CW603N

CW603N Free machining brass, resulting from the fusion of copper and zinc, exhibits the highest degree of machinability among all copper alloys, serving as the benchmark against which others are gauged. Renowned for its strength and corrosion resistance akin to steel, CW603N Brass stands as one of the premier copper alloys extensively employed in contemporary applications. Achieving precision in machining with CW603N Brass is a straightforward task. Despite its ductile character when in a softened state, CW603N Brass emerges as a robust material for manipulation, preserving its strength even under the most rigorous circumstances. The development of a delicate safeguarding “patina” distinguishes CW603N Brass; unlike steel and iron, it remains invulnerable to rust when exposed to atmospheric conditions. Thanks to its elevated density, CW603N Brass is especially well-suited for crafting substantial industrial components. The refined polished finish further adds to the appeal of CW603N Brass. This versatile material is accessible in an array of configurations, including Rounds, Flats, Squares, Hexagons, Shapes, and Hollows.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu60.0062.00
Pb2.503.50
Sn0.20
Fe0.30
Al0.05
Ni0.30
Total Others0.20
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO EN12164 (AS PER TEMPER R400)
Range (mm) From To UTS Min (N/mm²) PS Min (N/mm²) Elongation (%) Hardness Min Hardness Max
Round (Dia) 2 20 400 200 12
Hex (A/F) 2 25 400 200 12
Square (A/F) 2 25 400 200 12
PHYSICAL PROPERTIES
Melting Point – Liquidus°F 1650
Melting Point – Solidus°F 1630
Densitylb/cu in. at 68°F 0.307
Specific Gravity 8.5
Electrical Conductivity% IACS at 68°F 26
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 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 Fair
Capacity for Being Hot Formed Fair
Machinability Rating 100

CW603N

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