Product Description
Technical Specification
Accessories
Instruction Manual
Data Sheet
Videos

Elcometer 506 Pull-Off Adhesion Tester

The Elcometer 506 are lightweight, portable and easy-to-use adhesion testers available in analogue or digital gauges 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 adhesion 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.

 

Analogue Adhesion Tester

 

Adhesion Skirts Adhesion Actuator

Digital and analogue gauges available for both harsh and hazardous environments

Actuator skirts for a range of substrate thicknesses and bond strengths, on flat or curved surfaces

Low height actuator allows access in restricted areas. Safety harness clip prevents accidental damage of surrounding areas during test on vertical surfaces

 

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 adhesion on concrete & low bond strength substrates

When testing coatings adhesion 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

Correct dolly position

 

Correct Adhesion Test

Dolly and Actuator

 

Coating

 

Substrate

Incorrect dolly position

 
Incorrect Adhesion Test

Dolly and Actuator

 

Coating

 

Substrate

 

Preparing the surface and dolly

1. Select an appropriate test area which is flat and has sufficient test area to attach the adhesion gauge.

2. Abrade the dolly and surface, clean both to remove any dust - minimising the risk of an ‘adhesive’ failure.

Fixing the dolly

3. Mix the adhesive correctly and apply a uniform adhesive film over the entire dolly face.

4. 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.

5. 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.

6. If required, once the dolly has fully cured, score the coating around the dolly using the dolly cutter provided.

7. 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.

Elcometer 506 Digital Pull-Off Adhesion Tester
Elcometer 506 Analogue Pull-Off Adhesion TesterElcometer 506 Adhesion AccessoriesElcometer 506 Adhesion Testing

Technical Specification

Part Number

Description

Certificate

F506-20A

Elcometer 506 Analogue Adhesion Tester Kit; 20mm

F506-20AC

Elcometer 506 Analogue Adhesion Tester Kit; 20mm - Certified

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F506-20D

Elcometer 506 Digital Adhesion Tester Kit; 20mm

F506-20DC

Elcometer 506 Digital Adhesion Tester Kit; 20mm - Certified

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F506-50D

Elcometer 506 Digital Adhesion Tester Kit; 50mm

F506-50DC

Elcometer 506 Digital Adhesion Tester Kit; 50mm - Certified

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Click on the Accessories Tab above for a full list of dollies and accessories.

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: 0.1 MPa (10 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:0.01 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.

Packing List: 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.

 

STANDARD:

ASTM D4541, ASTM D7234, AS/NZS 1580.408.5, BS 1881-207, DIN 1048-2, EN 12636, EN 13144, EN 1542, EN 24624, ISO 16276-1, ISO 4624,
JIS K 5600-5-7, NF T30-606,
NF T30-062

 

Test Certificate supplied as standard

ο Calibration Certificate supplied as standard

Accessories

Dollies Dolly Diameter

Pack of 10*

Pack of 100

Adhesion Dollies

10mm (0.39”)

T5100010AL-10

T5100010AL-100

14.2mm (0.56”)

T9990014AL-10

T9990014AL-100

20mm (0.76”)

T9990020AL-10

T9990020AL-100

50mm (1.96”)

T9990050AL-4

-

50mm (1.96”) Stainless Steel

T9990050SS-4

-

*50mm (2”) dollies are supplied in packs of 4.
       
Dolly Skirts Diameter Standard Skirt Thin Substrate Skirt
Adhesion Dolly Skirts    10mm (0.39”) T9991420S -
14.2mm (0.56”) T9991420S T9990014T
20mm (0.76”) T9991420S T9990020T
50mm (1.96”) T9990050S -

50mm (1.96”) Stainless Steel

T9990050S

-

       
Adhesion Verification Unit  Description Part Number  
 Adhesion Verification Unit  Elcometer AVU Adhesion Verification Unit T99923924  
Elcometer AVU Adhesion Verification Unit - Certified T99923924C  
       
Dolly Cutters Description

Dolly Cutter Handle

Dolly Cutter

Adhesion Dolly Cutters

10mm (0.39”)

-

-

14.2mm (0.56”)

T9991420H

T9990014CT

20mm (0.76”)

T9991420H

T9990020CT

50mm (1.96”)

T9990050H

T9990050CT

50mm (1.96”) Stainless Steel

T9990050H

T9990050CT

 

 

   
Magnetic Anchor Clamp

Description

Part Number  

Adhesion Magnetic Anchor Clamp

Magnetic Anchor Clamp - holds actuator securely during tests

on vertical surfaces

T99923797

 
 

 

