Enhanced TDS
Identification & Functionality
- Chemical Family
- RTU Product Type
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Product Feature
- Sandable in as little as 70 minutes
- Service strength in 24 hours
- Color mix indicator
- 1:1 mix ratio by weight or volume
- Off-ratio tolerant by up to 40%
- Retains strength at high temperatures
- Flame retardant: meets FAR 25.853a requirements
- Meets BMS 5-28 Type 9 requirements
- Ultra-low density
- High strength and high modulus
- Service temperature up to 350°F
- 1 year shelf life
- 1-to-1 mix ratio by weight and volume
- Excellent tolerance with off ratio
- Easy to process with color mix indicator and rapid sanding
- “Wet-Finger” smoothable (with Glove)
- No SVHC as defined by REACH*
- Product Features
- Flame retardant: meets FAR 25.853a requirements
- Meets BMS 5-28 Type 9 requirements
- Ultra-low density
- High strength and high modulus
- Service temperature up to 350°F
- 1 year shelf life
- 1-to-1 mix ratio by weight and volume
- Excellent tolerance with off ratio
- Easy to process with color mix indicator and rapid sanding
- “Wet-Finger” smoothable (with Glove)
- No SVHC as defined by REACH*
- Product Advantages
- Weight savings
- Faster processing
- Easy to use
- Versatile applications
- Reduced inventory costs
- Features and Benefits
- Flame retardant: meets FAR 25.853a requirements
- Meets BMS 5-28 Type 9 requirements
- Ultra-low density
- High strength and high modulus
- Service temperature up to 350°F
- 1 year shelf life
- 1-to-1 mix ratio by weight and volume
- Excellent tolerance with off ratio
- Easy to process with color mix indicator and rapid sanding
- “Wet-Finger” smoothable (with Glove)
- No SVHC as defined by REACH (Does not intentionally contain any Substances of Very High Concern (SVHC) for authorization as published by the European Chemicals Agency (ECHA) pursuant to Article 59 REACH as of December, 2013)
- EPOCAST® 1645 A/B void filler can increase productivity thanks to its 1:1 mix ratio, color mix indicator, and excellent off-ratio mixing tolerance. It is also sandable within 2-3 hours and cures in one day at room temperature. A long shelf-life helps to simplify inventory management and further reduce costs. This flame-retardant void filler can also increase end-product performance. Compared to competitive products, EPOCAST® 1645 A/B void filler can provide up to a 23% improvement in strength at room temperature and up to an 85% improvement at elevated temperatures.
Applications & Uses
- Application Area
- Cure Method
- Markets
- Applications
- Mixing Ratio
Product
Parts by weight or volume
Epocast® 1645 FR A Resin
100
Epocast® 1645 FR B Hardener
100
Material temperatures should be above 18°C (65°F) when mixing. Mix both components thoroughly for several minutes to insure complete and uniform mixing.
Properties
- Physical Form
Regulatory & Compliance
- OEM Specifications
- Quality Standards
Technical Details & Test Data
- Gel Time
1645 FR A Resin 1645 FR B Hardener Gel Time at 23°C, min Peak Exotherm Temperature, °F (°C)
5 g 5 g 185 Not measured 10 g 10 g 150 Not measured 25 g 25 g 85 Not measured 50 g 50 g 65 121 (49) 100 g 100 g 45 130 (54) 200 g 200 g 40 160 (71) 55 g 50 g (10% off ratio) 85 Not measured 60 g 50 g (20% off ratio) 90 Not measured 65 g 50 g (30% off ratio) 95 Not measured 70 g 50 g (40% off ratio) 95 Not measured 50 g 55 g (10% off ratio) 75 Not measured 50 g 60 g (20% off ratio) 80 Not measured 50 g 65 g (30% off ratio) 80 Not measured 50 g 70 g (40% off ratio) 80 Not measured Gel time and work life varies greatly with the mass of the material being mixed at one time. Too large a quantity of mixed material will reduce the work life/gel time and produce a significant and undesirable heat release unless it is spread rapidly.
