CW604N

DESCRIPTION

CW604N are the standard materials for machining (machining index 100 %). These alloys are also particularly suitable for hot stamping when the forged parts are subsequently machined extensively. Is recommended for applications where cold working with little reduction such as knurling is used. The ductility of this material makes it particularly suitable for the manufacture of wires as well as rods and sections.

CHEMICAL COMPOSITION

Elements Min (%) Max (%)
Cu 62.00 64.00
Pb 0.10 0.80
Fe - 0.10
Sn - 0.20
Ni - 0.30
Al - 0.50
Total Others - 0.20
Zn Remainder

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

TYPICAL USES

  • Automotive
  • Builders Hardware
  • Consumer
  • Electrical
  • Fasteners
  • Industrial
  • Ordnance
  • Plumbing