2.2.1.9 Key Substrate Considerations

2.2.1.9 Key Substrate Considerations

When selecting a material for a given application, it is critical to consider all aspects of operation and be cognisant of the potential impact of all foreseen conditions acting at their peak simultaneously. Not only will the substrate need to resist environmental factors and operational loading and forces, but it will also need to meet the production and processing requirements defined during the design and prototyping phases. The following are some of the core considerations for selecting a material:

  • Different substrates are being joined
  • The force distribution over the assembly (i.e. spot welding)
  • Differential thermal expansion coefficients
  • The chemical resistance of substrates
  • The temperature resistance of the substrates/joints
  • Preventing substrate or component damage (altering the characteristics of the substrate)

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