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From ITAMCO:
Hardness Conversion is a simple app for converting between popular scales used to measure the hardness of non-austenitic steels. It is in conformance to ASTM E140-07. For no ads, purchase full version.Features: - Convert between popular Rockwell, Vickers and Knoop hardness scales. Available Scales: - HRC (Rockwell C Hardness Number 150 kgf) - HV (Vickers Hardness Number) - HBS (10-mm Standard Ball, 3000-kgf) - HBW (10-mm Carbide Ball, 3000-kgf) - HK (Knoop Hardness, Number 500-gf and Over) - HRA (A Scale, 60-kgf) - HRD (D Scale, 100-kgf) - HR 15-N (15-N Scale, 15-kgf) - HR 30-N (30-N Scale, 30-kgf) - HR 45-N (45-N Scale, 45-kgf) - Scleroscope Hardness Number - Brinell - Knoop - Vickers This app was developed by ITAMCO, please visit http://www.itamco.com for more information. Planned Updates: Conversion for Rockwell B Hardness Range, Nickel, High-Nickel Alloys, Cartridge Brass, Austenitic Stainless Steel Plate in Annealed Condition, Austenitic Stainless Steel Sheet, Copper, Alloyed White Irons, and Wrought Aluminum Products.