4 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 15000 |
| Modulus of Rigidityksi | 5500 |
| Magnetic Permeability | 1 |
| FABRICATION PROPERTIES | |
| Technique | Suitability |
| Soldering | Excellent |
| Brazing | Excellent |
| Oxyacetylene Welding | Good |
| Gas Shielded Arc Welding | Fair |
| Coated Metal Arc Welding | Not Recommended |
| Spot Weld | Good |
| Seam Weld | Not Recommended |
| Butt Weld | Good |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Excellent |
| Forgeability Rating | 95 |
