ARALDITE® 252-1 / HARDENER 252-2

• Low density two-part Epoxy Void and Edge Filler
• Self extinguishing
• Non sagging paste
• High compression resistance
• Easily sandable
• 24 months shelf life
• High Temperature stability after room temperature cure

Recommended cure cycle:
7 days at 23°C or 2 hours at 70°C

Handling strength:
16 hours at 23°C

Application:
The resin and hardener must be blended until they form a homogeneous mix shown by a uniform color. The mix can be applied manually or extruded.

The pot life depends on the quantity mixed and the shape of the container (use a shallow container to extend pot life). As an approximate guide:
For a 50g mix, pot life at 23°C is 2 hours
For a 100g mix, pot life at 23°C is 1,5 hours

Equipment maintenance:
All tools should be cleaned before syntactic residues have had time to cure. The removal of cured residues is a difficult and time-consuming operation. If solvents such as acetone are used for cleaning, operatives should take the appropriate precautions and, in addition, avoid skin and eye contact.

Compressive strength (typical average values) – Cure 2h at 70°C

Compressive strength versus 80°C heat ageing (typical average values)
Cure 7 days at RT
Test at 23°C

Compressive strength versus tropical weathering ageing (40°C / 92% RH)
(typical average values)
Cure 7 days at RT
Test at 23°C

Compressive Modulus at 23°C (typical average values):
cure 2h at 70°C:         2.6 GPa
cure 7 days at 23°C:  2.4 GPa

Average lap shear strength (typical average value)   : 12 MPa
Substrate: Sand blasted aluminium (ISO 4587)
Cure 2h at 70°C - Test at 23°C

Flammability - Vertical Bunsen Burner Test (typical average values)
Cure cycle: 7 days at 23°C

Maximum optical smoke density (typical average values)
Cure cycle: 7 days at 23°C

Concentration of smoke gas (typical average values)
Cure cycle: 7 days at 23°C

• Araldite® 252-1 resin and Hardener 252-2 can be stored for up to 2 years at (6 - 28)°C in their original sealed containers. The expiry date is indicated on the label.
• Our products are generally quite harmless to handle provided that certain precautions normally taken when handling chemicals are observed. The uncured materials must not, for instance, be allowed to come into contact with foodstuffs or food utensils, and measures should be taken to prevent the uncured materials from coming in contact with the skin, since people with particularly sensitive skin may be affected. The wearing of impervious rubber or plastic gloves will normally be necessary; likewise the use of eye protection. The skin should be thoroughly cleansed at the end of each working period by washing with soap and warm water. The use of solvents is to be avoided. Disposable paper - not cloth towels - should be used to dry the skin. Adequate ventilation of the working area is recommended.