Related Questions

Ferric stainless steels compared to austenitic stainless steels
A Have lower corrosion resistance
B Are harder to fabricate
C Are less ductile and hence less suitable for cold pressing
D All of the above
Which of the following crystal structures characterises the austenitic stainless steel?
A Simple hexagonal
B Body centred cubic
C Face centred cubic
D None of these
Tensile strength of a mild steel specimen can be roughly predicted from following hardness test
A Brinell
B Rockwell
C Vickers
D None of the above
________ gives hardness to stainless steel.
A Zinc
B Lead
C Carbon
D Tin
Tensile strength of steel can be safely increased by
A Adding carbon up to 2.8%
B Adding carbon up to 6.3%
C Adding carbon up to 0.83%
D Adding small quantities of copper
Austenitic manganese steel used for making jaws of crushing machines contains about __________ percent manganese.
A 1.5-2
B 3.5-4.5
C 7-9
D 12-14
The process which improves the machinability of steels, but lowers the hardness and tensile strength is
A Normalising
B Full annealing
C Process annealing
D Spheroidising
The tensile strength of the welded joint for double fillet is (where s = Leg or size of the weld, $$l$$ = Length of weld and $${\sigma _{\text{t}}}$$ = Allowable tensile stress for weld metal)
A $$0.5\,{\text{s}}l{\sigma _{\text{t}}}$$
B $${\text{s}}l{\sigma _{\text{t}}}$$
C $$\sqrt 2 \,{\text{s}}l{\sigma _{\text{t}}}$$
D $$2\,{\text{s}}l{\sigma _{\text{t}}}$$
Stainless steel is usually made by alloying the steel with
A Copper and nickel
B Copper and chromium
C Chromium and nickel
D Manganese and copper
Stainless steel এ steel ছাড়া আর কী থাকে?
A chromium
B vanadium
C manganese
D nickel

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