LOCTITE AA H8500
Harmonization Code : 3403.19 | Lubricating Preparations (With 70% or More Petroleum Oils) For Automotive and Other Uses
Main features
- Spacer-Bead Bondline Control
- 25-Minute Steel Assembly Window
- High-Impact Steel Bonding
Product Description
LOCTITE AA H8500 is a thixotropic, two-part methacrylate adhesive paste for structural bonding of steel and aluminum. The system mixes 10:1 by volume and forms a grey viscous paste; 0.75 mm spacer beads help limit excessive squeeze-out during clamping. At 25 deg C, mixed working time is 25 minutes on steel or aluminum, with a 10 minute working life defined by viscosity doubling. Typical cured performance includes 26 N/mm^2 lap shear on grit-blasted mild steel, 16 N/mm T-peel on steel, and impact strength above 14 J on grit-blasted mild steel after 72 hours at 22 deg C. These characteristics combine assembly control with high peel and impact performance.
Key features
- Spacer-Bead Bondline Control: 0.75 mm spacer beads help prevent excessive squeeze-out during clamping.
- Steel and Aluminum Working Time: Mixed working time on steel and aluminum is 25 minutes at 25 deg C.
- Peel and Impact Performance: After 72 hours at 22 deg C, typical T-peel on steel is 16 N/mm and impact strength on grit-blasted mild steel is above 14 J.
Applications
Structural bonding of steel and aluminum assemblies.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Mechanical Properties
Thermal Properties
Other Properties
Additional Information
As-supplied / before-processing properties
Two-part system; working-time values apply to mixed adhesive at 25 deg C.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Mix ratio by volume | 10:1 | Part A:Part B | |
| Part A specific gravity | 0.98 | Typical at 25 deg C | |
| Part A viscosity | 35,000 to 60,000 | mPa s | Brookfield HBD; spindle 5; 20 rpm; 25 deg C |
| Part B specific gravity | 0.96 | Typical at 25 deg C | |
| Part B viscosity | 10,000 to 30,000 | mPa s | Brookfield HBD; spindle 4; 20 rpm; 25 deg C |
| Mixed specific gravity | 0.99 | Typical at 25 deg C | |
| Working time | 25 | min | Steel or aluminum; maximum time before assembly; 25 deg C |
| Working life | 10 | min | Time for mixed viscosity to double |
After-processing / final-state properties
Cured values describe the mixed adhesive system, not individual components.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Glass transition temperature | 98 | deg C | ISO 11359-2; typical cured material |
| Shore hardness | 70 | Shore D | ISO 868; typical cured material |
| Elongation at break | 28 | % | ISO 527-2; typical cured material |
| Lap shear, grit-blasted mild steel | 26 | N/mm^2 | ISO 4587; cured 72 h at 22 deg C |
| T-peel, steel | 16 | N/mm | ISO 11339; cured 72 h at 22 deg C |
| Impact strength, grit-blasted mild steel | Above 14 | J | ISO 9653; cured 72 h at 22 deg C |
