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NuTherm™ HC-30 High performance, Potassium Formate/Water-based closed system heat transfer fluid ideal for low temperature applications

  • Heat transfer in open system
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Specifications
  • Primary Application: Heat transfer fluid
  • Water based: Yes
  • Key ingredient: Potassium Formate
  • Specific Gravity (g/cm3): 1.275
  • Boiling Point: 112°C (234°F)
  • Freezing Point: -40°C (-40°F)
  • Lowest Op. Temp.: -30°C (-22°F)
  • System: Closed
Description:
NuTherm™ HC-30 is a high-performance heat transfer fluid designed as an alternative to less effective glycol, PAG, and Calcium Chloride open bath fluids.  NuTherm HC-30 is non-toxic, non-flammable, and has a robust corrosion inhibition package making it ideal for use in closed systems down to -30°C (-22 °F) and up to 218 °C (425 °F). 

NuTherm HC-30 has superior thermophysical properties in comparison to traditional closed system heat transfer fluids, including higher thermal conductivity and specific heat, as well as lower viscosity, making it an extraordinarily more efficient closed system coolant within its operational temperature range.  NuTherm HC-30 is non-hazardous, biodegradable, CFC-free, antimicrobial, and has exceptional thermal stability at high temperatures in comparison to glycols, PAG’s, Calcium Chloride, Trichloroethylene and Methylene Chloride (Dichloromethane) making it an intelligent alternative.  NuTherm HC-30 is formulated with a incredibly robust and efficient corrosion inhibition package, allowing the product to be used on most metals including Stainless Steel, Carbon Steel, Cast Steel, Copper and its alloys (Brass & Bronze), Monel, Nickel, Hastelloy, Inconel, Tantalum, Titanium, Titanium alloys (Ti6Al4V), Aluminium and Cast Iron.  Do not use on Zinc, Zinc-plated or galvanized metals, Magnesium.  NuTherm HC-30 corrosion tests at 80 °C show incredible results of x mmpy (x mpy) on C260 Brass alloys, x mmpy (x mpy) on 304L Stainless Steel, and x mmpy (x mpy) on AL1100 Aluminium.  NuThem HC-30 does not produce pitting corrosion on Aluminium alloys like other Potassium Formate open bath heat transfer fluids.

*mmpy = millimeters per year; mpy = mils per year (1 mil = 0.001 inch); In general, uniform corrosion rates less than 2 mpy are acceptable for most applications.  Corrosion rates between 2 and 10 mpy are considered marginal and may impact useful life of the equipment.  Corrosion rates greater than 10 Mils per year are unacceptable.

NuTherm HC-30  
BULK DENSITY 10.64 #/gal
SPECIFIC GRAVITY @ 20 °C 1.275 g/cm³  
TEMPERATURE RANGE (CLOSED SYSTEM) -30 to 218°C (-22 to 425°F)
THERMAL STABILITY HIGH
ODOR ODORLESS  
FLASH POINT (°C) NONE
FIRE POINT (°C) NONE
MELTING POINT / FREEZING POINT   -40°C (-40°F)  
BOILING POINT   112°C (234°F)
pH    8.0 to 8.5
APPEARANCE and COLOR    CLEAR, COLORLESS to AMBER
 
