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Delta Cooling Towers - Materials of Construction

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Table provides a listing of materials used in the construction of Delta Cooling Towers corrosion resistant cooling towers, including test method reference and physical properties.

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Delta Cooling Towers - Materials of Construction

  1. 1. The information, recommendations, and opinions set forth herein are offered solely for your consideration, inquiry and verification and are not, in part or total, to be construed as constituting a warranty or representation for which we assume legal responsibility. Nothing contained herein is to be interpreted as authorization to practice a patented invention without a license. Delta Cooling Towers, Inc. 41 Pine Street ~ PO Box 315 Rockaway, NJ 07866 973/586-2201 / 973/586-2243 fax Average Properties of the Materials of Construction Mechanical Properties: Polyethylene (Shell Material) Test Method Properties 1. Tensile Strength (@ 20m./min.) ASTM D 638 2600-3000 2. Stiffness Modulus ASTM D 747 56-70 X 103 psi 3. Tensile Impact Strength ASTM D 1822 90-130 ft. lb. /in.2 4. Elongation (@ 20in./min.) ASTM D 638 150-350% 5. Vicat Softening Point ASTM D 1525 230°/238°F 6. Deflection Temperature at 66psi ASTM D 648 172°F 7. Brittleness Temperature ASTM D 746 -94°F PVC (Wet Decking & Eliminator Material) Test Method Properties 1. Tensile Strength ASTM D 638 7100 psi 2. Flexural Modulus ASTM D 790 300-500 x 103 psi 3. Izod Impact ASTM D 256 0.73 ft. lb/in. 4. Elongation ASTM D 638 150% 5. Deflection Temperature at 66psi ASTM D 648 155°F 6. Brittleness Temperature ASTM D 746 -15°F PVC (Water Distribution System Material) Test Method Properties 1. Tensile Strength ASTM D 638 7500 psi 2. Flexural Modulus ASTM D 790 560 x 103 psi 3. Izod Impact 140°F ASTM D 256 1.26 ft. lb/in. notch 4. Izod Impact at –40°F ASTM D 256 .035 ft. lb/in. notch 5. Deflection Temperature at 66psi ASTM D 648 169°F Permanence Tests: Test Method Polyethylene PVC 1. Outdoor Weathering ASTM D 1435-65T Complete Protection Excellent 2. Accelerated Weathering ASTM E 42 Very Resistant Very Resistant 3. Normal Exposure to Sunlight Complete Protection Complete Protection 4. Accelerated Exposure to Sunlight FADEOMETER Complete Protection Complete Protection Chemical Properties: Test Method Polyethylene PVC 1. Weak Acids ASTM D 543 Very Resistant No Effect 2. Strong Acids ASTM D 543 None to Slight None to Slight 3. Weak Alkali ASTM D 543 Very Resistant No Effect 4. Strong Alkali ASTM D 543 Very Resistant No Effect 5. Salts ASTM D 543 Resistant No Effect 6. Sea Salts ASTM D 543 Resistant No Effect

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