Test X Replica Tape

Testex Replica Tape

Can be used in accordance with:

ISO DIS 8503 - 3

ASTM D 4417 – C

Whereas comparators allow the estimation of surface roughness, by both touch and sight, the Testex Tape allows the user to measure the peak-to-valley height of the profile and record it. Testex Tape consists of foam with a non-compressible backing. The foam side is rubbed into the surface providing a permanent mould of the profile. The Thickness Gauge is then used to measure the peak-to-valley height of a surface profile formed in Testex Tape. The Testex Tape range is available in two profile ranges. It is important that the tape grade chosen is reflective of the profile under measurement.
 

Technical Specifications

Coarse and X-Coarse

Range 20 - 50 microns 40 -115 microns

Dimensions 19mm x 54mm (nominal) test area test area test area test area

 

Test Method

Testex Tape: ASTM D4417 Method B

In summary, ASTM D 4417 Method C and NACE RP0287-95 require the appropriate tape to be rubbed onto the surface. The thickness of the tape, when the thickness of the backing has been subtracted, gives the peak-to-valley height of the surface.

Measurements should be made at an agreed series of locations, which characterise the surface.