Drum Handling
 Drying Time/Gelation
 Film Flaws
 Film Thickness
 Impact & Flexibility
 Lab Apparatus
 Measuring Instruments
 Optical Instruments
 pH & Conductivity
 Surface Profile
 Surface Tension
Home  >>  Products  >>  Adhesion  >>  Automatic Cupping Tester

Automatic Cupping Tester

Meets or Exceeds: ISO 1520 DIN EN NF 1520, DIN 53156, DIN 53232, BS 3900-E4, NBN T22-104, NFT 30 019

The Automatic Cupping Tester performs a cupping (Erichsen/Dent) test on coated steel panels to define the resistance of paint, varnish or related products to cracking and/or detachment from a metal substrate when subjected to gradual deformation by indentation under standard conditions.


Auto Cup Test





The test is either used as a “pass/fail” test by testing to a specified depth or defining the minimum depth at which a coating fails by gradually increasing the indentation. The ISO 1520 standard requires panels to be slowly deformed at a steady rate between 0.1 mm/s and 0.3 mm/s without interruption. Especially with thicker steel panels hand-operated testers not always allow an uninterrupted deformation.

The Automatic Cupping Tester is driven by a microstep controlled electro motor which allows precise and steady deformation with 0.01 mm steps. Operation is intuitive by means of a jog-dial switch and multilingual operating menu on a large illuminated display.

An integrated LED powered sample illumination system comforts examining the coating under test. To guarantee maximum visibility of all possible types of surface including high gloss, matte or colored samples the angle of the LED light can be set. Choose light from just one or all directions. The strength of the LED’s is adjustable but also the colors can be changed to achieve maximum contrast.

Micrometer Accurate Calibration Feature - A second new feature is the possibility to micrometer-accurate calibration. Previously calibration was performed by using a steel plate and pressing the indenter against the plate until the operator noticed resistance. Usually this meant pressing the indenter into the plate and having an offset.This new calibration method allows users to perform an accurate electronic calibration.


Technical Data

Technical Data
Indenter Speed: 0.01 - 0.70 mm/s
Stroke Length: 0 - 12 mm
Max Panel Width: Max 100mm
Max Panel Thickness Steel: Max 0.8 mm
Max Panel Thickness Aluminum: Max 1.2 mm
Dimensions and Weight
Depth: 450 mm
Width: 350 mm
Height: 600 mm
Net weight: Approx. 31 kg
Basic Unit
Power Supply: 115 or 230V, 50/60 Hz
Power Consumption: Max 80 Watt
Display: Blue illuminated, graphic 100 x 35 mm, 193 x 64 pixels
Safety: Emergency Button, integrated Acoustic Alarm
Function: Jog Shuttle knob by Rotation/Pushing
Indenter Speed Accuracy: ±1% of set speed
Stroke Length Accuracy: ± 0.01 mm


Cupping Test in the 21st Century


In the last decade paints have changed significantly, as has research, color diversity and demands. The Cupping Tester, a benchmark tester for many coatings, has now been changed to meet new demands.

The Automatic Cupping Tester, a new generation cupping tester, has new features such as complementary color selection. Defects in the coating will manifest as lines, cracks or marks in different colors when performing the test. With normal white light the reflections from coating and defects are equal in intensity. Complementary color selection will make an assessment of defects much easier. For example, green light on a red panel will make the panel look black while any defect with different color is highlighted. This will allow for an easy assessment of defects and reduce operator eye strain.

Paint Crackling

The Cupping test is mainly a low contrast test, as can be seen in the images. The use of green light on a red panel is an ideal example of the use of complementary colors. As shown in the images, the visual contrast between the coating and the defects is much higher in contrast, thus making assessment of the end point much easier.

End point determination accuracy was increased in the past by using up to 10X magnification. The use of a magnifier often limits the visibiity due to reflections and glare. This increases operator strain and fatigue while reducing reliability. Complementary color selection will allow the user to see much more with less strain. As shown in the table, the use of complementary color is comparable to that of a magnifier without the operator strain, making the method much more reliable.

Test Panel for the Automatic Cupping Tester Eample 1 Test Panel for the Automatic Cupping Tester Example 2
Test panel in warm white and green light 0mm indentation Test panel in warm white and green light 4mm indentation


Indentation Endpoint

Indentation Endpoint
Indentation endpoint difference based on determination method
Panel coating color Indentation endpoint in mm
Naked eye - white light Naked eye - complementary color 10x magnification - white light
Red panel 8.024 7.535 7.298
Yellow panel 0.975 0.709 0.566
Purple panel 6.050 5.714 5.505


Foil Clamp


For use with thin substrates (foils) like metal sheet brass and copper, an optional foil clamp (PA-920211) can be ordered. Thin substrates tend to curl on the sides and then cannot be removed properly from the clamping mechanism of the cuping test.

Sliding the foil clamp on top of the sample after the sample has been locked into the cupping test standard clamping mechanism will prevent the sample material to curl. After test the coil clamp is removed and the standard clamp is relesed where after the sample can be removed properly.

Foil Clamp for the Test Panel for the Automatic Cupping Tester






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

Reference panel, Optical tool support rod, Optical tool mount, Power cord, Manual
PA-920201 SP4305 Automatic Cupping Tester set for 115V $5,400.00
PA-920203 SP4300 Automatic Cupping Tester set for 230V 5,400.00


  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
  Sales/Trade-In Offers Articles/Links Repairs/Service Policies

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