Engineering Materials
Steel contains

Alloying elements like chromium, tungsten nickel and copper
80% or more iron
Elements like phosphorus, sulphur and silicon in varying quantities
50% or more iron

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Engineering Materials
Which of the following statement is true about brittle fracture?

Cup and cone formation is characteristic for brittle materials
High temperature and low strain rates favour brittle fracture
Brittle fracture is always preceded by noise
Many metals with hexagonal close packed (H.C.P) crystal structure commonly show brittle fracture

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