LOCTITE EA 9309NA

Main features

High Peel Strength on Prepared Aluminum
Glass, Metal, and Wood Bonding
1-Hour 180 deg F Cure

Product Description

LOCTITE® EA 9309NA AERO is a two-component, toughened epoxy paste adhesive for structural bonding and repair applications. It bonds prepared metal, wood, plastic, and glass surfaces and forms flexible bonds that resist water, salt spray, and most common fluids. The adhesive is particularly notable for its peel strength on aluminum and may be cured at room temperature or with an accelerated thermal schedule. A 100:23 mix ratio by weight and a 40-minute pot life for a 450 g mass at 77°F/25°C provide a defined working window for manual application and assembly.

Key features

High peel strength: Delivers a typical floating-roller peel strength of 89 lbf/in (396 N/25 mm) on PAA-treated 2024-T3 Alclad aluminum under the documented test conditions.
Flexible, toughened bond: Provides 10% elongation at break after a 72-hour cure at 77°F/25°C, supporting applications requiring a less brittle structural adhesive.
Room-temperature or accelerated cure: Reaches normal performance after 3–5 days at 77°F/25°C, with 1 hour at 180°F/82°C documented as a complete accelerated cure.

Applications / Suitable for

Aerospace structural bonding and repair
Bonding prepared aluminum and other metal surfaces
Bonding wood and glass
Bonding suitable plastic surfaces

TDS, SDS & Technical Documents

Technical Specifications

General Properties

Color

Beige (Part A) / red (Part B)/ red (mixed)

Mix Ratio

100:23 (by weight)

Physical Properties

Viscosity (Part B)

20–50 mPa.s

Additional Information

Technical properties

As-supplied / before-processing properties

Typical uncured component and mixed-material properties. Component identity, temperature, test method, and mixed mass are retained where they affect interpretation.

Property	Value	Unit	Method / condition
Product type	Two-component epoxy paste adhesive	—	As supplied
Color	Part A: beige; Part B: red; mixed: red	—	Visual appearance
Mix ratio, Part A:Part B	100:23	By weight	Volume measurement is not recommended for structural applications unless ratio accuracy is controlled
Viscosity	Part A: 150–600; Part B: 0.02–0.05; mixed: 12	Pa·s	25°C; Brookfield HBT. Part A: spindle 7 at 2.1 rad/s; Part B: spindle 1 at 10.5 rad/s; mixed: spindle 4 at 2.1 rad/s
Density	Part A: 1.15; Part B: 1.00; mixed: 1.1	g/mL	Uncured components and mixed adhesive
Pot life	40	minutes	450 g mass at 77°F/25°C; ASTM D2471, water bath
Shelf life	1	year	Part A and Part B stored below 77°F/25°C

After-processing / final-state properties

Typical cured-material and bonded-joint results. Values apply only to the documented substrates, surface preparation, cure schedules, specimen configurations, and test conditions.

Property	Value	Unit	Method / condition
Tensile lap shear strength	5,000 / 34.5	psi / MPa	ASTM D1002; 7075-T3 Alclad aluminum, PAA per ASTM D3933; cured 3 days at 77°F/25°C; tested at 77°F/25°C
Floating-roller peel strength	89 / 396	lbf/in / N/25 mm	ASTM D3167; 2024-T3 Alclad aluminum, PAA per ASTM D3933; 10 mil bondline; cured 24 hours at 77°F/25°C under 28 in-Hg; tested at 77°F/25°C
T-peel strength	46 / 205	lbf/in / N/25 mm	ASTM D1876; 2024-T3 Alclad aluminum, PAA per ASTM D3933; 10 mil bondline; cured 24 hours at 77°F/25°C under 28 in-Hg; tested at 77°F/25°C
Tensile strength	4,500 / 31.0	psi / MPa	ASTM D638; 0.125 in/3.18 mm casting; cured 72 hours at 77°F/25°C; tested at 77°F/25°C
Elongation at break	10	%	ASTM D638; cured 72 hours at 77°F/25°C; tested at 77°F/25°C
Shore D hardness	80	Shore D	ASTM D2240; cured 72 hours at 77°F/25°C; tested at 77°F/25°C
Glass-transition temperature, dry	127 / 53	°F / °C	DMTA, single cantilever; cured 72 hours at 77°F/25°C; heat-up rate 5°C/min, 1 Hz, 0.1% strain
Approximate service temperature	160 / 71	°F / °C	Defined as the temperature at which the adhesive retains 1,000 psi/6.9 MPa tensile lap shear strength using ASTM D1002