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BYK

Adhesion - Hardness Tester Hoffman Scratch

Hoff­man Scratch Hard­ness Tester - Scrape Adh­e­sion Test The Hoff­man Scratch Hard­ness Tester was devel­oped for the com­par­a­tive eval­u­a­tion of scratch resis­tance and adh­e­sion of many types of coat­ings.
QUOTATION
INFORMATION
QUOTATION
INFORMATION
DESCRIPTION TECHNICAL DESCR.
DESCRIPTION

BYK GARDNER

Hoff­man Scratch
Hard­ness Tester

ScrapeAdh­e­sion Test

The Hoff­man Scratch Hard­ness Tester was devel­oped for the com­par­a­tive eval­u­a­tion of scratch resis­tance and adh­e­sion of many types of coat­ings.

  • Sim­ple pocket size tester
  • Ideal for field use and demon­s­tra­tions

This instru­ment con­sists of a four-wheeled car­ri­age, a scale arm gra­d­u­ated from 0-20 that is attached per­ma­nently to the car­ri­age in a coun­ter­poised con­di­tion about the pivot axis, and a scratch tool with a sharp cir­cu­lar rim mounted at 45° to the flat test sur­face.

Pro­ce­dure

To oper­ate, attach rid­ers to the scale arm at the num­bered posi­tions. The car­ri­age is held down firmly by hand and moved in the oppo­site direc­tion, to cause a trail­ing scratch. The large stan­dard rider loads 100 g per divi­sion, while the small rider loads 25 g per divi­sion. This small rider may be used for mak­ing low-range mea­sure­ments involv­ing small incre­ments of pres­sure, or it may serve as a vernier with the large rider in mak­ing more pre­cise medium-range mea­sure­ments.

Scratch Hard­ness
The force neces­sary to cut through the film to the sub­s­trate.

Adh­e­sion
The force required to scrape a path through the film, when the sty­lus begins its motion on an uncoated por­tion of the panel.

TECHNICAL DESCR.
BYK website
BYK Additives & Instruments
Systems to measure and analyse: Color & Appearance (Gloss meters, haze meters, orange peel and DOI meters) - Physical Properties such as abrasion, density, film thickness, hardness, drying time.....
This item belongs to the following categories (click to expand):
Prices are quoted in euro (taxes excluded) and apply in the Benelux (recycling fee included). They are subject to change without notice. We reserve the right to adjust pricing errors and to limit quantities.

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