Stainless Steel and Aluminum Casting

Jan 17, 2023

Investment casting is an excellent process for both stainless steel and aluminum casting, even though the two alloys are very different. Consider the following properties:

  • Weight vs. Strength – Steel is stronger than aluminum, but it weighs about three times as much. As a result, aluminum is a great option when the strength-weight ratio matters.
  • Workability – Stainless steel is less malleable and more challenging to work with than aluminum.
  • Welding – Aluminum is more difficult to weld than stainless steel.
  • Heat Resistance – Depending on the alloy, stainless steel can withstand significantly higher temperatures than aluminum, which softens at 400 degrees Fahrenheit.
  • Electric Conductivity – Stainless steel is a poor conductor of electricity, while aluminum offers very good conductivity.
  • Cost – Stainless steel is usually more costly than aluminum, but in some applications is well worth the additional expense to get its special properties.