CW506L

CuZn33 is an alloy that blends superb cold forming characteristics with solid mechanical strength. It also boasts excellent capabilities for hot forming, and it excels in soldering and brazing applications. Thanks to its exceptional deep drawing attributes, CuZn33 is often referred to as “deep-draw” brass.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu66.0068.00
Pb0.05
Fe0.05
Sn0.10
Ni0.30
Al0.02
Total Others0.10
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO EN12163 (AS PER TEMPER R350)
Range (mm) From To UTS Min (MPa) UTS Max (MPa) PS Min (MPa) Elongation Min (%) Hardness Min Hardness Max
Round (Dia) 1.5 75 350 430 170 23
Hex (A/F) 3 70 350 430 170 23
Square (A/F) 3 60 350 430 170 23
PHYSICAL PROPERTIES
Melting Point – Liquidus°F 1710
Melting Point – Solidus°F 1660
Density lb/cu in. at 68°F 0.306
Specific Gravity 8.47
Electrical Conductivity % IACS at 68°F 27
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 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 Poor
Machinability Rating 30

CW506L

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