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C64727 Copper Silicon Alloy MAX375 Wrought BRONZES Copper-Silicon Alloys (Silicon Bronzes and Silicon Brasses) true true https://api.copper.org/alloys.xhtml/C64727
Chemical Composition
Elements
Cu(1,2) Pb Sn Zn Fe Ni Ca Cr Mg Si
(1) Cu + Sum of Named Elements 99.5% min.
(2) Cu value includes Ag.
Min (%) 0.20 0.20 2.5 0.002 0.50
Max (%) Rem 0.01 0.8 1.0 0.25 3.0 0.01 0.01 0.20 0.8
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.2% Offset
(ksi)		 Elongation
(%)		 Vickers Hardness, 500 gm
* Measured at room temperature, 68°F (20°C).
Flat Products Precipitation or Spinodal Heat-treated, 1/4 Hard and Thermal Stress Relieved TR01 96 Min
138 Max
 77 Min
138 Max		 1 Min
 170 Min
290 Max
Physical Properties
Melting Point - Liquidus°F 1985
Melting Point - Solidus°F 1920
Densitylb/cu in. at 68°F 0.32
Specific Gravity 8.87
Electrical Conductivity% IACS at 68°F 40
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 102
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 95
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 19200
Fabrication Properties
Technique Suitability
Soldering Good
Brazing Fair
Oxyacetylene Welding Fair
Gas Shielded Arc Welding Good
Coated Metal Arc Welding Fair
Spot Weld Good
Seam Weld Good
Butt Weld Fair
Capacity for Being Cold Worked Good
Capacity for Being Hot Formed Good
Forgeability Rating 70
Machinability Rating 20
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum* Maximum*
* Temperature is measured in Fahrenheit.
Annealing 660 1200
Hot Working Temperature 1557 1755
Typical Uses

No information for this alloy

Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No Corrosion Properties Available.