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5.1 Comparison with Cast Iron (Traditional Material)Cast iron is the traditional material for machine tool bases, witdvantages in mature processes and controllable costs. However, in high-precision and high-speed machining scenarios, its inherent defects have gradually become a bottleneck. The core differences between granite and c iron are as follows: Characteristic IndexGraniteCast IronAdvantageDensity2.65-3.02 gm³6.8-7.3 g/cm³Granite (lightweight,…