What is the effect of phosphorus and sulphur in cast irons ? #neetmcq #neetquestions #latestneetmcq - Study24x7
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121 followers study24x7 07 Sep 2021 11:53 AM study24x7 study24x7

What is the effect of phosphorus and sulphur in cast irons ?

#neetmcq #neetquestions #latestneetmcq

A

Induces brittleness

B

Increases strength

C

Destabilizes cementite

D

No effect

NEET/Medical NEET / Medical
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  • Edubabble LLP

    • The effect of phosphorus and sulphur in cast irons shows that increasing phosphorous from 0.45 to 2.58% in gray cast iron increases the amount of eutectic phosphide from 4.7 to 17.81%, weakens mechanical properties (tensile strength reduced from 297.5 to 184.1MPa, impact strength from 4.3 to 2.7J), increases hardness from 215.43 to 249.38 and lowers the eutectic.

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