EP additive; low viscosity, light coloured, active sulphur carrier
| Composition / Property | Value |
|---|---|
| Composition | dialkylpentasulphide |
| Appearance | light coloured, low viscosity liquid |
| Colour (ASTM-D 1500) | typ. 2.5 |
| Sulphur | approx. 40 % weight |
| Active sulphur (ASTM-D 1662) | approx. 36 % weight |
| Copper corrosion (ASTM-D 130) 2.5 % weight Additin RC 2540 in a paraffinic base oil, 3 h/100 °C |
3b - 4b |
| Viscosity, 40 °C (ASTM-D 445) | approx. 45 mm²/s |
| Density, 20 °C (ASTM-D 1298) | approx. 1.0 g/l |
| Flash point, COC (ASTM-D 92) | approx. 150 °C |
- water miscible metalworking fluids
- neat metalworking fluids
The use of Additin RC 2540 is a good alternative to the sulphurization of base oils with elementary sulphur. In addition, Additin RC 2540 shows with increasing temperatures a steadily increasing active sulphur level (up to max. 38 %) resulting in an effective EP activity at only slightly elevated temperatures (50 to 60 °C). Additin RC 2540 can be successfully combined with other sulphur carriers such as Additin RC 2415 in order to increase EP activity.
The antiwear effect is improved by combination of Additin RC 2540 with zinc dithiophosphates, e.g. Additin RC 3038, phosphoric acid partial esters or ashless phosphorus-sulphur additives e.g. RC 3880.
Soluble in mineral oils and synthetic base oils. However, it is necessary to verify the solubility in the base oils used and the compatibility with other additives.
| Paraffinic base oil, ISO VG 15 | base oil, no additives | + 2 % b. w. RC 2540 | + 5 % b. w. RC 2540 | + 10 % b. w. RC 2540 | + 15 % b. w. RC 2540 |
|---|---|---|---|---|---|
| Four-ball test (DIN 51350, part 2) weld load |
600 - 700 N | 2200 - 2400 N | 2400 - 2600 N | 2600 - 2800 N | 2800 - 3000 N |
| Four-ball test (DIN 51350, part 3) 1 h/300 N scar diameter |
0.70 mm | 0.80 mm | 1.00 mm | 1.20 mm | 1.50 mm |
| Four-ball test (ASTM D-2783) weld point LWI |
320 kg 53 kg |
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| Load-carrying test according to Brugger load capacity | < 20 N/mm² | approx. 65 N/mm² | approx. 65 N/mm² | approx. 65 N/mm² | approx. 80 N/mm² |
| Falex Pin and Vee ASTM D-2670-88 load value |
3500 lbs | 4500 lbs |
200 kg bunghole drums
Storage temperature: approx. 20 °C; protect from heat and frost! Shelf life: approx. 12 months
Consult material safety data Sheet (MSDS) for additional handling information on Additin RC 2540.