- Sandability
EPOCAST® 1645 A/B provides an excellent sandability once hardened. The minimum cure time prior to sanding will depend on the mass of EPOCAST® 1645 A/B being used and on the actual ambient temperature. The table below provides some general guidelines for various mass of EPOCAST® 1645 A/B cured at 73°F (23°C). At elevated temperature (e.g. with hot air) the minimum sandable time can be significantly reduced in order to save processing time.
Epocast® 1645 A/B
Sandable time
10 g 4 - 5 hours 30 g 3 - 4 hours 50 g 2 - 2.5 hours 100 g 70 - 80 minutes - Processing Condition
Processing Data
Typical cure cycles 1 - 3 days at 23°C
Gel at RT + 1 - 3 hours at 52°C
Gel Time*:
1645 FR A Resin 1645 FR B Hardener Gel Time at 23°C, min Peak Exotherm Temperature, °F (°C) 5 g 5 g 185 Not measured 10 g 10 g 150 Not measured 25 g 25 85 Not measured 50 g 50 g 65 121 (49) 100 g 100 g 45 130 (54) 200 g 200 g 40 160 (71) 55 g 50 g (10% off ratio) 85 Not measured 60 g 50 g (20% off ratio) 90 Not measured 65 g 50 g (30% off ratio) 95 Not measured 70 g 50 g (40% off ratio) 95 Not measured 50 g 55 g (10% off ratio) 75 Not measured 50 g 60 g (20% off ratio) 80 Not measured 50 g 65 g (30% off ratio) 80 Not measured 50 g 70 g (40% off ratio) 80 Not measured *Gel time and work life varies greatly with the mass of the material being mixed at one time. Too large a quantity of mixed material will reduce the work life/gel time and produce a significant and undesirable heat release unless it is spread rapidly.
Sandability: Epocast® 1645 FR A/B provides an excellent sandability once hardened. The minimum cure time prior to sanding will depend on the mass of Epocast® 1645 FR A/B being used and on the actual ambient temperature. The table below provides some general guidelines for various mass of Epocast® 1645 FR A/B cured at 73°F (23°C). At elevated temperature (e.g. with hot air) the minimum sandable time can be significantly reduced in order to save processing time.
Epocast® 1645 FR A/B Sandable time 10 g 4 - 5 hours 30 g 3 - 4 hours 50 g 2 - 2.5 hours 100 g 70 - 80 minutes - Processing Guidelines
Property Value Unit Condition Gel time 65 min at 25°C, 100 g Typical cure cycles 1 - 3 days 1 - 3 days at 23°C or Gel at RT + 1 - 3 hours at 52°C
- Typical Physical Properties
General performance at 23°C (cured 3 hours at 125°F/52°C)
Property Test Method Value Compressive Strength, psi ASTM D695 2,850 Compressive modulus, ksi ASTM D695 190 Lap shear strength, Al-Al, psi ASTM D1002 1,100 Shore D Hardness ASTM D2240 58 Glass Transition temperature, °C ASTM E1824 50 CTE, μm/m∙°C ASTM E831 41.5 Flammability (12-second vertical burn) (Extinguishing time, sec) FAR 25.853a max. 2 Extinguishing time, sec (Burn length, in) FAR 25.853a max. 2
Packaging & Availability
- Packaging Type
- Regional Availability
- Packaging Information
Available in bulk packaging
Storage & Handling
- Storage Conditions
- Epocast® 1645 FR A/B epoxy syntactic adhesive should be stored in a dry place in the original sealed containers at temperatures between 2°C and 40°C (36°F and 104°F). After use, tightly reseal containers.
- The product should not be exposed to direct sunlight.
Other
- Physical Properties
Value Units Test Method / Conditions Density 0.45-0.48 g/cm³ g/cm³ ASTM D792 at 25°C