Technical Resources

HARDNESS TESTING CHARTS:

Cylindrical Correction Chart

Hardness Conversion Chart - Rockwell "B" Hardness Range - A hardness conversion chart for soft materials that includes Regular Rockwell, Superficial Rockwell, Knoop, Brinell, Tensile Strength, and Microficial.

Hardness Conversion Chart - Rockwell "C" Hardness Range - A hardness conversion chart for hard materials that includes Regular Rockwell, Superficial Rockwell, Vickers, Knoop, Brinell, Tensile Strength and Microficial.

Hardness vs Minimum Thickness Chart

Rockwell Hardness Scale - A handy hardness scale chart that includes indenter needed, minor and major load force required and the typical applications for each scale.

LEEB DYNAMIC IMPACT:

Leeb Dynamic Impact Device -A chart showing the specifics of each Leeb dynamic impact device or probe.

NIST National Institute of Standards and Technology 

ASTM American Society for Testing and Materials

The Wilson Rockwell Hardness Testers we refurbish were manufactured by Wilson Instruments. Wilson Instruments is owned by Instron, a division of ITW.