C26800

CuZn33 is a brass alloy that seamlessly blends exceptional cold forming capabilities with solid mechanical strength. It boasts favorable hot forming characteristics and excels in soldering and brazing applications. Thanks to its remarkable deep drawing properties, CuZn33 is often referred to as “deep-draw” brass.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu64.0068.50
Pb0.09
Fe0.05
Total Others0.30
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO ASTM B927 (AS PER TEMPER HO2)
Range (Inch) From To UTS Min (ksi) PS Min (ksi) Elongation Min (%) Hardness Min Hardness Max
Round (Dia) 0.059 0.500 53 33 10
0.500 1.000 48 30 13
1.000 2.953 43 28 15
Hexagon (A/F) 0.118 0.500 53 33 10
0.500 1.000 48 30 13
1.000 2.756 43 28 15
Square (A/F) 0.118 0.500 53 33 10
0.500 1.000 48 30 13
1.000 2.362 43 28 15
Rectangle (Thickness) 0.118 0.500 53 33 10
0.500 1.000 48 30 13
1.000 1.969 43 28 15
Range (Inch) From To UTS Min (ksi) PS Min (ksi) Elongation Min (%) Hardness Min Hardness Max
Round (Dia) 1.5 12 365 230 10
12 25 330 205 13
25 75 295 195 15
Hexagon (A/F) 3 12 365 230 10
12 25 330 205 13
25 70 295 195 15
Square (A/F) 3 12 345 170 10
12 25 310 115 20
25 50 275 105 20
Rectangle (Thickness) 3 12 345 170 10
12 25 310 115 20
25 50 275 105 20
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

C26800

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