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Hardness Tester

High Performance Series

Model X-A*  Shore A Hardness- Normal rubber
Model X-D* Shore D Hardness- Hard rubber and plastics
Model X-C*  Asker C Hardness- Soft rubber and sponge
Model X-F* Asker F Hardness- Urethane foam, sponge
 and polystyrene foam

Model X Durometer Hardness Tester for Rubber and Plastic

F Type Durometer Hardness Testers use their own weight to determine hardness.
Asker F Type Durometer Hardness Testers use their own weight to determine hardness.

Asker Hardness testers feature portable design, ease of operation, non-destructive measurement and optional peak indicators.

The Asker High Performance series has an accuracy of  ±.75 point and is available in Type F for soft materials like sponge rubber and urethane foam.

Asker models are available in ASTM D 2240 durometer Types: Shore A Hardness, Shore D Hardness and Asker C Hardness durometer scales.

*Add 'P' to the model number to specify optional peak indicator, for example XP-A.   Type F hardness testers use their own weight to determine hardness.

Click here for durometer test blocks.

Model X hardness tester with
optional peak indicator

 


Model X Kit
 
Hardness Tester Selection
 
Durometer Standards
Type 
Standards
Measuring Force
Shore A
ASTM D-2240
1 kgf
Shore D 
ASTM D-2240
5 kgf
Asker C
JIS K-7312
1 kgf
     
Indentor Type
  

Type Shore D
Type Shore A
Type Asker C
Type Asker F
Cone point
Hard rubber and
plastics
Flat point
Normal rubber
Hemispherical
Soft rubber and
sponge
Flat surface Urethane
foam, sponge and
polystyrene foam
  
Also available with an extended
presser foot for Type A, D and C
 
Hardness Tester Operation

As the hardness tester is pressed against the sample, the material resistance force and indentor spring load balance. The depth of the indentor is measured, which provides a measure of the material's hardness. Values are based upon a 100 point scale (accuracy ±.75 point). However, as time elapses the indicator will "creep" back so that a reading taken a few seconds after the tester makes contact with the sample will be less than the peak reading. The optional peak indicator helps to more closely monitor the difference between peak and "creep" in hardness tests.