MR-7
OST 38.01445-88
MR-7 is used as cooling lubricants for blade machining, including vending machines and benches, arbon, alloy, stainless and heat resistant steels, as well as some hard-alloys. Limitedly applicable in processing of copper and its alloys. Feeding to the cutting are is performed through irrigation or under the pressure.
| Index name | Norm |
|---|---|
| Flash point in open crucible, °С, not less than | 180 |
| Kinematic viscosity at 100°С, mm2/s | 23-30 |
| Saponifi cation number, mgКОН/g, not less than | 18 |
| Acid number, mg КОН/1g, not more than | 1,2 |
| Color, CNT units, not more than | - |
| Corrosive effect on metals | Pass |
| Mass fraction, %: | |
| - Mechanical impurities, not more than | 0,04 |
| - Water, not more than | None |
| - Sulfur | 1,2-2,0 |
| - Free organic acids, not more than | - |
