Why is the 18 yellow “D” casting crumbling or brittle?
• “D” or Deox alloys usually will have silicon in them to help casters reduce oxidation and porosity. However, these deoxidizers will generally increase the metals temper, making them slightly harder. If the metal is over-heated, this will make metal harder to the point of brittleness. Remember Hoover does custom casting and specializes in unusual colors and metals.
