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C53800 Wrought BRONZES Copper-Tin-Lead-Phosphorus Alloys (Leaded Phosphor Bronzes) true false https://api.copper.org/alloys.xhtml/C53800
Chemical Composition
Elements
Cu(1,2) Pb Sn Zn Fe Ni(3) Mn
(1) Cu + Sum of Named Elements 99.8% min.
(2) Cu value includes Ag.
(3) Ni value includes Co.
Min (%) 0.40 13.1
Max (%) Rem 0.6 13.9 0.12 0.030 0.03 0.06
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 Spring H08 131 Min
135 Typ
 116 Min
123 Typ
 1 Min
 260 Typ
 <.100
Spring H08 131 Min
135 Typ
 116 Min
123 Typ
 3 Min
 260 Typ
 <.315
Wire Spring H08 138 Min
145 Typ
 123 Min
135 Typ
 3 Min
 280 Typ
 <.100
Spring H08 67 Min
73 Typ
 29 Min
36 Typ
 50 Min
 100 Typ
 <.315
Physical Properties
Melting Point - Liquidus°F 1796
Melting Point - Solidus°F 1472
Densitylb/cu in. at 68°F 0.314
Specific Gravity 8.7
Electrical Conductivity% IACS at 68°F 9
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 35
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) 10.6
Specific Heat CapacityBtu/ lb /°F at 68°F 0.086
Modulus of Elasticity in Tensionksi 12800
Fabrication Properties
Technique Suitability
Soldering Good
Brazing Fair
Oxyacetylene Welding Fair
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Fair
Seam Weld Good
Butt Weld Good
Capacity for Being Cold Worked Good
Capacity for Being Hot Formed Poor
Forgeability Rating 20
Machinability Rating 80
Common Fabrication Processes
  • Forming
  • Machining
Thermal Properties
Treatment Minimum* Value*
* Temperature is measured in Fahrenheit.
Stress Relief 540
Annealing 1200
Typical uses
Product Category Product Reason Category Reason
Industrial Screw Machine Parts Machining Characteristics Machinability
Spring Contacts Forming Characteristics Formability
Spring Contacts Mechanical Properties Strength
Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No Corrosion Properties Available.