Industrial / Energy Fluids

XCELTHERM® 315

Economical synthetic thermal oil rated to 550ºF (288ºC) with very high resistance to oxidation as well as high resistance to sludge and fouling.  
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  • Typical Properties

    Key Operating Temperatures
    Maximum Bulk Fluid Operating Temperature 550°F (288°C)
    Maximum Film Temperature 600°F (316°C)
    Flash Point (PMCC)(ASTM D93)(minimum) 356°F (180°C)
    Flash Point (COC)(ASTM D92)(minimum) 347°F (175°C)
    Normal Boiling Point, 10% fraction 667°F (353°C)
    Autoignition Temperature (Minimum) 649°F (343°C)
    Pour Point (Maximum) -76°F (-60°C)
    Pumpability at 300 cSt (mm2/s) 17°F (-8°C)
    Physical Properties
    Composition Radco-engineered alkyl aromatic
    Odor Bland
    Appearance Bright, clear yellow
    Kinematic Viscosity at 40°C (104°F) 21.5 cSt
    Kinematic Viscosity at 100°C (212°F) 4.4 cSt
    Average Molecular weight 320 g/mol
    Moisture Content (maximum) 150 ppm
    Density at 25°C (77°F) 7.20 lbs/gal (863 kg/m3)
    Specific Gravity at 25°C/25°C (77°C/77°C) 0.87
    Critical Pressure 1.42 MPa (14.0 atm)
    Critical Temperature 707°F (375°C)
    Critical Volume 0.069 ft3/lb (4.3 L/kg)
    Coefficient of thermal expansion at 200°C 0.00052/°F (0.00094/°C)
    * Data represents typical laboratory samples and are not guaranteed for all samples

  • Engineering Properties

    Temperature Viscosity Density Enthalpy Thermal Conductivity Vapor Pressure
    °F °C cSt cP lb/ft3 kg/m3 BTU/lb-°F J/g-K BTU/ft-hr-°F W/m-K psia kg/cm2
    -20 -29 1,470 1324 56.22 900.6 0.411 1.72 0.0769 0.1331    
    0 -18 229 205 55.74 892.8 0.421 1.76 0.0763 0.1320    
    20 -7 62.0 54.9 55.25 885.1 0.430 1.80 0.0757 0.1309    
    40 4 24.0 21.1 54.77 877.3 0.440 1.84 0.0750 0.1298    
    60 16 11.8 10.2 54.29 869.6 0.449 1.88 0.0744 0.1286 0.0007 0.0000
    80 27 6.81 5.86 53.80 861.8 0.459 1.92 0.0737 0.1275 0.0010 0.0001
    100 38 4.40 3.76 53.32 854.1 0.468 1.96 0.0731 0.1264 0.0014 0.0001
    120 49 3.09 2.61 52.83 846.3 0.478 2.00 0.0725 0.1253 0.0020 0.0001
    140 60 2.30 1.93 52.35 838.6 0.488 2.04 0.0718 0.1242 0.0028 0.0002
    160 71 1.80 1.49 51.87 830.8 0.497 2.08 0.0712 0.1231 0.0039 0.0003
    180 82 1.46 1.20 51.38 823.1 0.507 2.12 0.0705 0.1220 0.0055 0.0004
    200 93 1.22 0.993 50.90 815.3 0.516 2.16 0.0699 0.1209 0.0078 0.0006
    220 104 1.042 0.841 50.41 807.6 0.526 2.20 0.0692 0.1198 0.0111 0.0008
    240 116 0.910 0.727 49.93 799.8 0.535 2.24 0.0686 0.1186 0.0157 0.0011
    260 127 0.808 0.640 49.45 792.1 0.545 2.28 0.0680 0.1175 0.0222 0.0016
    280 138 0.728 0.571 48.96 784.3 0.554 2.32 0.0673 0.1164 0.0314 0.0022
    300 149 0.664 0.516 48.48 776.6 0.564 2.36 0.0667 0.1153 0.0444 0.0031
    320 160 0.613 0.471 48.00 768.8 0.574 2.40 0.0660 0.1142 0.0628 0.0044
    340 171 0.570 0.434 47.51 761.1 0.583 2.44 0.0654 0.1131 0.0889 0.0062
    360 182 0.535 0.403 47.03 753.3 0.593 2.48 0.0647 0.1120 0.1257 0.0088
    380 193 0.506 0.377 46.54 745.6 0.602 2.52 0.0641 0.1109 0.1777 0.0125
    400 204 0.482 0.355 46.06 737.8 0.612 2.56 0.0635 0.1098 0.2514 0.0177
    420 216 0.461 0.336 45.58 730.0 0.621 2.60 0.0628 0.1086 0.3555 0.0250
    440 227 0.443 0.320 45.09 722.3 0.631 2.64 0.0622 0.1075 0.5029 0.0354
    460 238 0.427 0.305 44.61 714.5 0.640 2.68 0.0615 0.1064 0.7112 0.0500
    480 249 0.414 0.293 44.12 706.8 0.650 2.72 0.0609 0.1053 1.0059 0.0707
    500 260 0.403 0.281 43.64 699.0 0.660 2.76 0.0602 0.1042 1.4227 0.1000
    520 271 0.393 0.271 43.16 691.3 0.669 2.80 0.0596 0.1031 2.0122 0.1415
    540 282 0.384 0.262 42.67 683.5 0.679 2.84 0.0590 0.1020 2.8460 0.2001
    550 288 0.380 0.258 42.43 679.7 0.683 2.86 0.0586 0.1014 3.3846 0.2380
    560 293 0.376 0.254 42.19 675.8 0.688 2.88 0.0583 0.1009 4.0252 0.2830
    580 304 0.369 0.247 41.70 668.0 0.698 2.92 0.0577 0.0998 5.6930 0.4003
    600 316 0.363 0.240 41.22 660.3 0.707 2.96 0.0570 0.0986 8.0518 0.5661
    * Data Represents typical laboratory samples and are not guaranteed for all samples.