Abrasion
 Adhesion
 Application
 Color/Gloss
 Density
 Dispersion
 Drum Handling
 Drying Time/Gelation
 Film Flaws
 Film Thickness
 Hardness
 Impact & Flexibility
 Lab Apparatus
 Measuring Instruments
 Moisture/Air/Temp.
 Optical Instruments
 pH & Conductivity
 Publications
 Surface Profile
 Surface Tension
 Viscosity
Home  >>  Products  >>  Adhesion  >>  Hoffman Scratch Hardness Tester

Hoffman Scratch Hardness Tester


GE Aircarft Engine Group Spec. E50TF61-S1; Naval Lab Spec. WS12858 Part 4.5.5 Hardness



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.




FEATURES TECHNICAL DATA PROCEDURE PRICE LIST
 

 

Features

top

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.

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

 

Technical Data

top
Technical Data
Dimensions: 11 x 1.5 x 1 in (28 x 3.8 x 2.5 cm)
Net Weight: 1.5 lbs (0.7 kg)
Shipping Weight: 4 lbs (1.8 kg)



Procedure

top

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.

 

Prices

top
Prices listed in US dollars and subject to change    For more info Contact Us or call 954-946-9454    Request a Quote
Item Number Item Prices

One large standard rider, One small rider and one extra scratching tool, Carrying case, and Operating instructions
PA-1610 Hoffman Scratch Tester $1,253.00

   


top

Call HAVE QUESTIONS?
    954.946.9454
Email PREFER TO EMAIL?
    gardner@gardco.com
  FIND PRODUCTS LEARN MORE ORDERING INFO ABOUT US
  By Category Email Registry How to Order Contact Info
  By Industry Trade Shows Request Quote History
  New Products Test Lab Info Order Form FAQ's
  Monthly Product Articles/Links Repairs/Service Policies




  © 2020 Paul N. Gardner, a BYK Instruments Company | Contact | Policies Facebook  YouTube  Blogger