BYK

Flexibility Testers

Coating Flexibility Testers

For a coating to perform properly during use, the paint must have the proper amount of flexibility to withstand cracking under stress. A common test is bending a coated panel over a cylindrical or conical shaped bar. A mandrel bender is commonly used to test for paint flexibility. A cupping tester is another coating flexibility tester that slowly pushes a round punch through a coated panel until cracking occurs in the paint film. The degree of bending or deformation of the coated surface is measured to assess the coating flexibility.

byko-cup M

Cupping Tester

Cylindrical Mandrel Tester - ISO

The byko-cup M Manual Cupping Tester evaluates the elongation and deformability of lacquers and protective coatings applied to metal substrates.

The BYK-Gardner Cupping Tester is a highly precise instrument to test for elongation and deformation of coatings.
The ISO mandrel offers simple and quick test for the flexibility of coatings.
  • Ergonomic design to save counter space
  • Two hand crank operation for ease of operation
  • Precision gearbox to provide reproducible results
  • Steel spherical punch
  • Illuminated 10x magnifier on a pivoting arm
  • LCD display with a 0.01 mm resolution

  • Electro-hydraulic drive for highly reproducible results
  • Can accept large and small metal panels
  • Uniform cupping speed of 0.2 mm/sec.
  • Optional stereo microscope for visual evaluation
  • Rod diameters from 2 to 32 mm
  • Handle design to make it easy to bend the metal panel
  • Product selections are compliant with methods: ISO 1519, DIN 53150
  • International Standards
  • BS
    3900

    DIN
    53166, 53232

    ISO
    1520

    JIS
    K 5600-5-2, B 7729
  • Prices and Products
  • 5415
    byko-cup M
  • Accessories
  • 5416
    Zero Plate, 5415
    5417
    Magnifier, 5415
    5418
    Indenter, 5415
  • International Standards
  • ISO
    1520

    Erichsen Cupping
    EC
  • Prices and Products
  • 5400
    Automatic Cupping Tester
  • Comes complete with
  • PF-5400:
    Cupping tester
    Connection cable and plug
    Operating Manual
  • Specifications (PDF)
  • Accessories
  • 5411
    Stereo Microscope, PF-5400
  • International Standards
  • ASTM
    D 522

    DTMS 141a
    Method 2012, Method 6051
    Method 6221, Method 6223

    ISO
    1519
  • Prices and Products
  • 5710
    Cylindrical Mandrel Set, ISO
  • Comes complete with
  • PF-5710:
    Set of 12 SS rods from 2 mm to 32 mm; Frame; Operating instructions

  • Specifications (PDF)
  • Cylindrical Mandrel Tester – ASTM

    Conical Mandrel Tester

    The ASTM version mandrel has rod diameters commonly used in the Americas.
    The conical mandrel bender is a popular design to test coating flexibility.
    • Rod diameters from 1/8 to 1.0 inch
    • Economical priced
    • V-shaped cuts to hold the mandrel in place during a test
    • Base is designed to store the rods
    • Precision cut conical mandrel for accurate results
    • Built-in ruler for convenient measurement
    • Special sample holder plate design to prevent panel slippage
    • Economically price
    • Compliant with ASTM and ISO methods
    • Durable design for long term use
  • International Standards
  • ASTM
    D 522

    DTMS 141a
    Method 2012, Method 6051
    Method 6221, Method 6223
  • Prices and Products
  • 1412
    Cylindrical Mandrel Set, ASTM

  • Comes complete with
  • ISO Version:
    Set of 12 SS rods from 2 mm to 32 mm; Frame; Operating instructions

    US Version:
    Set of 9 SS rods from 1/8 in to 1.0 in, Frame, Operating instructions
  • Specifications (PDF)
  • International Standards
  • ASTM
    D 522, D 1737

    ISO
    6860
  • Prices and Products
  • 5751
    Conical Mandrel Tester
    Net Weight: 4.1 kg (9.0 lbs), Dimensions: 510 x 150 x 180 mm (20 x 6 x 7 in), shipping Weight: 5.5 kg (12.0 lbs)
  • Comes complete with
  • Stainless Steel Conical Mandrel
    Operating instructions
  • Specifications (PDF)