material properties

The atomic radius of a hypothetical face-centered cubic (FCC) metal is $(\sqrt{2}/10)$ nm. The atomic weight of the metal is 24.092 g/mol. Taking Avogadro's number to be $6.023 \ti...

Ignoring the small elastic region, the true stress (σ) – true strain (ε) variation of a material beyond yielding follows the equation σ = 400ε^0.3 MPa. The engineering ultimate ten...

The loading and unloading response of a metal is shown in the figure. The elastic and plastic strains corresponding to 200 MPa stress, respectively, are

The true stress (in MPa) versus true strain relationship for a metal is given by $\sigma = 1020 \varepsilon^{0.4}$. The cross-sectional area at the start of a test (when the stress...

Engineering strain of a mild steel sample is recorded as $$0.100\% .$$ The true strain is

The relationship between true strain $$\left( {{\varepsilon _T}} \right)$$ and engineering strain $$\left( {{\varepsilon _E}} \right)$$ in a uniaxial tension test is given as

Ductility of material with work hardening

In descending order of magnitude, the thermal conductivity of $$(a)$$ Pure iron, $$(b)$$ liquid water, $$(c)$$ saturated water vapour, and $$(d)$$ aluminum can be arranged as

Which of the following materials requires the largest shrinkage allowance, while making a pattern for casting?

A test specimen is stressed slightly beyond the yield point and then unloaded. Its yield strength

In deep drawing of sheets, the values of limiting draw ratio depends on

Thermal conductivity is lower for

For wire drawing operation, the work material should essentially be