Question: What is the principal difference between the,Rockwell Hardness Test and the Brinell Hardness Test? The units of force in the Brinell hardness equation is kg

What is the principal difference between the,Rockwell Hardness Test and the Brinell Hardness Test?
The units of force in the Brinell hardness equation is kg force (kgf), why do we use 9.8 kN ? What is the definition of kgf?
What type material is the Brale diamond penetrator used for?
Discuss the meaning of the parts of a Rockwell hardness value.
What size ball penetraters can be used with a Rockwell Test?
What size major loads are used with a Rockwell Test?
Discuss the selection of proper Rockwell scale.
Discuss the minimum thickness requirement of a Rockwell Test specimen.
How close to an edge can a Rockwell Test be made?
Discuss conversions of hardness testing values.
Based on table 2B of ASTM A370 what is the 'approximate tensile strength of the steel specimen (in MPa)?
What is the principal difference between

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