Product Description
KATMOTO HEAT TRANSFER OIL is a high-stability heat transfer (thermal) oil to L-QB, based on ISO VG 32 fluidity, for closed indirect heating systems. Its highly refined, thermally stable formulation provides efficient heat transfer with excellent resistance to thermal cracking, oxidation and coking, low vapour pressure and high flash and autoignition temperatures for safe, reliable and long-life operation in thermal-fluid circulation systems.
Key Performance Features
| High thermal stability
resists thermal cracking and coking at high bulk operating temperatures. |
Efficient heat transfer
low viscosity and good thermal conductivity for fast, even heat transfer. |
| Oxidation resistance
resists oxidation and sludge for long fluid life in closed systems. |
High flash & autoignition
high flash and autoignition temperatures for safe operation. |
| Low deposit formation
minimises coke and deposits on heater surfaces. |
Long fluid life
stable performance reduces fluid replacement and maintenance. |
Applications & Performance Level
| Applications | Closed, indirect heat-transfer (thermal oil) systems in process heating, with forced circulation and bulk temperatures up to about 320°C, requiring an L-QB thermal oil. |
| Specification | L-QB (thermal oil) — heat-transfer oil classification for closed indirect heating. DIN 51522 (Q) — heat-transfer fluid standard. High thermal stability — resists cracking and coking at high bulk temperatures. High flash / autoignition — safe high-temperature operation. Forced-circulation systems — suitable for closed forced-circulation thermal systems. |
| OEM Suitability | Closed thermal-oil heating systems operating up to about 320°C bulk temperature requiring an L-QB heat-transfer oil. Follow the heater/system manufacturer’s maximum film and bulk temperature limits. |
| Important Notice | Observe the system’s maximum bulk and film temperature limits and ensure proper circulation. ”Suitable for” does not mean official approval unless separately certified. |
| Property | Test Method | Target Typical Value |
| Appearance / Color | Visual | Clear bright liquid |
| ISO Viscosity Grade | ISO 3448 | ISO VG 32 |
| Kinematic Viscosity @ 40°C | ASTM D445 | 32 mm²/s |
| Kinematic Viscosity @ 100°C | ASTM D445 | 5.4 mm²/s |
| Viscosity Index | ASTM D2270 | 105 |
| Flash Point, COC | ASTM D92 | ≥ 210°C |
| Fire Point | ASTM D92 | ≥ 230°C |
| Autoignition Temperature | ASTM E659 | ≥ 350°C |
| Pour Point | ASTM D97 | -12°C |
| Max. Bulk Temperature | — | 320°C |
| Conradson Carbon Residue | ASTM D189 | ≤ 0.05 % mass |
| Copper Corrosion | ASTM D130 | 1a |
Note: The target values above are typical product values for reference only; final production data is subject to the official KATMOTO Technical Data Sheet (TDS) and laboratory test report.
