CW604N

CW604N takes the crown as the standard for machining, scoring a perfect 100% on the machining index. These alloys are equally adept at hot stamping, especially when the forged components undergo extensive post-forging machining. It’s the top choice for applications requiring minimal cold working, such as knurling. Plus, its remarkable ductility makes it the ideal material for crafting wires, rods, and sections.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu62.0064.00
Pb0.100.80
Fe0.10
Sn0.20
Ni0.30
Al0.50
Total Others0.20
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO EN1652 (AS PER TEMPER R370)
Range (mm) From To UTS Min (N/mm²) UTS Max (N/mm²) PS Min Elongation Min (%) Hardness Min (HRB) Hardness Max (HRB)
Round (Dia) 1.5 6 370 440 19
PHYSICAL PROPERTIES
Melting Point – Liquidus°F 1700
Melting Point – Solidus°F 1650
Density lb/cu in. at 68°F 0.306
Specific Gravity 8.47
Electrical Conductivity % IACS at 68°F 26
Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F 67
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) 11.3
Specific Heat Capacity Btu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tension ksi 15000
Modulus of Rigidity ksi 5600
FABRICATION PROPERTIES 
Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene Welding Fair
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Not Recommended
Spot Weld Fair
Seam Weld Not Recommended
Butt Weld Fair
Capacity for Being Cold Worked Good
Capacity for Being Hot Formed Poor
Machinability Rating 60

CW604N

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