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Let's talk about vermicular graphite cast iron.

The chemical structure of vermicular graphite cast iron is similar to that of gray cast iron, but the overall mechanical properties are slightly better than gray cast iron, but slightly inferior to nodular cast iron. Its impact toughness, elongation, compressive strength, yield strength, etc.are all between the two, and the change in wall thickness has a smaller effect on the mechanical properties than gray cast iron.

Vermicular graphite cast iron is much less sensitive to the cooling rate than gray cast iron, and has good thermal con ductivity, so it is often used to manufacture parts with harsh working environment temperatures and relatively large temperature gradients. Because the compacted graphite cast iron material has high strength, good compactness, low sensitivity to notches, and good process performance, it can be used to manufacture large parts with complex geometric shapes.

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