ABLESTIK 342-3.5
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- Two-Part Ambient-Cure Processing
- 5,000 mPa s Application Viscosity
- 29.0 N/mm^2 Aluminum Lap Shear
Product Description
LOCTITE® ABLESTIK 342-3.5 is a two-component amber epoxy adhesive for general assembly applications. It can cure at room temperature or with heat and is documented for bonding semi-porous materials such as ferrites where a physical bond is required. The adhesive provides a typical viscosity of 5,000 mPa·s at 25°C and an eight-hour work life at 25°C. Guideline cure options include 48 hours at 25°C, 4 hours at 75°C, 2 hours at 95°C, or 1 hour at 120°C. Typical cured properties include Shore D hardness of 86, a glass-transition temperature of 71°C, and aluminum-to-aluminum lap shear strength of 29.0 N/mm² at 25°C.
Key features
- Room-temperature or heat cure: Guideline cure schedules range from 48 hours at 25°C to 1 hour at 120°C.
- Extended working time: Typical work life is eight hours at 25°C, based on a 25% increase in viscosity.
- High bonded-joint strength: Typical aluminum-to-aluminum lap shear strength is 29.0 N/mm² at 25°C.
Applications / Suitable for
- General assembly bonding
- Bonding semi-porous materials such as ferrites where a physical bond is required
- Aluminum-to-aluminum bonding under the documented test condition
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Physical Properties
Additional Information
As-supplied / before-processing properties
Typical physical, handling, storage, and guideline cure information before final processing.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Technology | Epoxy | — | Two-component adhesive |
| Appearance | Amber liquid / paste | — | TDS appearance and SDS physical-state description |
| Viscosity | 5,000 | mPa·s (cP) | Brookfield CP51, 5 rpm at 25°C |
| Density / relative density | 1.2 | — | SDS physical-property value |
| VOC content | 2 | g/L | SDS value |
| Work life | 8 | hours | At 25°C; endpoint is a 25% increase in viscosity |
| Shelf life — kits | 365 | days | At 25°C, from date of manufacture |
| Shelf life — premixed frozen syringes | 365 | days | At -40°C, from date of manufacture |
| Recommended cure schedule | 48 | hours | At 25°C; guideline recommendation |
| Alternative cure schedules | 4 hours, 2 hours, or 1 hour | — | 4 hours at 75°C, 2 hours at 95°C, or 1 hour at 120°C; guideline recommendations |
After-processing / final-state properties
Typical physical, thermal, and bonded-joint properties of the cured adhesive. Values are reference data and are not product specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Hardness | 86 | Shore D | Cure condition and test method not stated |
| Glass-transition temperature | 71 | °C | Method and cure condition not stated |
| Coefficient of thermal expansion — below Tg | 35 | ppm/°C | TMA; cure condition not stated |
| Coefficient of thermal expansion — above Tg | 180 | ppm/°C | TMA; cure condition not stated |
| Lap shear strength — aluminum to aluminum | 29.0 (4,200) | N/mm² (psi) | Tested at 25°C; surface preparation, bondline, cure condition, and test method not stated |
