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
Elements | Min (%) | Max (%) |
Cu | 60.00 | 62.00 |
Pb | 2.50 | 3.50 |
Sn | – | 0.20 |
Fe | – | 0.30 |
Al | – | 0.05 |
Ni | – | 0.30 |
Total Others | – | 0.20 |
Zn | Remainder |
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 |