Engineering Materials
Admiralty gun metal contains

63 to 67% nickel and 30% copper
Iron scrap and zinc
Alloy of tin, lead and cadmium
88% copper, 10% tin and rest zinc

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Engineering Materials
Inconel contains

68% nickel, 29% copper and 3% other constituents
80% nickel and 20% chromium
80% nickel, 14% chromium and 6% iron
65% nickel, 15% chromium and 20% iron

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Engineering Materials
Stress relaxation is the phenomenon

Stress reduces on increasing load
In which parts are not loaded
In which deformation tends to loosen the joint and produces a stress reduced
In which stress remains constant on increasing load

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