LOCTITE AA H4720
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- 40-65 Minute Assembly Window
- Non-Sag 9.5 mm Gap Fill
- High Peel and Impact Strength
Product Description
LOCTITE AA H4720 is a two-part methacrylate structural adhesive formulated for galvanized steel and other metal bonding. Parts A and B mix 10:1 by weight or volume and form a teal mixture. Mixed at 22 deg C, open time is 40 to 65 minutes and fixture time is 90 to 105 minutes. Its thixotropic, non-sag behavior supports gaps up to 9.5 mm, while 0.127 mm glass beads help control bondline thickness. Typical cured performance includes 15 N/mm^2 lap shear on galvanized steel and 8.0 N/mm T-peel on steel after 48 hours at 22 deg C.
Key features
- Extended Assembly Open Time: Mixed open time is 40 to 65 minutes at 22 deg C.
- Non-Sag Gap Filling: Thixotropic material supports non-sag gaps up to 9.5 mm.
- Peel and Impact Strength: Typical T-peel on steel is 8.0 N/mm after 48 hours at 22 deg C; high impact strength suits structural metal bonding.
Applications
Structural bonding of galvanized steel and other compatible metals.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Mechanical Properties
Other Properties
Additional Information
As-supplied / before-processing properties
Two-part system; open and fixture times apply to the mixed adhesive at 22 deg C.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Mix ratio by weight | 10:1 | Component A:Component B | |
| Mix ratio by volume | 10:1 | Part A:Part B | |
| Mixed appearance | Teal | Uniform mixed color | |
| Open time | 40 to 65 | min | Mixed adhesive at 22 deg C |
| Fixture time | 90 to 105 | min | Mixed adhesive at 22 deg C |
| Non-sag gap fill | Up to 9.5 | mm | Non-sag gap-fill capability |
| Glass bead diameter | 0.127 | mm | Bondline control |
After-processing / final-state properties
Cured values describe the mixed adhesive system, not individual components.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Shore hardness | 67 | Shore D | Typical; cured 48 h at 22 deg C |
| Elongation at break | 15 | % | ISO 527-3; cured 48 h at 22 deg C |
| Tensile strength | 18 | N/mm^2 | ISO 527-3; cured 48 h at 22 deg C |
| Tensile modulus | 897 | N/mm^2 | ISO 527-3; cured 48 h at 22 deg C |
| T-peel, steel | 8.0 | N/mm | ISO 11339; cured 48 h at 22 deg C |
| Lap shear, galvanized steel | 15 | N/mm^2 | ISO 4587; cured 48 h at 22 deg C |
