LOCTITE EA M-121HP
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
- Non-Sag Placement Control
- Two-Part, Room-Temperature-Curing System
- Prepared Metals Bonding
Product Description
LOCTITE® EA M-121HP™ is a two-part, medium-viscosity, non-sagging epoxy adhesive that cures at room temperature to form a tough, amber-beige bondline. The 2:1 by-volume system combines a 120-minute working life with resistance to peel and impact forces for low-stress structural bonding applications. It bonds prepared aluminum, steel and other metals, as well as selected plastics and ceramics. The cured adhesive also provides documented mechanical and electrical properties, thermal-shock resistance, and resistance to a range of solvents and chemicals.
Key features
- Toughened, non-sagging epoxy: Forms a tough bondline with documented resistance to peel and impact forces.
- Extended application window: Provides a typical working life of 120 minutes after mixing.
- Multi-material bonding: Suitable for bonding prepared metals, selected plastics, ceramics, glass and epoxy-glass materials.
Applications / Suitable for
- Low-stress structural bonding requiring peel and impact resistance
- Bonding aluminum, steel, stainless steel and other metals
- Bonding selected plastics, ceramics, glass and epoxy-glass materials
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Thermal Properties
Electrical Properties
Additional Information
As-supplied / before-processing properties
Typical properties of the separate components and mixed adhesive.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Components | Two components — resin and hardener | — | As supplied |
| Appearance | Resin: off-white to beige; hardener: amber; mixed: amber-beige | — | Visual |
| Mix ratio by volume | 2:1 | — | Resin:hardener |
| Mix ratio by weight | 100:46 | — | Resin:hardener |
| Resin viscosity | 41,000–61,000 | mPa·s (cP) | Brookfield RVT, 25°C, spindle 7, 50 rpm |
| Hardener viscosity | 2,000–4,000 | mPa·s (cP) | Brookfield RVT, 25°C, spindle 5, 50 rpm |
| Mixed specific gravity | 1.07 | — | 25°C |
| Working life | 120 | minutes | Typical value after mixing |
After-processing / final-state properties
Typical cured-material and adhesive properties. Results depend on the stated cure, substrate preparation and test configuration.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Glass transition temperature | 90 | °C | ASTM E 228; cured at 25°C except where noted |
| Tensile strength | 40.7 (5,903) | N/mm² (psi) | ISO 527-2 |
| Elongation | 10 | % | ISO 527-5 |
| Shore hardness | 76–90 | Shore D | ISO 868; cured 16–18 hours at 22°C followed by 2 hours at 65°C |
| Dielectric breakdown strength | 25.6 | kV/mm | IEC 60243-1 |
| Lap shear strength on grit-blasted steel | 29.4 (4,270) | N/mm² (psi) | ISO 4587; cured 12 hours at 65°C |
| Lap shear strength on etched and abraded aluminum | 33.1 (4,800) | N/mm² (psi) | ISO 4587; 0.1–0.2 mm gap; cured 12 hours at 65°C |
