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C99720 Special Alloy Cast SPECIAL ALLOYS Special Alloys true false https://api.copper.org/alloys.xhtml/C99720
Chemical Composition
Elements
Cu(1) Pb Sn Zn Fe P Ni Al Bi Mn Si
(1) Cu + Sum of Named Elements 99.8% min.
Min (%) 54.0 1.5 18.0 0.6 5.0 1.0 2.0 11.0
Max (%) 59.0 0.05 2.0 24.0 1.0 0.05 6.0 1.4 3.0 14.0 0.05
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.5% Ext
(ksi)		 Elongation
(%)		 Brinell Hardness, 3000 kg load
* Measured at room temperature, 68°F (20°C).
As Sand Cast As Sand Cast M01 55 Typ
 30 Typ
 13 Typ
 130 Typ
Physical Properties

No physical properties for this alloy

Casting Characteristics

No casting characteristics for this alloy

Fabrication Properties
Technique Suitability
Soldering Good
Brazing Good
Oxyacetylene Welding Good
Machinability Rating 75
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum*
* Temperature is measured in Fahrenheit.
Stress Relief 700
Typical Uses

No information for this alloy

Applicable Specifications
Form Specific Sub-Form Application System Standard Description
As Sand Cast Valves ASTM B763/B763M COPPER ALLOY SAND CASTINGS FOR VALVE APPLICATIONS
Corrosion Properties

No Corrosion Properties Available.