Why is pig iron high in strength but brittle and brittle and high in strength?
There are four common mechanical properties: strength, hardness, plasticity and impact toughness.
Therefore, pig iron (actually called cast iron) is actually measured by several indexes.The brittleness you call actually refers to the plastic index, while strength is another indicator. Therefore, strength and plasticity can not be compared together. They each represent different properties..Therefore, the high strength and high brittleness "is not wrong.
In a word, strength is the index of resistance to fracture and deformation. Hardness is the index of abrasion resistance; plasticity is the tensile and bending property index; impact toughness is the index of resistance to shock. Together these four can evaluate the performance of steel.
