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C87845 Copper-Silicon-Brass Cast BRASSES Copper-Silicon Alloys (Silicon Bronzes and Silicon Brasses) true true https://api.copper.org/alloys.xhtml/C87845
Chemical Composition
Elements
Cu(1) Pb Sn Zn Fe P Ni(2) Al As Cr Mn Sb Si
(1) Cu + Sum of Named Elements 99.5% min.
(2) Ni value includes Co.
Min (%) 75.0 0.03 2.5
Max (%) 78.0 0.02 0.10 Rem 0.10 0.06 0.20 0.09 0.015 0.015 0.10 0.015 2.9
Mechanical Properties *
Form Temper Temper Code YS-0.5% Ext
(ksi)		 Elongation
(%)		 Ultimate Tensile Strength in Shear
(ksi)
* Measured at room temperature, 68°F (20°C).
As Sand Cast As Sand Cast M01 18.5 Min
 38 Min
 54.000 Min
Physical Properties
Melting Point - Liquidus°F 1625
Melting Point - Solidus°F 1590
Densitylb/cu in. at 68°F 0.3
Specific Gravity 8.3
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 22
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) 10.31
Coefficient of Thermal Expansion 68-39210 to -6 power per °F (68 – 392°F) 10.31
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 10.41
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Casting Characteristics

No casting characteristics for this alloy

Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Good
Spot Weld Good
Seam Weld Good
Butt Weld Good
Capacity for Being Cold Worked Not Recommended
Capacity for Being Hot Formed Good
Machinability Rating 85
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties

No thermal properties for this alloy

Typical Uses

No information for this alloy

Applicable Specifications
Form Specific Sub-Form Application System Standard Description
As Sand Cast ASTM B584 COPPER ALLOY SAND CASTINGS FOR GENERAL APPLICATIONS
Ingot ASTM B30 COPPER BASE ALLOYS IN INGOT FORM
Corrosion Properties

No Corrosion Properties Available.