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Pull-Off Adhesion Tester

Pull-Off Adhesion Tester

Product Code:Elcometer 506


Need more Info? (514) 354-2511 - 1-800-463-4363

Product Description
The Elcometer 506 are lightweight, portable and easy-to-use adhesion testers available in analogue or digital gagues and are suitable for measuring the pull-off adhesion of coatings up to 50MPa (7250psi) either on-site, or in the laboratory.

The design of the Elcometer 506 adhesion testers ensures that a uniform force can be easily applied throughout the range by smoothly rotating the gauge's crank handle, ensuring repeatable results to an accuracy of ±1%.

The Elcometer 506 adhesion tester's quick connect coupling allows the simple attachment of 14.2mm, 20mm or 50mm diameter dollies which, together with a wide range of accessories, allows coating adhesion testing on flat, curved, thick and thin substrates - including metal, wood, concrete and other fibrous materials.

The Elcometer 506 test head (actuator) has been designed to be small, ergonomic and lightweight – ideal for single handed testing of coating adhesion even in awkward or confined spaces.

Safe adhesion testing on vertical surfaces has also been considered. Using the magnetic clamp accessory the actuator is held securely - preventing accidental damage to the surrounding areas.

 

Fonctions
Powerful
  • Suitable for adhesion testing on metal, wood, concrete and other substrates
  • Rugged & lightweight - ideal for frequent testing
  • Smooth load application up to 50 MPa (7250 psi)
Flexible
  • Easy to use hand-held design
  • Ideal for adhesion tests in the laboratory and the field
  • 14.2, 20 and 50 mm (0.56, 0.76 & 1.96”) diameter reusable dollies
  • Measures adhesion on small, curved and flat surfaces
Accurate
  • Measurement range up to 50 MPa (7250 psi) with an accuracy of ±1% of full scale
Durable
  • Sealed, heavy duty and impact resistant
  • Dust and waterproof equivalent to IP65
  • Suitable for use in harsh environments

 

Testing coatings on concrete & low bond strength substrates
When testing coatings on low bond strength substrates such as concrete, wood or other fibrous materials, a larger surface area of dolly is required to improve accuracy, repeatability and reproducability.

The Elcometer 506 Concrete Adhesion Tester can be supplied as a kit or with individual 50mm accessory items (skirt, dolly, cutter) which can be added to existing Elcometer 506 gauges.

 

How to Prevent Adhesive and Cohesive Failures
Preparing the surface and dolly
  • Select an appropriate test area which is flat and has sufficient test area to attach the adhesion gauge.
  • Abrade the dolly and surface, clean both to remove any dust - minimising the risk of an ‘adhesive’ failure.
Fixing the dolly
  • Mix the adhesive correctly and apply a uniform adhesive film over the entire dolly face.
  • Test Standards require that the dolly is pulled off perpendicularly to the test surface. The dolly must therefore be adhered on to a prepared flat test surface (see images above). Apply an even pressure to the dolly to ensure that the dolly face is parallel to the test surface.
  • Remove any excess adhesive from around the dolly and allow to fully cure. Tape maybe required when applying dollies to vertical surfaces during the cure process.
  • If required, once the dolly has fully cured, score the coating around the dolly using the dolly cutter provided.
  • Attach the gauge actuator to the dolly and begin test.
Assessment of the Adhesion Test
For a valid pull test the coating must cover at least 50% of the area of the dolly face. If the glue fails and no coating is present on the dolly, or it covers less than 50% of the dolly face area, the pull-test is invalid and should be repeated.

When the coating has failed within the layer leaving the same coating on both the dolly and the test panel it is known as a "cohesive failure".

"Adhesive failures" occur when either the coating has failed at the interface with another coating (leaving a coating on the dolly and another coating on the substrate), or when the coating has failed at the substrate (leaving the coating on the dolly and the substrate is bare).
NOTE: If the glue fails at a value above the specification then it can be reported that the adhesion exceeded the specification for this individual test.

 

Specifications
Part Number Description
F506-20A Elcometer 506 Analogue Adhesion Tester Kit; 20mm
F506-20AC Elcometer 506 Analogue Adhesion Tester Kit; 20mm - Certified
F506-20D Elcometer 506 Digital Adhesion Tester Kit; 20mm
F506-20DC Elcometer 506 Digital Adhesion Tester Kit; 20mm - Certified
F506-50A Elcometer 506 Analogue Adhesion Tester Kit; 50mm
F506-50AC Elcometer 506 Analogue Adhesion Tester Kit; 50mm - Certified
F506-50D Elcometer 506 Digital Adhesion Tester Kit; 50mm
F506-50DC Elcometer 506 Digital Adhesion Tester Kit; 50mm - Certified
 
Accuracy ±1% of full scale
Pressure Rating 26 MPa (3800 psi)
  14.2mm (0.56”) Dolly 20mm (0.76”) Dolly 50mm (1.96”) Dolly
Operating Range 4 to 50 MPa (600 to 7200 psi) 2 to 25 MPa (300 to 3600 psi) 0.3 to 4 MPa (50 to 580 psi)
Scale Resolution Analogue: 0.2 MPa (20 psi)
Digital: 0.01 MPa (1 psi)
Analogue: 0.1 MPa (10 psi)
Digital: 0.01 MPa (1 psi)
Analogue: 0.05 MPa (5 psi)
Digital:0.1 MPa (1 psi)
Instrument Length 290mm (11.5”) 290mm (11.5”) 290mm (11.5”)
Actuator Height
(skirt fitted)
85mm (3.4”) 85mm (3.4”) 110mm (4.3”)
Instrument Weight 1.8kg (4lb) 1.8kg (4lb) 2.0kg (4.4lb)
Kit Weight 4kg (8.8lb) 4kg (8.8lb) 5.2kg (11.5lb)
Battery Type 2 x LR6 (AA) alkaline dry batteries (digital gauge only) Battery Life: 2000 hours
Packing List:
20mm Kit Elcometer 506 Adhesion Tester with 20mm dollies (x10), standard skirt for 20mm dollies, 20mm dolly cutter handle, 20mm dolly cutter, Araldite standard two part epoxy adhesive (2 x 15ml tubes), abrasive pad, carry case, 2 x LR6 (AA) batteries (Digital Gauge only), test certificate and operating instructions.
50mm Kit Elcometer 506 Adhesion Tester with 50mm dollies (x6), standard skirt for 50mm dollies, 50mm dolly cutter arbor, 50mm dolly cutter, Araldite standard two part epoxy adhesive (2 x 15ml tubes), abrasive pad, carry case, 2 x LR6 (AA) batteries (Digital Gauge only), test certificate and operating instructions.

 

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