Find suppliers for this alloyC64780
C64780WroughtBRONZESCopper-Silicon Alloys (Silicon Bronzes and Silicon Brasses)TrueTruehttps://api.copper.org/CDA-API/alloys.xhtml/C64780
Chemical Composition
Element
Cu(1,2)PbSnZnNiCrMgMnSiTiZr
(1) Cu + Sum of Named Elements 99.5% min. (2) Cu value includes Ag.
Min (%)90.00.100.201.00.010.20
Max (%)0.022.02.53.50.010.011.00.90.010.01
Mechanical Properties*
Form
Temper
Temper Code
Tensile Strength
(ksi)		YS-0.2% Offset
Elongation
(%)		Vickers Hardness, 500 gm
Fatigue Strength**
(ksi)		Proportional Limit
(ksi)		Section Size
(in)
Flat Products1/2 HardH0274   Typ
65   Typ
15   Typ
160   Typ
62   Typ
Extra HardH06103   Typ
94   Typ
14   Typ
225   Typ
38   Typ
77   Typ
0.009
Extra SpringH10123   Typ
113   Typ
11   Typ
255   Typ
41   Typ
88   Typ
HardH0486   Typ
78   Typ
10   Typ
185   Typ
35   Typ
70   Typ
* Measured at room temperature, 68°F (20°C). ** Fatigue Strength: 100 x 106 cycles, unless indicated as [N] x 106.
Physical Properties
Melting Point - Liquidus°F1989
Melting Point - Solidus°F1954
Densitylb/cu in. at 68°F0.321
Specific Gravity8.9
Electrical Conductivity% IACS at 68°F48
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F116.2
Specific Heat CapacityBtu/ lb /°F at 68°F0.095
Modulus of Elasticity in Tensionksi11600
Modulus of Rigidityksi4400
Fabrication Properties
Technique Suitability
SolderingExcellent
BrazingGood
Gas Shielded Arc WeldingGood
Spot WeldGood
Capacity for Being Cold WorkedGood
Capacity for Being Hot FormedGood
Machinability Rating20
Fabrication Process Properties

No fabrication process properties for this alloy

    
Thermal Properties
Treatment Minimum* Maximum* Value*
* Temperature is measured in Fahrenheit.
Stress Relief482
Annealing842
Hot Treatment13821832
Typical Uses

No information available.

Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No information available.