white cast iron vs. ductile iron

i'm looking at using a cast iron material for a high wear component. The wear is occuring where one component overlaps another and sits on it for support. On top of the this, there is probably 100-200 pounds of wood sitting on top.

I was told to look at ductile iron, but I think that a high chrome white iron might be better. Can anyone give me any sort of cost comparison on the two? I would like to contact our supplier to ask them as well, but I'm not sure yet what grade of white iron I should be looking at, any suggestions? Is the top grade of white iron overkill? Has anyone ever used both of these for the same application, and if you did which worked better?

Operating temperature is probably less than 200 deg. C. We currently use 297 HH which is wearing too quickly, but we use continue to use it now because these same components are also used for high temp applications.

The wear we see now is only where metal rests on either another components or on a wear plate below made of HSS.

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Ductile iron, also known as nodular cast iron or spheroidal graphite iron, stands out for its remarkable properties in the realm of metallurgy. Ductile iron is a type of cast iron alloy distinguished by its nodular graphite inclusions, providing it with enhanced ductility and toughness. Unlike traditional brittle cast iron, ductile iron exhibits a more malleable nature, making it adaptable to a variety of applications.

A. Advantages Of Ductile Iron

I. High Strength and Durability

Ductile iron exhibits impressive tensile strength, providing robustness and durability in applications subjected to heavy loads and stress.

II. Improved Ductility

Unlike traditional cast iron, ductile iron is more ductile and less brittle, allowing it to deform without fracturing. This enhanced ductility makes it resilient to sudden impacts and vibrations.

III. Excellent Machinability

Ductile iron's machinability is a key advantage, facilitating ease of shaping, cutting, and finishing during the manufacturing process. This makes it a preferred material for various components in the automotive and machinery industries.

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IV. Corrosion Resistance

Ductile iron's resistance to corrosion, particularly in aggressive environments such as water and sewage systems, enhances its longevity and reduces maintenance costs.

V. Cost-Effective

The cost-effectiveness of ductile iron lies in its combination of strength, durability, and ease of production. It provides a cost-efficient alternative for applications requiring the benefits of iron without sacrificing performance.

VI. Cost-Effective

Ductile iron finds applications in a wide range of industries, including construction, agriculture, automotive, and water infrastructure. Its versatility makes it suitable for diverse engineering projects.

VII. Fatigue Resistance

The ability of ductile iron to withstand cyclic loading without succumbing to fatigue failure makes it ideal for structures and components exposed to dynamic forces over time.

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