Conversion Factors

Use the following tables to easily determine the best cooling component for your application. Material Properties¹ Material  Cp: Specific Heat  p: Density  K: Thermal Conductivity  BTU/lb°F  J/kg°C  lbs/ft3  kg/m3  BTU/hr ft °F  W/m°C  AIR (STP) 0.24 1,006 0.07 1.2 0.01 0.017 ALUMINUM, 6061 0.23 896 169 2700 104 180 COPPER, 110 0.09 377 558 8940 226 391 COOLANOL 25 0.44 1,838 56.4 903 0.07 0.12 DIALA-X® 0.44 1,840 54.3 870 0.08 0.14 20/80 EGW SOLUTION 0.93 3,817 63.9 1023 0.33 0.57 40/60 EGW SOLUTION 0.84 3,470 65.7 1052 0.26 0.45 50/50 EGW SOLUTION 0.78 3,283 66.4 1064 0.23 0.39 FLUORINERT®, FC-77 0.25 1,028 110.6 1771 0.036 0.063 HYDRAULIC OIL² 0.44 1,842 54.2 868 0.07 0.12 MIL-H-5606 0.46 1,924 52.5 842 0.08 0.14 MIL-L-23699 0.44 1,830 61.1 980 0.08 0.14 POLYALPHAOLEFIN (PAO) 0.52 2,180 49.6 794 0.08 0.14 SAE 10W OIL 0.45 1,901 54.6 875 0.07 0.12 SAE 30W OIL 0.45 1,901 54.6 875 0.07 0.12 STAINLESS STEEL, 316 0.12 500 501 8025 9.40 16.20 WATER 1.00 4,184 62.3 998 0.34 0.59 ¹At 20 °C   ² Typical Conversion Factors MULTIPLY BY TO OBTAIN Watts 3.412 BTU/hr Watts/°C 1.896 BTU/hr°F Horsepower 745 Watts CFM (Cubic Feet per Minute) 0.028 m³/min PSI (Pounds per Square Inch) 0.069 Bars PSI (Pounds per Square Inch) 27.68 Inches of Water GPM (Gallons per Minute) 3.785 LPM (Liters per Minute) Ft³ (Cubic Feet) 7.48 Gallons Pressure Head (Feet of Water) 0.434 PSIG Inches of Water 249 Pascals In. (Inches) 25.4 mm (millimeters) lbs (Pounds) 0.454 kg (kilograms) Tons of Refrigeration 12,000 BTU/Hr °F (Fahrenheit) 5/9 (°F-32) °C °C (Celsius) (1.8 x °C)+32 °F Cp (BTU/lb°F) 4.18 J/kg°C Density (lb/ft³) 16.018 kg/m³ ΔT (°C) 1.8 ΔT (°F) Mass Flow (lb/hr) 0.000126 kg/sec Temperature Conversion °C °F -40 -40 -30 -22 -20 -4 -10 14 0 32 10 50 20 68 30 86 40 104 50 122 60 140 70 158 80 176 90 194 100 212 110 230 120 248 130 266 140 284 150 302 160 320 170 338 180 356