Assertion: mild steel's carbon | /r/HasProperty | main alloying material
Facets:
value: for iron
type: PURPOSE
Source sentences:
text: Though carbon is the main alloying material for iron some other elements like Tungsten, chromium, manganese can also be used for the purpose.
text: Though carbon is the main alloying material for iron some other elements like Tungsten, chromium, manganese can also be used for the purpose.