Find suppliers for this alloy C69750
C69750 Wrought BRONZES Other Copper-Zinc Alloys true false https://api.copper.org/alloys.xhtml/C69750
Chemical Composition
Elements
Cu(1,2) Pb Sn Zn Fe P Ni(3) Mn Si
(1) Cu value includes Ag.
(2) Cu + Sum of Named Elements 99.5% min.
(3) Ni value includes Co.
Min (%) 78.0 0.8 1.9
Max (%) 83.0 1.3 0.05 Rem 0.05 0.02 0.01 0.05 2.22
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.2% Offset
(ksi)		 Elongation
(%)		 Vickers Hardness, 3000 gm Section Size
(in)
* Measured at room temperature, 68°F (20°C).
Rod Soft Anneal O60 65 Min
68 Typ
 22 Min
36 Typ
 50 Typ
 105 Min
 >.020
Spring H08 102 Min
109 Typ
 87 Min
94 Typ
 8 Typ
 200 Min
 >.475
Spring H08 131 Min
138 Typ
 116 Min
119 Typ
 1 Typ
 260 Min
 <.315
Spring H08 109 Min
116 Typ
 94 Min
102 Typ
 5 Typ
 220 Min
 <.475
Wire Soft Anneal O60 65 Min
68 Typ
 22 Min
36 Typ
 50 Typ
 105 Min
 >.020
Spring H08 102 Min
109 Typ
 87 Min
94 Typ
 8 Typ
 200 Min
 >.475
Spring H08 131 Min
138 Typ
 116 Min
119 Typ
 1 Typ
 260 Min
 <.315
Spring H08 109 Min
116 Typ
 94 Min
102 Typ
 5 Typ
 220 Min
 <.475
Physical Properties
Melting Point - Liquidus°F 1724
Melting Point - Solidus°F 1562
Densitylb/cu in. at 68°F 0.311
Specific Gravity 8.6
Electrical Conductivity% IACS at 68°F 9.5
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 23
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) 11.1
Specific Heat CapacityBtu/ lb /°F at 68°F 0.091
Modulus of Elasticity in Tensionksi 15200
Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Fair
Oxyacetylene Welding Fair
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Fair
Spot Weld Good
Seam Weld Excellent
Butt Weld Excellent
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Excellent
Forgeability Rating 30
Machinability Rating 90
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum* Value*
* Temperature is measured in Fahrenheit.
Stress Relief 590
Annealing 1020
Typical uses
Product Category Product Reason Category Reason
Electrical Electrical Connectors Conductivity (Electrical) Electrical Conductivity
Electrical Connectors Forming Characteristics Formability
Electrical Pinions Conductivity (Electrical) Electrical Conductivity
Electrical Pinions Forming Characteristics Formability
Electronic Contacts Conductivity (Electrical) Electrical Conductivity
Electronic Contacts Forming Characteristics Formability
Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No Corrosion Properties Available.