HARDNESS TESTERS 

ASKER A

  • Rubber in general
  • Softer plastics
Has been used for wide applications since being standardized in the ISO¡@

ASKER C

  • Soft rubber
  • Urethane rubber
  • Sponge
  • Wound threads (yarn package)
  • Rolled films
  • Potter's clay (kaolin)
ASKER Model C is intended for hardness measurement of soft rubber, sponge, foamed elastomers, wound threads (yarn package), rolled films, potter's clay (kaolin), and other such soft materials.

ASKER CS

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  • Polystyrene foam

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This features larger indentor and a more strong  spring compared to ASKER C, thereby making it more suitable for polystyrene foam.

ASKER D

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  • Hard rubber
  • Plastics
Similar to ASKER Model A, this model is defined as 'Durometer Type D' as described in various domestic and international standards.  It is in widespread use for hardness measurement of plastics and hard rubber.

ASKER E

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ASKER F

  • Urethane foam
  • Sponge
  • Non-woven fabric
Exclusive type for foam materials, allowing measurement by placing the tester on the object of measurement. 

ASKER FP

  • Powder puff
In addition to Model F, Model FP is available for powder puff.

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HARDNESS TESTER SELECTION CHART

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COMPARISON BETWEEN VARIOUS HARDNESS DATA

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HARDNESS TESTERS USED
VARIOUS HARDNESS TEST METHODS
HARDNESS DATA EXPRESSION ACCORDING TO DIFFERENT STANDARDS

Standards

Method of Hardness Test Hardness Tester Used Hardness Data Expression of hardness value of 50 within 1 sec. (or immediately)

JIS K 6301-1975

Phisical Testing Methods for  Vulcanized Rubber

Spring type hardness test Type A 50Hs JIS A
Type C 50Hs JIS C

JIS K 6253-1993

Hardness testing Methods for Vulcanized Rubber

Durometer hardness test Type A durometer A 50
Type D durometer D 50

JIS K 7215-1986

Testing Methods for Durometer Hardness of Plastics

Durometer hardness test Type A durometer HDA 50
Type D durometer HDD 50

ASTM D2240-91

Standard Test Method for Ruvver Property-Durometer Hardness

Durometer hardness test Type A durometer A/50/A
Type D durometer D/50/1

ISO 7619-1986(E)

Rubber-Determination of indentation hardness by means of pocket hardness meters

Durometer hardness test Type A durometer A50/1 or A/50
Type D durometer D50/1 or D/50

ISO 868-1978(E)

Plastics-Determination of indentation hardness by means of a durometer

Durometer hardness test Type A durometer A/50/1
Type D durometer D/50/1

SRIS 0101-1986

Physical Testing Method for Expanded Rubber

Spring type hardness test Spring type hardness test Measured hardness and used tester type will be reported.

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LIST OF ASKER RUBBER HARDNESS TESTERS

Model Principal Standards Indentor Design (mm) Spring Load (g) Size & Shape of the presser foot (mm)  Dimensions W*D*H(mm) Weight (g)
Height Shape 0Degree 100Degree
A JIS K 6253
JIS K 7215
ASTM D 2240
ISO 7619
ISO 868
(Durometer Type A)

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2.50 35-Deg.

Truncated Cone 0.79

56 821 44x18 (rectangular) 57x30x76 200
D JIS K 6253
JIS K 7215
ASTM D 2240
ISO 7619
ISO 868
(Durometer Type D)

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2.50 30-Deg. Cone Tip Radius 0.1 0 4533 44x18(rectangular) 57x30x76 200
ASKER C SRIS 0101

The Society of Rubber Industry, Japan Standard

2.54 5.08 Diameter Hemisphere 55 855 44x18 (rectangular) 57x30x76 200
ASKER CS ASKER CS 2.54 10 Diameter Circular Cylinder 100 4500 50 Diameter (Circular) 50x50x76 250
ASKER F ASKER F 2.54 15 Diameter Circular Cylinder 100 200 50x37 (Oval) 50x37x81 300
ASKER FP ASKER FP 2.54 25.2 Diameter Circular Cylinder 55 455 80 Diameter (Circular) 80x80x81 500

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Catalog download

    886-2-2657 8688 ¡@   886-2-2658 5544     www.jyecheng.com.tw     jc95095@ms27.hinet.net
JYE CHENG CROWN TRADING CO., LTD
1F, NO. 65, LANE 68, YANG GUANG ST. TAIPEI, TAIWAN

 

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