Which of the following ranges is the recommended minimum ferrite content of the weld metal needed to prevent cracking?

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The most common measure of weldability and susceptibility to hot cracking of austenitic stainless steels is the ferrite content of the weld metal.

Which of the following ranges is the recommended minimum ferrite content of the weld metal needed to prevent cracking?
A . 1%-10%
B . 5%-20%
C . 8%-18%
D . 15%-20%

Answer: C