tesa HAF® 58451

Product description

tesa HAF® 58451 is a reactive heat activated film based on phenolic resin and nitrile rubber with electrically conductive properties. This black double sided tape has no backing. It is protected by a 50 μm PET liner.
At room temperature tesa HAF® 58451 is not tacky. It is activated by heat and pressure applied during the assembly process.
Special features:
  • Extremely high performance, even on small bonding areas and thin design gaps
  • Excellent electrical conductivity in XYZ-direction
  • Superior anti-repulsion properties even at elevated temperatures
  • Outstanding chemical resistance

Product Construction

Type of adhesive nitrile rubber / phenolic resin
Type of liner PET
Colour of liner
Total thickness 30 µm
Thickness of liner
Backing material none
Color black

Properties / Performance Values

Shelf life time < 25°C
Thermal conductivity x-y-direction
Bonding strength
Contact resistance z-direction 0.05
Bonding temperature
Shelf life time < 15°C
Bonding strength (push-out)
Release of liner
Surface resistance x-y-direction (backing)
Tensile strength
Surface resistance x-y-direction (adhesive)
Thermal conductivity z-direction
Bonding strength (dynamic shear) 5
Shelf life time < 5°C
Temperature resistance long term
Surface resistance x-y-direction 0.5
Type of cover liner
Surface resistivity (min.)
Temperature resistance short term

Adhesion to Values

Adhesion to steel (after 14 days), permanent side
Adhesion to steel (after 14 days), removable side
Adhesion to Steel (initial), removable side
Adhesion to Steel (initial), permanent side

Additional Info

Technical recommendations: tesa HAF® 58451 is not self adhesive. It is activated by heat and pressure over a certain interval. The following values are recommendations for bond line parameters to start with.
1. Pre-lamination: During pre-lamination, the tape is laminated onto one component.
  • Temperature¹ ≥120 °C
  • Pressure² ≥5 bar
  • Time ≥5 s
2. Bonding: Remove the liner from the tape after pre-lamination step. Place the pre-laminated component onto the substrate to bond with. Apply sufficient temperature while applying pressure for the bonding time to reach sufficient bonding strength.
  • Temperature¹ 120-250 °C
  • Pressure² 5-30 bar
  • Time 5 s – 3 min
¹ ‘Pre-lamination’ and ‘Bonding’ temperature refer to the data that is measured in the bond line. ² ‘Pre-lamination’ and ‘Bonding’ pressure refer to the force that is transformed from jig surface directly to the bonding area. Bonding strength values were obtained under standard laboratory conditions. (Material: SUS test specimen / bonding conditions: temperature = 180 °C; pressure = 30 bar; time = 30 sec). To reach maximum bonding strength surfaces should be clean and dry.
tesa® products prove their impressive quality day in, day out in demanding conditions and are regularly subjected to strict controls. All technical information and data above mentioned are provided to the best of our knowledge on the basis of our practical experience. They shall be considered as average values and are not appropriate for a specification. Therefore tesa SE can make no warranties, expressed or implied, including, but not limited to any implied warranty of merchantability or fitness for a particular purpose. The user is responsible for determining whether the tesa® product is fit for a particular purpose and suitable for the user’s method of application. If you are in any doubt, our technical staff will be glad to support you.

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