ASTM E140 : 2012 Title: Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness Pages: 25 Year: 2012 Publisher: American Society for Testing and Materials Availability: Within 1-2 working days