Balanced Beam Scrape and Mar Tester

Balanced Beam Scrape and Mar Tester

Used to perform scrape adhesion and mar resistance (scratch hardness) tests of coatings and surfaces of various materials.

For differentiating the degree of adhesion of coatings to substrates
Provides relative ratings for a series of coated panels

This instrument consists of a pivoted beam with a 45° stylus holder, weight post and holder for supporting the total test load mounted on one end. On the other end of the beam is a counterweight. A cam is rotated to lower and raise the stylus and a sample bed mounted on ball bearings is used to move the test panel against the stationary stylus.

Standards:

ASTM	D2197	D2248	D2454	D5178
FTMS	141a, Method 6303.1
General Electric Company Spec.	F50TF7-S1
Military Spec.	MIL-P-7788A

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