Assertion: annealing | /r/HasProperty | applied to cast iron
Facets:
value: to achieve greater toughness
type: PURPOSE
Source sentences:
text: Tempering is a heat treatment technique applied to ferrous alloys, such as steel or cast iron, to achieve greater toughness by decreasing the hardness of the alloy.
text: Tempering is a heat treatment technique applied to ferrous alloys, such as steel or cast iron, to achieve greater toughness by decreasing the hardness of the alloy.