Silicones, silicone oils, sprays
Casting and potting resins
Internal reference:
49-439.FL.ML050
Technical Data
Typical values, not a specification. The technical data sheet (TDS) is binding.
Product Information
- Brand
- Permabond
- Manufacturer
- Permabond Engineering Adhesives Ltd
- UFI (Unique Formula Identifier)
- 2SN0-E0GY-V005-RK6J
- Container
- 50 ml
- Mixing Ratio
- 10:1.5
Performance at Full Cure
- Steel
- 20-25 N/mm²
- Tensile strength (ISO37)
- 25-30 N/mm²
- Impact strength (ASTM D-950)
- 15-20 kJ/m²
- Coefficient of thermal expansion (ASTM D-696)
- 80 x 10-6 1/K
- Thermal conductivity (ASTM C-177)
- 0.1 W/(mK)
- Volume resistivity (ASTM D-257)
- 2 x 1013 Ohm.cm
Bonding Properties
- Maximum gap filling capacity up to
- 0.15 mm
- Handling strength at 23°C
- 40-75 seconds
- Functional Strength
- 3-5 minutes
Properties of the permanent bond
- Peel resistance (ISO 4578)
- 85-100 N/25mm
- Dielectric constant (ASTM D-150)
- 4,6
Physical Properties
- Chemical group
- Urethane methacrylate
- Color
- amber yellow
- Viscosity at 20 rpm
- 600-1200
- Viscosity (adhesives)
- Medium viscosity 500 - 5000 mPas
- Specific Gravity
- 1.0
Electrical Properties
- Dielectric strength (ASTM D-149)
- 30-50 kV/mm
Curing values
- Final strength
- 24 hours
Shear strength ISO 4587 in N/mm²
- Zinc
- 12-18 N/mm²
Thermal Properties
- Storage Temperature (°C)
- 2-7
- Operating temperature (°C)
- -55 to 165
Product Description
Permabond TA439 is a 10:1 MMA structural adhesive — the industrial standard variant of the no-mix concept for high-stress bonding applications without aerospace requirements.
With a 10:1 mixing ratio, TA439 is structurally comparable to the aerospace TA4246 — the same no-mix logic with adhesive and initiator applied separately. It lacks Boeing/Airbus approvals, making it more cost-effective for purely industrial applications.
MMA structural adhesive in a 10:1 ratio — same no-mix approach as TA4246, without aerospace approval. The cost-effective all-round choice for industrial structural bonding.
What distinguishes Permabond TA439
What is Permabond TA439 used for?
Processing
Recommended accessories
Important Notes
Which Permabond MMA structural adhesive for which application?
Permabond TA439 in direct comparison with related products of the TA series.
Permabond TA439 Current Product | Permabond TA 4246 → | Permabond TA436 → | Permabond TA 4200 → | |
|---|---|---|---|---|
| Application | MMA structural adhesive 10:1 — All-round application | Boeing+Airbus approved | No-mix variant | 1:1 mixing ratio |
| Mixing ratio | 10:1 volume parts | 10:1 | — | 1:1 |
| Handling strength | — | 2–4 min | — | — |
| Steel shear strength | 20–25 N/mm² | 33–35 N/mm² | 15–25 N/mm² | 23–25 N/mm² |
| Peel resistance | — | 150–180 N/25 mm | — | — |
Frequently asked questions about Permabond TA439
Practical application and design questions — answered by SILITECH.
MMA structural adhesive 10:1 — cost-effective alternative to TA4246, general industrial bonding.
TA series MMA structural adhesives typically operate using a no-mix process: initiator on one surface, adhesive on the other—upon joining, the initiator activates the adhesive. Mixing ratio: 10:1 by volume. Handling strength after 2–10 minutes, final strength after 24 hours at 23 °C.
MMA structural adhesives (methyl methacrylate) offer higher impact and peel strength than classic 2K epoxies — important for dynamically loaded bonds. The no-mix processing with a separate initiator eliminates the pot life limitation. Cure time is typically faster (minutes instead of hours).
Permabond TA439 bonds reliably: Steel: 20–25 N/mm². Substrate failure is common with polycarbonate and PVC (bond stronger than material).
Permabond TA439 does not have specific aerospace approvals like TA4246 (Boeing/Airbus). For industrial applications without aerospace requirements, the product is approved according to Permabond standards.
Permabond TA439 is a 10:1 MMA structural adhesive — for all-round applications (10:1 volume mix). Permabond TA 4246 is a 10:1 aerospace adhesive — approved for Boeing and Airbus.
From the Permabond MMA range: Permabond TA439 (MMA structural adhesive 10:1 — all-round application); Permabond TA4246 (Aerospace 10:1); Permabond TA436 (Toughened Acrylic); Permabond TA4200 (1:1 standard). For premium aerospace applications, see TA4246 (Boeing and Airbus approved). For maximum industrial strength without the aerospace surcharge, see TA452.