Mechanical Engineering - Engineering Materials - Discussion

Both are 80% of nickel.

What is nimonic?

Nimonic is a registered trademark of Special Metals Corporation that refers to a family of nickel-based high-temperature low creep super alloys. Nimonic alloys typically consist of more than 50% nickel and 20% chromium with additives such as titanium and aluminium.

The main use is in gas turbine components and extremely high performance reciprocating internal combustion engines. The Nimonic family of alloys was first developed in the 1940s by research teams at the Wiggin Works in Hereford, England, in support of the development of the Whittle jet engine.

Inconel having nickel is 80 and nichrome having nickel is 65.

In nimonic 80%ni, 20%cr.

In conel ni 88%, Cr 8%, Fe 4%.

Chemical Composition of Inconel 718.

Element ----------- Percentage.
Silicon ----------- 0.35 max.
Chromium ----------- 17-21.
Nickel ----------- 50-55.
Molybdenum ----------- 2.80-3.30.

Nimonic alloys typically consist of more than 50% nickel and 20% chromium.

I think Answer B) Less is right.

What is inconal?

Less is correct answer.

Inconel is the Ni base alloy, that contain 60% Ni, 30% Cr, 9 % Fe and 1% other alloy.

Highly corrosive material and that is use for nuclear application.