A premium distillate fuel engineered for high-RPM diesel engines, gas turbines, and industrial burners where rapid combustion and clean burning are critical. Higher cetane, tighter specs, lower contaminants.
High-Speed Diesel (HSD) is a premium middle distillate fuel specifically formulated for applications where standard diesel may not deliver optimal performance. The name refers not to the speed of delivery but to the engine speed — HSD is designed for high-RPM diesel engines operating at 1,500–3,000+ RPM, where fuel must ignite rapidly, burn completely, and leave minimal deposits.
HSD is also the fuel of choice for many gas turbine applications (power generation, mechanical drive), where contaminants that would be acceptable in a slow-speed marine diesel can cause catastrophic damage to turbine blades operating at extreme temperatures.
| Parameter | Typical HSD Specification |
|---|---|
| Cetane Number | ≥ 45 (typical 48–50) |
| Sulfur Content | ≤ 500 ppm (lower available on request) |
| Density at 15°C | 820–860 kg/m³ |
| Distillation IBP (Initial Boiling Pt) | ~170–190°C |
| Distillation T90 | ≤ 360°C |
| Distillation FBP (Final Boiling Pt) | ≤ 385°C |
| Flash Point | ≥ 35°C (typical 40–55°C) — acceptable for industrial use with proper safety controls |
| Kinematic Viscosity at 40°C | 2.0–5.0 mm²/s |
| Carbon Residue (Ramsbottom) | ≤ 0.20% m/m |
| Ash Content | ≤ 0.01% m/m |
| Water Content | ≤ 0.05% v/v (500 ppm) |
| Sediment Content | ≤ 0.01% m/m |
| Copper Strip Corrosion | ≤ Class 1 |
| Appearance | Clear, bright, free of visible contamination |
| Relevant Standards | IS 1460 (India), ASTM D975, or as agreed between buyer and seller |
* HSD specifications vary by application and regional standards. We supply HSD conforming to IS 1460, ASTM D975 No. 1-D or 2-D, or a mutually agreed specification. Please specify your required standard when inquiring.
Generators running at 1,500–3,000 RPM, pumps, compressors, and other high-speed stationary engines. Marine high-speed craft, patrol boats, rescue vessels with engines above 1,000 RPM.
Gas turbines for power generation (open cycle and combined cycle), mechanical drive gas turbines for pipeline compressors and pump drives, aero-derivative gas turbines in industrial and marine applications.
Industrial furnaces and kilns requiring clean-burning fuel, asphalt plants (rotary dryers), industrial drying operations, high-temperature process heating where fuel contaminants would damage burner nozzles.
Rail traction engines and locomotive diesel engines where HSD is the manufacturer-specified fuel grade.
Modern excavators, wheel loaders, and construction equipment where the manufacturer specifies HSD-grade fuel for high-speed engines.
As a blending component for specialized fuel formulations, industrial equipment cleaning solvent (where appropriate), feedstock for certain chemical processes.
Tell us your required specification standard (IS 1460, ASTM D975, or custom) and we'll quote within hours.
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