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C69220 Copper Zinc Alloy Wrought BRONZES Other Copper-Zinc Alloys true true https://api.copper.org/alloys.xhtml/C69220
Chemical Composition
Elements
Cu(1,2) Pb Sn Zn Fe P Ni(3) Mn Sb Si
(1) Cu value includes Ag.
(2) Cu + Sum of Named Elements 99.5% min.
(3) Ni value includes Co.
Min (%) 69.0 0.05 0.8 1.8
Max (%) 71.0 0.08 0.30 Rem 0.10 0.20 0.20 1.8 0.10 2.6
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.5% Ext
(ksi)		 Elongation
(%)		 Vickers Hardness, 500 gm
* Measured at room temperature, 68°F (20°C).
Flat Products 1/4 Hard H01 82 Min
84 Typ
85 Max
 46 Min
48 Typ
 140 Min
Rod 1/4 Hard H01 82 Min
84 Typ
85 Max
 46 Min
48 Typ
 30 Min
 140 Min
Physical Properties
Melting Point - Liquidus°F 1598
Melting Point - Solidus°F 1592
Densitylb/cu in. at 68°F 0.3
Specific Gravity 8.3
Electrical Conductivity% IACS at 68°F 9.5
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 18.02
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) 10.34
Coefficient of Thermal Expansion 68-39210 to -6 power per °F (68 – 392°F) 10.34
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 0
Specific Heat CapacityBtu/ lb /°F at 68°F 0.089
Modulus of Elasticity in Tensionksi 14900
Modulus of Rigidityksi 6092
Poisson's Ratio 0.32
Fabrication Properties
Technique Suitability
Forgeability Rating 95
Machinability Rating 78
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum*
* Temperature is measured in Fahrenheit.
Annealing 968
Hot Working Temperature 1148
Precipitation Treatment 932
Solution Treatment 1436
Stress Relief 770
Typical uses
Product Category Product Reason Category Reason
Automotive Automotive Parts
Electrical Electronic parts
Plumbing Drinking water Fixtures, Plumbing
Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No Corrosion Properties Available.