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What_is_the_scratch_hardness_of_steel?$
1.
What_is_the_scratch_hardness_of_steel?$
A.
3 Mohs
B.
5.5 Mohs
C.
6.5 Mohs
D.
8 Mohs
Answer» D. 8 Mohs
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Scratch hardness is useful for coatings.$
What_is_the_scratch_hardness_of_steel?$
Sclerometer_uses_a_harden_steel_ball_as_an_indenter.
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