   
Adhesive

Description

Part Number

 

Epoxy Adhesive

Araldite Standard Two Part Epoxy Adhesive, 2 x 15ml Tubes

T99912906

 
 

 

 

 

Dolly Cleaning

Heating Tongs

Description

Part Number

 
 

Dolly Cleaning Heating Tongs - EUR 220V / UK 240V

T99923147

 
 

Dolly Cleaning Heating Tongs - US 110V

T99923103

 

Videos

2. Selecting the Dolly Diameter and Gauge

When it comes to selecting the dolly diameter and adhesion gauge type to use for a pull-off adhesion test; factors such as the substrate material, the substrate shape, and the expected coating strength will affect the dolly or gauge the user chooses.

 

This video is part of a series on Pull-Off Adhesion Testing, to see the next video please click here.

To download the video script in English click here.

RELATED VIDEOS

2. Selecting the Dolly Diameter and Gauge
2. Selecting the Dolly Diameter and Gauge

When it comes to selecting the dolly diameter and adhesion gauge type to use for a pull-off adhesion test; factors such as the substrate material, the substrate shape, and the expected coating strength will affect the dolly or gauge the user chooses.

 

This video is part of a series on Pull-Off Adhesion Testing, to see the next video please click here.

To download the video script in English click here.

//www.youtube.com/embed/NskjSM8n5UY
3. Selecting the most Appropriate Position for an Adhesion Test
3. Selecting the most Appropriate Position for an Adhesion Test

When preparing a pull-off adhesion test, whilst the actual location and the number of pulls is typically defined by the test method or procedure that’s being followed, the actual positioning of the dolly is vital, as poor positions can result in low pull-off values or invalid tests.


 

This video is part of a series on Pull-Off Adhesion Testing, to see the next video please click here. 

To download the video script in English click here.

 

//www.youtube.com/embed/7xmYIfozQaw
4. Preparing the Dolly and the Coating
4. Preparing the Dolly and the Coating

Properly preparing the dolly and the surface before performing a pull-off adhesion test will help achieve higher pull-off values.

 

This video is part of a series on Pull-Off Adhesion Testing, to see the next video please click here.

To download the video script in English click here.

 

//www.youtube.com/embed/-26j4aoiFe8
5. To Cut or Not to Cut?
5. To Cut or Not to Cut?

Should the coating around a dolly be cut, or left uncut prior to a pull-off adhesion test; and whose decision is it to make?

 

This video is part of a series on Pull-Off Adhesion Testing, to see the next video please click here.

To download the video script in English click here.

//www.youtube.com/embed/ZqSNwQSOPqA
6. The Pull-Off Test
6. The Pull-Off Test

Once the glue between a properly prepared dolly or pull stub and a properly prepared coating has fully cured, the pull-off adhesion test can be undertaken using the adhesion tester of choice.

 

This video is part of a series on Pull-Off Adhesion Testing, to see the next video please click here.

To download the video script in English click here.

 

//www.youtube.com/embed/4rjUgA2Lwos
7. Assessing the Result; Glue, Adhesive and Cohesive Failures
7. Assessing the Result; Glue, Adhesive and Cohesive Failures

Once the pull-off adhesion test has been completed the tensile pull-off force, whether the coating was coat or not, the dolly size and gauge type, and the failure mode of the coating are all recorded; with the nature of the failure usually recorded as an estimated percentage to the nearest 10%.

 

This video is part of a series on Pull-Off Adhension Testing, to view the playlist please click here.


To download the video script in English click here.

//www.youtube.com/embed/TuFY8_KI9lQ
1. An Introduction to Pull-Off Adhesion on Coated Surfaces
1. An Introduction to Pull-Off Adhesion on Coated Surfaces

Adhesion testers are used to test how well a coating has adhered to a surface, as poor adhesion can lead to premature coating failures. The coating inspector has essentially three main methods to choose from - cross hatch, push off, and the most common, the pull-off adhesion test.

 

This video is part of a series on Pull-Off Adhesion Testing, to see the next video please click here.

To download the video script in English click here.

//www.youtube.com/embed/rBTGaP-OXLM
<P> 8. Measuring the Pull-Off Adhesion of Coatings on Concrete</P>

 8. Measuring the Pull-Off Adhesion of Coatings on Concrete

Testing coating adhesion on concrete substrates using a pull-off adhesion gauge is similar to testing coatings on metal substrates. However, there are a number of differences in the test procedures and equipment used.


This video is part of a series on Pull-Off Adhension Testing, to view the series playlist please click here.


To download the video in script in English click here.

//www.youtube.com/embed/O0wMikGLi84