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High Performance Multiuse Grease (HPM)

MOLYKOTE® "101" - HPM Specification

NLGI has been hard at work to establish a baseline for the next generation of performance lubrication.  The HPM (High Performance Multiuse) specification is the future of greases and will be the go-to solution for a range of lubrication requirements.

MOLYKOTE® "101" - High Performance Multiuse Greases 


Greases make the industrial world "go-round" and provide protection to critical, bearing, gear, and sliding components in a broad range of equipment types. However, it wasn't until November 2020 that the NLGI (National Lubricating Grease Institute) created a baseline for "challenging, but achievable" top-tier lubricant performance - the High Performance Multiuse or HPM Specification. 
 
In the 101-style webinar recording below, the DuPont team behind the MOLYKOTE® Performance Products break down the basics of proper grease lubrication, selection, and the performance standards under the new Multipurpose Grease specification. 

HPM Performance Classifications 


There are a few distinct levels of performance under the HPM grease specification, and each classification delivers specialty performance for truly challenging applications. The base-level of performance is met under the "Core" grease specification, which encompasses seven common testing methods under the GC-LB specification - and include water washout, cone penetration, elastomer compatibility, oil separation, 4-ball wear, 4-ball EP and corrosion prevention.
 
There are 4 additional certification tags that provide additional grease performance in extreme applications and environments. HPM+WR for enhanced water resistance, HPM+CR for salt water corrosion resistance, HPM+HL for extreme high loads, and HPM+LT for incredibly low temperature operation.

NLGI HPM Performance Classifications 

Corrosion Resistance

The HPM+CR specification requires exceptional performance in environments with high humidity or salt-water exposure.  Grease that meets the HPM+CR certification must pass the following test methods:
 

  • ASTM D5969 Saltwater Rust
  • ASTM D6143 EMCOR Rust twice, under 100% synthetic sea-water and under a solution of 0.5N NaCL

Low Temperature

The HPM+LT specification requires grease performance in incredibly low temperature environments.  Grease that meets the HPM+LT certification must pass the following test methods: 
 

  • ASTM D1478 Low Temperature Torque of Ball Bearing Grease in extremes colder than -20°C

Water Resistance

The HPM+WR specification requires exceptional performance in wet environments with the potential for direct water spray or washoff. Grease that meets the HPM+WR certification must pass the following test methods:
 

  • ASTM D1264 Water Washout with stricter failure limits
  • ASTM D4049 Water Spray Off
  • ASTM D8022 Wet Roll Stability

High Loads

The HPM+HL specification requires incredible grease stability & performance under extreme heavy loads. Grease that meets the HPM+HL certification must pass the following test methods:
 

  • ASTM D2266/ASTM D4049 4-Ball Wear and 4-Ball EP with stricter failure limits
  • ASTM D5706/ASTM D7594 Extreme Pressure Properties and Fretting Wear by SRV machine
  • ASTM D4170 Fretting Wear by FAFNIR test

Each of these additional NLGI HPM "luggage tags" or specification tags can be added separately, or in combination with each other.  For example a grease can meet the HPM+WR+LT performance requirements for resistance & stability benchmarks.  Lubricant manufacturers face a demanding challenge to meet or exceed the performance standards laid out by these HPM testing standards. 
 

MOLYKOTE® HPM Grease Solutions


MOLYKOTE® Multilub High Performance Grease 
HPM+LT

 

This grease meets the incredibly strict performance requirements under NLGI HPM+LT, for high performance multi-use grease at extreme low temperature operation. 
 

Base Oil Mineral Oil
NLGI Grade 2
Low Temp -13°F (-25°C)
High Temp 248°C (120°C)
Performance Additives Extreme Pressure (EP)
Corrosion Inhibitors (CI)
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