Find suppliers for this alloyC78200
Chemical Composition
Element
Cu(1,2)PbZnFeNi(3)Mn
(1) Cu + Sum of Named Elements 99.5% min. (2) Cu value includes Ag. (3) Ni value includes Co.
Min (%)63.01.57.0
Max (%)67.02.5Rem0.359.00.50
Mechanical Properties*
Form
Temper
Temper Code
Tensile Strength
(ksi)
YS-0.5% Ext
(ksi)
Elongation
(%)
Rockwell B scale
Rockwell F scale
Rockwell 30T scale
Shear Strength
(ksi)
Torsion Modulus
(ksi)
Ultimate Tensile Strength in Shear
(ksi)
Section Size
(in)
Flat Products1/2 HardH0269   Typ
58   Typ
12   Typ
78   Typ
69   Typ
47   Typ
0.04
1/4 HardH0162   Typ
42   Typ
24   Typ
65   Typ
63   Typ
44   Typ
0.04
3/4 HardH0378   Typ
63   Typ
5   Typ
84   Typ
72   Typ
51   Typ
0.04
Extra HardH0691   Typ
76   Typ
3   Typ
90   Typ
75   Typ
58   Typ
0.04
HardH0485   Typ
73   Typ
4   Typ
87   Typ
74   Typ
54   Typ
6.4   Typ
0.04
Nominal Grain Size 0.015 mmOS01559   Typ
27   Typ
32   Typ
85   Typ
43   Typ
0.04
Nominal Grain Size 0.035 mmOS03553   Typ
23   Typ
40   Typ
78   Typ
40   Typ
0.04
SheetWelded, Drawn, and Stress Relieved from Half Hard, TubeWR0278   Typ
63   Typ
5   Typ
51   Typ
0.04
WR0269   Typ
58   Typ
12   Typ
47   Typ
0.04
WR0285   Typ
73   Typ
4   Typ
54   Typ
0.04
WR0253   Typ
23   Typ
40   Typ
40   Typ
0.04
WR0262   Typ
42   Typ
24   Typ
44   Typ
0.04
WR0259   Typ
27   Typ
32   Typ
43   Typ
0.04
WR0291   Typ
76   Typ
3   Typ
58   Typ
0.04
* Measured at room temperature, 68°F (20°C).
Physical Properties
Melting Point - Liquidus°F1830
Melting Point - Solidus°F1780
Densitylb/cu in. at 68°F0.314
Specific Gravity8.69
Electrical Conductivity% IACS at 68°F10.9
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F28
Coefficient of Thermal Expansion 68-21210⁻⁶ per °F (68 – 212°F)10.3
Specific Heat CapacityBtu/ lb /°F at 68°F0.09
Modulus of Elasticity in Tensionksi17000
Modulus of Rigidityksi6400
Fabrication Properties
Technique Suitability
SolderingExcellent
BrazingGood
Oxyacetylene WeldingNot Recommended
Gas Shielded Arc WeldingNot Recommended
Coated Metal Arc WeldingNot Recommended
Spot WeldNot Recommended
Seam WeldNot Recommended
Butt WeldFair
Capacity for Being Cold WorkedGood
Capacity for Being Hot FormedPoor
Machinability Rating60
Fabrication Process Properties

No fabrication process properties for this alloy

    
Thermal Properties
Treatment Minimum* Maximum*
* Temperature is measured in Fahrenheit.
Annealing9301150
Typical uses
Product Category Product Reason Category Reason
ConsumerKey BlanksAppearanceColor
Key BlanksMachining CharacteristicsMachinability
Key BlanksMechanical PropertiesModerate to High Strength
Watch PartsAppearanceColor
Watch PartsMachining CharacteristicsMachinability
Watch PartsMechanical PropertiesModerate Strength
Watch PlatesAppearanceColor
Watch PlatesMachining CharacteristicsMachinability
Watch PlatesMechanical PropertiesModerate Strength
Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No information available.