51. Hastelloy comprises of
52. Reduction in the grain size reduces the __________ of the material.
53. The 'bomb' in the bomb calorimeter is made of
54. Which of the following crystal structures characterises the ferritic stainless steel?
55. __________ is used for determining the tensile strength of steels.
56. Sheardising process is used for
57. Very high sulphur in pig iron makes
58. Which of the following has the highest compressive strength?
59. The range of Mho's scale of hardness is from
60. Purity of electrical grade aluminium should be ≥ __________ percent.
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