Water content, Free alkalis and organic acids, Dropping point, Cone Penetration depth at 250 ºC, Tribological characteristic (Load-wear index, Weld point, Last nonseizure load, Diameter of the Wear Spot). According to ASTM D95, ASTM D128, ASTM D566, ASTM D217, ASTM D2596, ASTM D2266.
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