CW609N

CW609N, categorized as Free cutting brass, stands as a notably refined variation of 60/40 brass, recognized for its exceptional free cutting characteristics. Its application lies in the high-volume production of brass components necessitating topmost output and extended tool longevity. This is particularly pertinent in cases where no subsequent cold forming is essential following the machining process.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu57.0059.00
Pb3.504.20
Fe0.30
Sn0.30
Ni0.30
Al0.05
Total Others0.20
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO EN12164 (AS PER TEMPER R430)
Range From To UTS Min (N/mm²) PS Min Elongation Min (%) Hardness Min Hardness Max
Round (Dia) 2 40 430 250 10
Hex (A/F) 3 40 430 250 10
Square (A/F) 3 40 430 250 10
Rectangle (Thickness) 3 40 430 250 10
PHYSICAL PROPERTIES
Melting Point – Liquidus°F 1630
Melting Point – Solidus°F 1610
Densitylb/cu in. at 68°F 0.306
Specific Gravity 8.47
Electrical Conductivity% IACS at 68°F 28
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 71
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) 11.6
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 14000
Modulus of Rigidityksi 5300
FABRICATION PROPERTIES
Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended
Spot Weld Not Recommended
Seam Weld Not Recommended
Butt Weld Fair
Capacity for Being Cold Worked Poor
Capacity for Being Hot Formed Excellent
Machinability Rating 90

CW609N

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