Chemical Engineering - Chemical Engineering Basics - Discussion

Discussion Forum : Chemical Engineering Basics - Section 1 (Q.No. 5)
All of the following alloying elements of steel increases hardness but sacrifice ductility, except
Answer: Option
No answer description is available. Let's discuss.
11 comments Page 1 of 2.

Ritik said:   6 months ago
Agree, Nickel is the correct answer.

Mala said:   10 months ago
Nickel: Increases strength and hardness without sacrificing ductility and toughness. It also increases resistance to corrosion and scaling at elevated temperatures when introduced in suitable quantities in high-chromium (stainless) steels.

Yahya said:   5 years ago
There are two things to discuss;

1)hardness 2) ductile.

Nickel alloy is the best option in comparison to others, nickel belongs to the transition metal and it is hard and ductile and its atomic number is 28.

Shah said:   5 years ago
Please explain the right answer.

PRANAYN said:   6 years ago
Nickel is silvery-white, Hard, malleable, and ductile metal. And It is of the iron group and it takes on a high polish. It is a fairly good conductor of heat and electricity. In its familiar compounds nickel is bivalent, although it assumes other valences. It also forms a number of complex compounds. Most nickel compounds are blue or green. Nickel dissolves slowly in dilute acids but, like iron, becomes passive when treated with nitric acid. Finely divided nickel adsorbs hydrogen.

Chromium metal lacks ductility and is susceptible to nitrogen embrittlement, and is not used as a structural metal.

Abhinanadan salagar said:   6 years ago
Here cr is used in steel to anti-corrosive element.

Ni is specific for ductility simple answer.

Labdhi said:   6 years ago
Nickel is hard and ductile. While Chromium is hard and brittle.

Irfan said:   6 years ago
Nickel is silver-white, hard metal. Chromium metal lack ductility.

Nadeem said:   7 years ago
But nickle is known for its ductility. I think answer should be Cr as it provide hardness when alloyed.

Manikandan said:   9 years ago
Nickel is a hard metal. Chromium metal is used for cement industry.

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