4 ms·
Not true. Steel is about 5.5 - 6.3 and Iron is around 4.5 on Moh's Hardness Scale. Higher numbers are harder.
by elektromekatron 11y ago
Not true.
Steel is about 5.5 - 6.3 and Iron is around 4.5 on Moh's Hardness Scale. Higher numbers are harder.