High-Leaded Tin Bronze UNS C93200

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
     Machinability
     Welding
     Heat Treatment

Introduction

High-leaded tin bronze UNS C93200 is a cast alloy of copper-tin-lead. The addition of nickel in the alloy improves the strength and ductility. UNS C93200 copper alloy is resistant to biofouling and corrosion.

The following datasheet provides the chemical composition and properties of UNS C93200.

Chemical Composition

The chemical composition of UNS C93200 copper alloy is given in the following table.

Element Content (%)
Cu 83
Pb 7
Sn 7
Zn 3

Physical Properties

The following table details the physical properties of UNS C93200 alloy.

Properties Metric Imperial
Density 8.93 g/cm3 0.323 lb/in³

Mechanical Properties

The mechanical properties of UNS C93200 copper alloy are shown in the following table.

Properties Metric Imperial
Elastic modulus 117 GPa 16969 ksi
Poisson's ratio 0.34 0.34
Hardness, Brinell 65 65
Tensile strength 240 MPa 34800 psi
Yield strength 125 MPa 18100 psi
Elongation at break 20.0% 20.0%
Machinability 70 70
Izod impact 8.00 J 5.90 ft.lb
Compressive strength 315 MPa 45700 psi
Fatigue strength 110 MPa 16000 psi

Thermal Properties

The following table outlines the thermal properties of the UNS C93200 alloy.

Properties Metric Imperial
Thermal expansion co-efficient (@0.0 – 100°C/32.0 - 212°F) 18.0 µm/m°C 10.0 µin/in°F
Thermal conductivity (@20°C/68°F) 59.0 W/mK 409 BTU in/hr.ft²°F

Other Designations

Equivalent designations to UNS C93200 copper alloy include:

  • ASTM B271
  • ASTM B30
  • ASTM B505
  • ASTM B584
  • ASTM B763
  • QQ C390
  • SAE 660
  • SAE J461
  • SAE J462

Fabrication and Heat Treatment

Machinability

UNS C93200 has a machinability rating of 70.

Welding

The preferred welding techniques for UNS C93200 copper alloy are soldering and brazing. Carbon arc welding, oxyacetylene welding, gas shielded arc welding and coated metal arc welding are not recommended for this alloy.

Heat Treatment

The stress relieving temperature of the UNS C93200 alloy is 260°C (500°F). It does not respond to heat treatment.


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