# Numerical - Load stress factor, given BHN

Q.  What is the load stress factor for cast iron gear pair if BHN = 300?
- Published on 19 Oct 15

a. 1.89 N/mm2
b. 1.62 N/mm2
c. 1.44 N/mm2
d. 1.413 N/mm2

#### Discussion

• Krishna Murthy G   -Posted on 27 Mar 21
Mam why should we need to take 0.21 in the formula
• Padmanaban   -Posted on 09 Jul 20
I am more interested in learning the basics of the mechanical engineering. What to do get myself adverse on the same. And maximum different related fields also
• Padmanaban   -Posted on 09 Jul 20
I am more interested in learning the basics of the mechanical engineering. What to do get myself adverse on the same. And maximum different related fields also
• RAJA   -Posted on 30 Jan 17
Thank u very much Sravnthi.....
• Sravanthi   -Posted on 25 Sep 15
Load stress factor for cast iron pinion and gear is given by,
K = 0.21 [BHN / 100]2

Therefore, substituting the value of BHN = 300 we get,

K = 1.89 N/mm2

## ➨ Post your comment / Share knowledge

Enter the code shown above:

(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)