Metal Finishing

Application

A superior high performance energy efficient heat transfer fluid suitable for use in all kinds of industrial processes.

About Globaltherm® M

Made from highly refined base stocks, Globaltherm^® M thermal fluid has excellent thermal and oxidation stability allowing operation at high temperatures for extended periods.

The fluid also has efficient thermal conductivity and low viscosity, at the relevant operating temperatures, ensure high heat transfer rates requiring limited pumping energy.

Globaltherm^® M heat transfer fluid provides:

• low vapour pressures at elevated temperatures

• greatly reduced evaporation

• vapour lock and cavitation eliminating the need for high pressure piping and equipment

Used fluid may be disposed of through a number of environmentally acceptable methods such as used oil recycling or heavy fuels burning.

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Parameter	Unit	Code (ASTM / ISO)	Result
Operating Range	°C (°F)	N/A	-10 to 320 (14 to 608)
Appearance	N/A	N/A	Viscous clear-yellow liquid with a mild odour.
Density @ 25°C	kg/m³	ASTM D4052	873
Kin. Viscosity 40°C	mm²/s (cSt)	ASTM D445	29.8
Kin. Viscosity 100°C	mm²/s (cSt)	ASTM D445	4.5
Flash Point PMC	°C	ASTM D93	210
Flash Point COC	°C	ASTM D92	230
Coefficient of Thermal Expansion	°C	NTR	0.00077/°C
Autoignition Point	°C	ASTM E659	360
Pour Point	°C	ISO 3016	-12
Neutralisation Nr (acid), TAN	mgKOH/g	ASTM D974	<0.05
Maximum Bulk Temperature	°C	NTR	320
Maximum Film Temperature	°C	NTR	340
Boiling Point at 1013 mbar	°C	NTR	365
Average Molecular Weight	NTR	NTR	400
Moisture Content	PPM	ASTM D6304	<100

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Contact us for more information on high temperature thermal oils

We provide advice on how to choose the most appropriate oil for your heat transfer applications and provide our customers with continued technical support.

Call us on +44 (0)1785 760555 for more information

Using Globaltherm® MXT

• Globaltherm^® MXT Heat transfer oil contains a highly resilient blend of additives resistant to sludging and ensures long-lasting and trouble-free service when managed correctly
• This heat transfer oil is a mineral based liquid phase heat transfer oil used for operating at bulk temperatures between -7°C and 320°C in both open and closed circulation.
• Globaltherm® MXT heat transfer oil is resistant to the oxidation and thermal cracking found in many industrial processing environments, including; chemical, pharmaceutical, plastics, paper, wood and textiles.
• Globaltherm® MXT Heat transfer oil is non-toxic and non-corrosive.
• This Heat transfer oil is suitable for a range of indirect open and closed liquid phase industrial heat transfer systems.
• Used oil may be disposed of through a number of environmentally acceptable methods such as used oil recycling or heavy fuels burning.

Talk to us about our all-inclusive reprocessing services.

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Contact us for more information on high temperature thermal oils

We provide advice on how to choose the most appropriate oil for your heat transfer applications and provide our customers with continued technical support.

Call us on +44 (0)1785 760555 for more information

Metal finishing applications require high temperatures for extended periods of time. As a consequence, it’s important to select a thermal fluid with good thermal stability.

All thermal oils tend to degrade over time, since at high temperatures, the bonds between hydrocarbon chains start to break and produce carbon in a process called fouling. As the concentration of carbon increases, it can deposit sludge into the pipes and reduce the efficiency of the entire system.

A thermal fluid with a high thermal stability can resist high temperatures and occasional temperature peaks. This can slow down degradation and prevent the formation of sludge.

It’s also important to choose a heat transfer fluid with a high flash point, the temperature at which a fluid produces enough vapour to be ignited. Over time, the molecules in a thermal oil will break down in a process called thermal cracking, creating volatile light ends. These cause the flash point to drop, increasing the risk of fire. Thermal oil condition monitoring is essential to maintain a safe site and ensure system availability.

Global Heat transfer can help you determine which thermal oil is best for you and will support you in monitoring the efficiency of your heat transfer process via regular sampling and engineer visits.

Like all industries, businesses in the metal finishing sector are tying to be more environmentally friendly to reduce their impact on the planet and avoid ever-increasing environmental fines. To reach this goal, it is paramount to be as thermally efficient as possible.

Subscribing to a proactive maintenance plan such as Global Heat Transfer’s Thermocare is important to guarantee that your heat transfer system is running efficiently. This includes regular system analysis, fluid top-ups and flashpoint and fouling management.

The DSEAR and ATEX regulations protect workers against risks from fire, explosion and similar events arising from dangerous substances present in the workplace, including thermal fluids. These regulations apply to all industries that use heat transfer systems, and employers in the metal finishing sector must be aware of them.

At Global Heat Transfer, our expert team will be able to advise you on how to comply with relevant laws in relation to thermal fluid management.