General Plastics LAST-A-FOAM® R-3318 Submersible Foam Series

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General Plastics LAST-A-FOAM® R-3318 Submersible Foam Series
Categories:	Other Engineering Material; Composite Core Material
Material Notes:	Product Description: LAST-A-FOAM® R-3300 is an easy-to-machine, pressure-resistant foam that provides buoyancy for underwater depths tested to 2,400 feet, when coated. The closed-cell structure of this series is uniquely engineered to withstand penetration by water and resist hydrostatic pressure. LAST-A-FOAM® R-3300 submersible foam is optimal for shallow to mid-water subsea buoyancy systems, marine and underwater robotics applications. Features & Benefits: Provides buoyancy with depths to 1,200 feet uncoated and 2,400 feet coated Excellent mechanical and insulation properties Easy to machine, coat, and paint Dimensionally stable Resistant to hydrostatic pressure High impact resistance Biologically inert Oil, grease, and solvent resistant Cost-effective solution Does not rot or decay Performs in freshwater and saltwater Compatible with many types of adhesives Applications: Underwater buoyancy Underwater robotics (ROV/AUV) Semi-submersible craft Pipeline flotation Subsea mooring buoyancy Buoyancy for assembly components in weightlessness simulation pools Underwater pumps for offshore drilling rigs Core material for resin-transfer molding Information provided by General Plastics Manufacturing Company
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Physical Properties	Original Value	Comments

Density	0.288 g/cc	ASTM D1622

Mechanical Properties	Original Value	Comments
Hardness, Shore D	37	cut foam surface; ASTM D2240
Tensile Strength	816 psi	Perpendicular to Rise; ASTM D1623
Flexural Strength	1197 psi	Rise Parallel to Beam Thick.; ASTM D790 Method 1-A
	1217 psi	Rise Parallel to Specimen Width; ASTM D790 Method 1-A
Flexural Modulus	34803 psi	Rise Parallel to Specimen Width; ASTM D790 Method 1-A
	34817 psi	Rise Parallel to Beam Thick.; ASTM D790 Method 1-A
Compressive Strength	542 psi @Temperature 93.3 °C	Parallel to Rise; ASTM D1621
	592 psi @Temperature 93.3 °C	Perpendicular to Rise; ASTM D1621
	967 psi @Temperature 23.9 °C	Parallel to Rise; ASTM D1621
	1037 psi @Temperature 23.9 °C	Perpendicular to Rise; ASTM D1621
Compressive Modulus	16852 psi @Temperature 93.3 °C	Parallel to Rise; ASTM D1621
	18052 psi @Temperature 93.3 °C	Perpendicular to Rise; ASTM D1621
	25207 psi @Temperature 23.9 °C	Parallel to Rise; ASTM D1621
	27409 psi @Temperature 23.9 °C	Perpendicular to Rise; ASTM D1621
Shear Modulus	2.431 ksi	Rise Parallel to Specimen Thick.; ASTM C273
Shear Strength	0.279 ksi	Rise Parallel to Specimen Thick.; ASTM C273

Thermal Properties	Original Value	Comments
CTE, linear	32.0 µin/in-°F @Temperature -45.6 - 93.3 °C	GP Method
Thermal Conductivity	0.320 BTU-in/hr-ft²-°F	ASTM C518
Glass Transition Temp, Tg	263 °F	ASTM E1824

Descriptive Properties
Closed Cell Content	98%	ASTM D6226
Depths Coated	488 meters	GP Method based on ASTM D570
Depths Uncoated	244 meters	GP Method based on ASTM D570
Hydrostatic Testing	Pass, <5% Wt Gain	at 350 psi
Tumbling Friability (%)	1.2	20 mins @ 60 rpm, ASTM C421

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