CW508L

CW508L, commonly known as yellow brass, boasts a copper content of no less than 62%. Within the realm of cold forming processes, CuZn37 takes center stage as the primary brass alloy. While other brasses with reduced zinc content might exhibit improved cold forming properties, CuZn37 maintains its status as the most widely employed alloy for several compelling reasons.

On one hand, its cost-effectiveness is undeniable, as zinc is more economically viable compared to copper. Additionally, the forming characteristics of this alloy align seamlessly with the requirements of numerous applications. As a result, CW508L stands as a reliable and versatile choice for a wide range of cold forming needs.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu62.0064.00
Pb0.10
Fe0.10
Sn0.10
Ni0.30
Al0.05
Total Others0.10
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO EN12165 (AS PER TEMPER H070)
Range (mm) From To UTS Min PS Min Elongation Min Hardness Min (HB) Hardness Max (HB)
Round (Dia) 8 75 70 170
Hex (A/F) 8 70 70 170
Square (A/F) 8 60 70 170
PHYSICAL PROPERTIES
Melting Point – Liquidus°F 1680
Density lb/cu in. at 68°F 0.305
Specific Gravity 8.44
Electrical Conductivity % IACS at 68°F 27.6
Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F 67
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) 11.4
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 Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Not Recommended
Spot Weld Good
Seam Weld Not Recommended
Butt Weld Good
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Fair
Machinability Rating 35

CW508L

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