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Shock absorber rod guide is made by powder pressing and sintering (Powder Metallurgy) technology.Some types will be inserted red PTFE DP4 sliding bushing in the inner diameter and do black steam oxidation depends on requirements.?Technical information:1.??? Material: MPIF 35 FC - 0205Equivalent material: DIN 30910 - Sint C102.??? Chemical compositionDesignationFeCuCFC - 0205Balance1.5-3.9%0.3-0.6%?3.??? Hardness range: HRB 40 – 100 Before black oxidation (around 50 HRB) After black oxidation (around 85 HRB)4.??? Density range: 6.3-6.9 g/cm3 5.??? Possible tolerance for ID: 0.03 mm, for OD: 0.05 mm6.??? General tolerance: ISO 2768 – m7.??? Degree of oxidation: 2-5%, thickness 0.003-0.005 mm Fe3O4??Packing of shock absorber rod guide: 1.??? Rolled by anti-rust kraft paper, 5 or 10 pcs per roller / Plastic blister packing2.??? Neutral standard carton or to your choice3.??? Wooden boxes or pallets?Process flow of shock absorber rod guide:Powder mixing – Pressing – Sintering – Sizing – Ultrasonic cleaning – Steam oxidation – Oil impregnation – Final inspection – Packing – Storage?Quality control of shock absorber rod guide:Work instruction paper and pictures at each working positionProcess flow card with each tray (Fully traceability)Sampling inspection and routing inspectionTS:16949 5 tools: PPAP, APQP, FMEA, SPC, MSADimensional report as per your requirement by CMM, projector, etc