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    Grease was the Word. Now it's HPM

    It's got groove, it's got meaning - and NLGI has worked on a new specification for premium tier, high performance multiuse greases.  Stay ahead of the formulating curve with Afton's performance additive technology. 
     

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High Performance Multiuse (HPM) Grease Specification


While the GC-LB Mark specification was originally intended to specify quality for greases used in automotive chasses and wheel bearings, since its inception in 1989 GC-LB Mark has become an indication of high-quality grease in various applications. Because of advancements in materials, technologies, and applications, NLGI recognizes that there is a growing need in the market for higher performing greases.
 
NLGI is finalizing a new specification to supplement GC-LB with a set of classifications for High Performance Multiuse (HPM) greases. The HPM Core specification focuses on a set of performance areas that are common to many applications. Recognizing the diverse operating conditions and applications for grease, enhanced performance subcategories have been chosen to meet particular needs.

HPM Performance Subcategories

The performance subcategories captured within the NLGI specification are as follows; Water Resistance (WR), Load Carrying Capability (HL), Salt Water Corrosion Resistance (CR), and Low Temperature Performance (LT). 
 
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The performance tests and proposed limits for these performance subcategories are shown in more detail below. The enhanced performance subcategories must meet the core HPM specification as well. Additional performance subcategories may be developed in the future to address other common grease lubrication needs.
    Test Name 
    Method
    GC LB
    ASTM
    D4950
    HPM
    Core
    (CR)
    (HL)
    (WR)
    (LT)
    Worked-60 Pen (dmm)
    D217
    220-340
    220-340
         
    Rust Prevention
    D1743
    Pass
    Pass
      
       
    Bearing Rust
    (10% SSW) 
    D5969
      
    Pass
       
    Emcor Rust Test (distilled water)
    D6138
     
    0,1
        
    Emcor Rust
    (100% SSW)
    D6138
      
    1,2
       
    Emcor Rust
    (0.5 N NaCl solution)
    D6138
      
    2,3
       
    Four-Ball Wear, max
    D2266
    0.6 mm
    0.60
     
    0.50
      
    Four-Ball Wear, min
    D2596
    200 kgf
    250
     
    400
       
    Four-Ball LWI, min
    D2596
    30 kgf
           
    SRV step Load (procedure B at 80°C)
    D5706
       
    800
      
    Fretting Wear
    (weight loss)
    D4170
       
    5
      
    Fretting Wear Scar by SRV
    D7594
       
    0.500
      
    Fretting Protection, max
    D4170
    10 mg
         
    Dropping Point, min °C (°F)
    D566/D2265
    220°C (428°F) 
          
    High Temp Life, max (hrs)
    D3527
    80 hrs
      
        
    Oxid. Stability, 100 hrs.100°C ΔkPa (psi))
    D942
     
    35 (4.9)
        
    Copper Corrosion, 24 hrs, 100°C max
    D4048
     
    1b
        
    CR Volume Change
    D4289
    0 to 40
          
    CR Hardness Change
    D4289
    -15 to 0
          
    NBR Volume Change (Δ vol%)
    D4289
    -5 to 30
         
    NBR Hardness Change (Δ Hardness)
    D4289
    -15 to 2
          
    NBR (ISO 13226) 168 hours, 125°C 
    D4289
     
    -15 to +2
         
          (ΔVol%)
    D4289
     
    -5 to +30
           
    Prolonged worked penetration (Δ100k)
    D217
     
    +/- 30
          
    Water Washout, % loss, max
    D1264
    15 wt%
    10 wt%
       
    5 wt%
     
    Water spray off, max
    D4049
         
    40 wt%
     
    Wet roll stability (2 hrs, RT)
    D8022
         
    +/- 15 Δ%
     
    High temp bleed (30 hrs, 100°C)
    D6184
          
    Roll stability (2 hrs,RT)
    D1831
           
    Oil Separation (24 hrs, 25°C)
    D1742
    6 wt%
          
    Leakage, grams loss
    D4290
    10g
          
    Low Temp Torque Ball Bearing, -20°C
    D1478
          
    Starting Torque, max 
    1000 mNm
         
    Running Torque, max 
    100 mNm
         
    Low Temp Torque (-40°C)
    D4693
           
    Low Temp Torque Ball Bearing, -30°C
    D1478
           
    Starting torque, max       
    1,000 mNm
    Running Torque, max       
    100 mNm
    U.S. Steel Mobility, -20°C, min
    LT-37
          
    10 g/min
    Low Temp Flow (Kesternich) -30°C
    DIN 51805-2
          
    1400 mbar

Afton Grease Additive Solutions


Afton Chemical specializes in specialty additive components and packages for formulating a range of performance greases. Afton is familiar with the challenges facing formulators

evaluating

a new HPM certified grease, and is happy to help you and your team navigate these hurdles.

Individual Components


Package Additives


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    HiTEC® 552H

    Antiwear & Antioxidant

    • Great Wear Protection
    • Enhanced Oxid. Stability
    • Does Not Effect Thickener

    View the HiTEC® 552H ►

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    HiTEC® 553

    High Temp Corrosion

    • Ashless Chemistry
    • Excellent EP/AW Protection
    • Stable at High Temps

    View the HiTEC® 553 ►

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    HiTEC® 343G

    Extreme Pressure & Wear

    • Great EP/AW Durability 
    • Great Corrosion Prevention 
    • Expand Blending Flexibility  

    View the HiTEC® 343G ►

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