Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress.

Non-ferrous metals and hard steels do not exhibit a definite yield poi

1.	Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress.
A.	ultimate
B.	yield point
C.	proof
D.	none of these
Answer» D. none of these