Temperature (°F) Viscosity (cPs) Thermal Conductivity (BTU/hr•ft•°F) Specific Heat (BTU/lb•°F) Density (lb/ft3)
-22 6.99 0.276 0.708 81.0
-20 6.80 0.276 0.708 81.0
0 5.30 0.283 0.714 80.6
20 4.20 0.289 0.721 80.3
40 3.40 0.296 0.727 79.9
60 2.70 0.302 0.733 79.6
80 2.30 0.309 0.739 79.2
100 1.90 0.316 0.745 78.9
120 1.60 0.322 0.751 78.5
140 1.40 0.329 0.757 78.2
160 1.20 0.335 0.763 77.8
180 1.10 0.342 0.770 77.5
200 0.95 0.348 0.776 77.1
220 0.85 0.355 0.782 76.8
240 0.76 0.361 0.788 76.4
260 0.69 0.368 0.794 76.0
280 0.62 0.374 0.800 75.7
300 0.57 0.381 0.806 75.3
320 0.52 0.387 0.812 75.0
340 0.48 0.394 0.819 74.6
360 0.44 0.400 0.825 74.3
380 0.41 0.407 0.831 73.9
400 0.38 0.414 0.837 73.6
420 0.36 0.420 0.843 73.2
425 0.35 0.422 0.845 73.1
Temperature (°C) Viscosity (mPa•s) Thermal Conductivity (W/m•K) Specific Heat (kJ/kg•K) Density (kg/m3)
-30 7.00 0.469 2.961 1300
-20 5.50 0.479 2.984 1295
-10 4.50 0.489 3.007 1290
0 3.70 0.499 3.031 1285
10 3.00 0.509 3.054 1280
20 2.50 0.519 3.077 1275
30 2.20 0.529 3.100 1270
40 1.90 0.539 3.123 1265
50 1.60 0.549 3.146 1260
60 1.40 0.559 3.136 1255
70 1.30 0.569 3.192 1250
80 1.10 0.579 3.215 1244
90 0.99 0.589 3.238 1239
100 0.89 0.599 3.262 1234
110 0.80 0.609 3.285 1229
120 0.73 0.619 3.308 1224
130 0.67 0.629 3.331 1219
140 0.61 0.639 3.354 1214
150 0.57 0.649 3.377 1209
160 0.52 0.659 3.400 1204
170 0.48 0.669 3.423 1199
180 0.45 0.679 3.446 1193
190 0.42 0.689 .3.469 1188
200 0.39 0.699 3.493 1183
210 0.37 0.709 3.516 1178

Vapor Pressure

Temperature (°C) Temperature (°F) Vapor Pressure (psia)
20 68 0.26
30 86 0.35
40 104 0.58
50 122 1.04
60 140 1.81
70 158 2.99
80 176 4.69
90 194 7.06
100 212 10.3
110 230 14.5
120 248 20.0
130 266 27.0
140 284 35.9
150 302 47.1
160 320 61.0
170 338 78.2
180 356 99.2
190 374 124.6
200 392 155.4
210 410 192.2
218 424 226.6

Gasket & Polymer Compatibility

Material Compatibility
Nitrile / NBR Excellent to 150°F, Good above 150°F
Hydrogenated Nitrile / HNBR Excellent
Ethylene Propylene / EP, EPDM Excellent
Chloropropene Good
Isobutylene / IIR Latex Good
Synthetic Isoprene / NR (Natural Rubber) Good / Excellent
Natural Isoprene / NR (Natural Rubber Good / Excellent
Chemraz Kalrez / FFKM Excellent
PTEF / FEP (Teflon) Excellent
Gylon Style 3500,3504, 3510 Excellent
Nylon / Polyamide Good / Excellent
Polyvinyl Chloride / PVC Good / Excellent
Polyethylene Excellent
Polypropylene Excellent
Epoxy Good / Excellent
Graphite Excellent

Metals Compatibility (Closed System)

Material Compatibility
Aluminium* Compatible
Cast Steel Compatible
Monel Compatible
Brass Compatible
Copper Compatible
Nickel Compatible
Bronze Compatible
Hastelloy Compatible
Stainless Steel Compatible
Carbon Steel Compatible
Inconel Compatible
Tantalum Compatible
Cast Iron* Compatible
Incoloy 825 Compatible
Titanium Compatible
Ti6Al4V Compatible
Zinc** Incompatible
Zinc Plating** Incompatible
Galvanized Surfaces** Incompatible
Magnesium** Incompatible


*Recommended for use only in closed, airtight systems that have been purged with an inert gas, such as Nitrogen, in the headspace. 

**May be used for support framing, electrical conduit, and structural components.  If product spills or splashes on any metals, rinse immediately with water to prevent surface discoloration.

***Gylon® is a registered trademark of Garlock which is an Enpro Industries, Inc. company.

NuTherm™ HC-30 high-performance heat transfer fluid designed as an alternative to less effective glycol, PAG, and Calcium Chloride open bath fluids.