HFRR標準試樣包含有100個上部試樣和100個下部試樣。上部試樣為一個直徑6mm的球體，裝入上部試樣座內，下部試樣為10mm的圓盤，裝入下部試樣座內。符合標準 ISO 12156-1、ASTM D6079、ASTM D7688和IP450《柴油標準測試法》，SH/T 0765-2005柴油潤滑性評定法(高頻往復試驗機法)。每批產品都經過多次檢驗，并附有合格證。
· This standard specimen pack comprises 100 upper and 100 lower specimens for use in the HFRR and are manufactured to comply with ISO and ASTM standards.
· Upper Specimen (Ball)
· The upper specimen is specified to grade 28 (ANSI B3.12), ANSI E-52100 steel, with a Rockwell hardness “C” scale (HRC) number of 58-66 (ISO 6508), and a surface finish of less than 0.05 μm Ra.
· Lower Specimen (Disc)
· The lower specimen is specified to AISI E-52100 steel machined from annealed rod, with Vickers hardness “HV30” scale number of 190-210 (ISO 6507/1). It is turned, lapped and polished to a surface finish of less than 0.02μm Ra.
HFRR standard specimens are sold as a pack of 100 upper and 100 lower specimens. The upper specimen is a 6mm diameter ball that is loaded into the upper specimen holder and the lower specimen is a 10mm disc that is loaded into the lower specimen holder.