DYMAX 6-621-T

Harmonization Code : 3824.99.92.97 | Prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included: other : other : other

DYMAX 6-621-T

Main features

  • Medium-Viscosity Process Control
  • Secondary Cure for Shadowed Joints
  • Multi-Material Structural Attachment

Product Description

Dymax Multi-Cure 6-621-T Adhesive is a medium-viscosity structural adhesive for bonding phenolic and filled plastics, glass, and metal. The grade supports UV and visible light cure for exposed bond areas, with secondary heat and activator options for shadowed regions or close-fitting joints. Its intermediate flow profile distinguishes it from the gel and higher-viscosity members of the 6-621 family while retaining the same multi-route processing concept. Applications include metal-to-glass bonding, coil winding, potting, and structural battery bonding where a controlled liquid application is preferred over a gel bead.

Key features

  • Medium-viscosity application: The T grade provides an intermediate flow profile for controlled liquid dispensing.
  • Secondary-cure versatility: Heat and activator options complement UV/visible cure in restricted-light joints.
  • Family-matched assembly uses: The grade supports metal-to-glass, winding, potting, and structural battery applications.

Applications / Suitable for

  • Metal-to-glass bonding
  • Coil winding and potting
  • Structural battery bonding
Product Family

DYMAX 6-621-T

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Clear Translucent Liquid
Density (g)
1.08 g/cm3
Refractive index
The refractive index determines how much the path of light is bent, or refracted, when entering a material. It is calculated by taking into account the velocity of light in vacuum compared to the velocity of light in the material. The refractive index calculation can be affected by the wavelength of light and the temperature of the material. Even though it is usually reported on standard wavelengths it is advised to check the TDS for the precise test parameters.
1.51
Thermal Properties
Glass Transition Temperature (Tg)
The glass transition temperature for organic adhesives is a temperature region where the polymers change from glassy and brittle to soft and rubbery. Increasing the temperature further continues the softening process as the viscosity drops too. Temperatures between the glass transition temperature and below the decomposition point of the adhesive are the best region for bonding. The glass-transition temperature Tg of a material characterizes the range of temperatures over which this glass transition occurs.
78 °C
Mechanical Properties
Elongation
Elongation is the process of lengthening something. It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks. It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.
20 %
Chemical Properties
Water Absorption
1.7 %
Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
3,500 mPa.s

Additional Information

Technical properties

As-supplied / before-processing properties

Before-processing characteristics for selecting the medium-viscosity 6-621 family grade.

Property Value Unit Method / condition
Viscosity class Medium As supplied
Product form Flowable structural adhesive Before cure
Primary cure activation UV and visible light Exposed adhesive areas
Secondary cure option Heat Shadowed or inaccessible areas
Activator cure option Compatible activator Close-fitting or shadowed joints
Technical properties

After-processing / final-state properties

Final bonded-state characteristics and supported assembly scope.

Property Value Unit Method / condition
Final function Structural bonded joint After complete cure
Bonded material scope Phenolic and filled plastics; glass; metal Substrate range
Primary interface Metal-to-glass Assembly use
Electrical winding use Coil winding attachment Cured assembly
Encapsulation and battery use Potting; structural battery bonding Within the Application scope

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