Most hard metals: chromium(Hits：
)
World Record Name: hardest metals: chromium
World record holder: Chrome
World record fields: the most hard metal
World Record rules: the hardest metal
World record number: 20120300022
World Record valid: to record was broken up.
World Record Witness: No. 008 to Carrying the Flag Certification Division
World Records Source: World record library to Carrying the Flag
World Record Certification date: March 21, 2012
World Record Details:
Most hard metals: chromium. Mohs hardness of about 8.5. For the metal in the world.
To challenge world record please E-mail : s@carryingtheflag.com or s@kangqi.org
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