Lead-Bismuth Alloy

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Applications

Introduction

Lead bismuth alloys have significantly higher boiling points and act as excellent radiation shields. They do not readily react with air or water. These alloys do not exhibit age hardening and susceptibility to heat treatment throughout the range of limited solid solubility. However, fine wires of lead-bismuth alloys are susceptible to heat treatment, and they might exhibit effects comparable to those obtained for lead-antimony wires.

The following section will provide an overview of lead-bismuth alloy.

Chemical Composition

The chemical composition of lead-bismuth alloy is outlined in the following table.

Element Content (%)
Bismuth, Bi 55.5
Lead, Pb 44.5

Physical Properties

The following table shows the physical properties of lead-bismuth alloy.

Properties Metric Imperial
Density 10.44 g/cm3 0.377 lb/in3
Melting point 124°C 255.2°F

Mechanical Properties

The mechanical properties of lead-bismuth alloy are displayed in the following table.

Properties Metric Imperial
Tensile strength 44.1 MPa 6396.16 psi
Elongation at break ≤37.5% ≤37.5%
Brinell hardness 15 15

Thermal Properties

The thermal properties of lead-bismuth alloy are given in the following table

Properties Metric Imperial
Thermal conductivity 4 W/mK 27.7 BTU.in/hrft².°F

Applications

The following are the list of applications of lead-bismuth alloy:

  • Coolant in nuclear reactors
  • Hydrogen production
  • Spallation targets for non-fission neutron production.

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