Material: Continuous Cast Grey Iron Hollow Bar GG25/GG30

Size:OD60-320mm

Cross-section: Round, Square, Hexagon...

Advantages:

Zero casting defect, free machining,superior wear resistance, widely used in cylinder sleeve, bearing, bushing,spacer etc.

Material Grade Chemical Composition (%) Tensile Strength(Mpa) Hardness(HB)
C Si Mn P S
GG25 2.6-3.5 2.2-3.0 0.5-0.8 ≤0.07 ≤0.03 230-300 170-230
GG30 2.6-3.5 2.2-3.2 0.6-1.2 ≤0.07 ≤0.03 280-350 200-240