Question:
Quenching medium with the highest severity effect
Quenching medium with the highest severity effect
Show Hint
Brine > Water > Oil > Air. Saltwater is the "fastest" common way to cool steel.
Updated On: Jul 4, 2026
- Brine
- Soluble oil
- Liquid salts
- Air
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Concept Quenching severity (H-factor) refers to the ability of a medium to extract heat from a hot metal part.
Step 2: Meaning Different media have different thermal conductivities and boiling characteristics that affect the cooling rate.
Step 3: Analysis Water is a faster quenchant than oil. However, Brine (water with approximately 5% to 10% salt) is even faster because the salt crystals break up the insulating vapor blanket that forms around the part.
Step 4: Conclusion
Due to its ability to maintain direct contact with the metal and extract heat more rapidly than plain water, oil, or air, Brine has the highest quenching severity. Final Answer: (A)
Step 2: Meaning Different media have different thermal conductivities and boiling characteristics that affect the cooling rate.
Step 3: Analysis Water is a faster quenchant than oil. However, Brine (water with approximately 5% to 10% salt) is even faster because the salt crystals break up the insulating vapor blanket that forms around the part.
Step 4: Conclusion
Due to its ability to maintain direct contact with the metal and extract heat more rapidly than plain water, oil, or air, Brine has the highest quenching severity. Final Answer: (A)
Was this answer helpful?
0
0
Top AP ECET Metallurgical Eng Metallurgical Engineering Questions
- The crushing efficiency of a crusher is the ratio of
- Grindability of a material does not depend upon its
- Copper deposits are found in India at the following location
- Electrochemical corrosion can occur only if _____________ is present in contact with the metal.
- Hoop's process is predominantly used for the electrolytic refining of
View More Questions
Top AP ECET Metallurgical Eng Heat Treatment Processes Questions
- Improvement of machinability in high carbon steel is obtained by
- Pearlite in a steel is formed from
- The product of diffusionless transformation is
- The characteristics of martensite formation does not include
- Martensite in a mild steel is obtained by
View More Questions
Top AP ECET Metallurgical Eng Questions
- Order of the matrix $\begin{bmatrix} 1 & 6 \\ 2 & 0 \\ 7 & -1 \end{bmatrix}$ is
- If two rows (or columns) of a determinant of order 3 are identical then the value of determinant is
- Co-factor of -4 in $\begin{vmatrix} 1 & 2 & 3 \\ -4 & 3 & 6 \\ 2 & -7 & 9 \end{vmatrix}$ is
- The Matrix $\begin{bmatrix} a & h & g \\ h & b & f \\ g & f & c \end{bmatrix}$ is
- If $A = \begin{bmatrix} 0 & 0 & 1 \\ 0 & 1 & 0 \\ 1 & 0 & 0 \end{bmatrix}$ then $(A^{-1}) =$
View More Questions