alleryStart learning →Yield stress of mild steel (Fe 250) is:
A250 MPa
B2500 MPa
C250 MPa (where '250' refers to yield)
DNo yield
Answer & Solution
Correct answer: A. 250 MPa
Steel grades named by yield stress in MPa.
**Fe 250 (mild steel):** 250 MPa.
Fe 415, Fe 500, Fe 550 are HYSD (high-yield strength deformed) bars used in concrete.
Higher grade → less steel needed but more brittle.
Failure stress > yield stress.
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