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C87900 Copper Silicon Cast BRASSES Copper-Silicon Alloys (Silicon Bronzes and Silicon Brasses) true false https://api.copper.org/alloys.xhtml/C87900
Chemical Composition
Elements
Cu Pb Sn Zn Fe P Ni Al As Mn S Sb Si
Min (%) 63.0 30.0 0.8
Max (%) 0.25 0.25 36.0 0.40 0.01 0.50 0.15 0.05 0.15 0.05 0.05 1.2
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.2% Offset
(ksi)		 Elongation
(%)		 Rockwell B scale Charpy V-Notch Impact Strength
(ft-lbs)
* Measured at room temperature, 68°F (20°C).
As Die Cast As Pressure Die Cast M04 70 Typ
70 Typ
 35 Typ
 25 Typ
25 Typ
 70 Typ
 50 Typ
50 Typ
Physical Properties
Melting Point - Liquidus°F 1700
Melting Point - Solidus°F 1650
Densitylb/cu in. at 68°F 0.308
Specific Gravity 8.5
Electrical Conductivity% IACS at 68°F 15
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 15000
Casting Characteristics
Casting Attribute Level
Casting Yield High
Drossing High
Effect of Section Size Medium
Fluidity Medium
Gassing Low
Patternmakers Shrinkage inches per inch 3/16
Shrinkage in Solidification Medium
Fabrication Properties
Technique Suitability
Soldering Good
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended
Machinability Rating 80
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties
Treatment Value* Time**
* Temperature is measured in Fahrenheit. ** Time is measured in minutes.
Stress Relief 500
Solution Treatment 0
Typical Uses

No information for this alloy

Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No Corrosion Properties Available.