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C68320 Wrought BRONZES Other Copper-Zinc Alloys true false https://api.copper.org/alloys.xhtml/C68320
Chemical Composition
Elements
Cu(1,2) Pb Sn Zn Fe P Ni(3) Al As Si
(1) Cu value includes Ag.
(2) Cu + Sum of Named Elements 99.5% min.
(3) Ni value includes Co.
Min (%) 59.0 0.02 0.05
Max (%) 65.0 0.25 0.50 Rem 0.30 0.20 0.20 0.09 0.16 0.50
Mechanical Properties *
Form Temper Temper Code Elongation
(%)		 Rockwell B scale Shear Strength
(ksi)		 Compressive Strength .1 in. set/in.
(ksi)		 Ultimate Tensile Strength in Shear
(ksi)
* Measured at room temperature, 68°F (20°C).
Die Forging As Hot Forged - Air Cooled M10 30 Min
60 Max		 70 Min
105 Max		 34.8 Typ
 293 Typ 49.3 Min
53.7 Typ
69.6 Max
Physical Properties
Melting Point - Liquidus°F 1633
Densitylb/cu in. at 68°F 0.304
Specific Gravity 8.41
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 56.4
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) 11.11
Coefficient of Thermal Expansion 68-39210 to -6 power per °F (68 – 392°F) 11.2
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 11.59
Specific Heat CapacityBtu/ lb /°F at 68°F 0.092
Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Fair
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Fair
Spot Weld Fair
Seam Weld Fair
Butt Weld Poor
Capacity for Being Cold Worked Fair
Capacity for Being Hot Formed Good
Forgeability Rating 75
Machinability Rating 70
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties

No thermal properties for this alloy

Typical uses
Product Category Product Reason Category Reason
Plumbing Enviornmentaly friendly Faucets and Plumbing Components
Valve Bodies, Faucets, Plumbing Components
Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No Corrosion Properties Available.