The Micro hardness test differs from Rockwell testing in many ways.  First, you measure the size of the impression, not the depth of penetration.  While a Rockwell test uses forces from 15 kg to 150 kg, a microhardness test uses loads from 10 to 1000 grams.  Extensive surface prep is usually require when making a microhardness test.

 

A Macro hardness tester typically uses a Vickers diamond with loads of 1000 gf and above.

 

There are two types of diamonds used in micro hardness testing, Vickers and Knoop

 

Model:

ARS 10K

Manufacturer:

Type:

Vertical Capacity:

Throat Depth:

Loads:

Clark

Fully Automatic Micro Hardness Tester

3.5 Inches (95 mm)

4.5 Inches (115 mm)

1 gf to 50Kgf, depending on model

Model:

CM Series

Manufacturer:

Clark

Type:

Desktop Micro Hardness Tester

Vertical Capacity:

3.5 Inches (95 mm)

Throat Depth:

4.5 Inches (115 mm)

Loads:

1 gf to 2000 gf, depending on model

Model:

CAMS

Manufacturer:

Type:

Newage Hardness Testing

Computer Aided Measuring System  that can be added on to virtually any existing micro hardness tetser.

Model:

Manufacturer:

Type:

Loads:

HMVG20

Newage Hardness Testing

Desktop Micro Hardness Tester

1 gf to 2000 gf, depending on model

Model:

CV800

Manufacturer:

Clark

Type:

Macro Hardness Tester

Loads:

300 gf to 50 Kgf, depending on model

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