Gray cast iron (also referred to as cast gray iron or cast iron gray) is one of the most widely used cast iron alloys in industrial manufacturing.
It is an iron–carbon alloy containing a high percentage of carbon and silicon, where carbon appears in the form of lamellar graphite flakes. These graphite flakes give the fracture surface its characteristic gray color, which is the origin of the name gray cast iron.
Gray cast iron is valued for its excellent castability, high thermal conductivity, vibration damping capacity, and cost efficiency, making it a preferred material for large-scale casting applications.
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The gray cast iron chemical composition plays a critical role in determining its mechanical and physical properties.
Typical gray / grey cast iron composition range:
The balance between carbon and silicon promotes graphite formation while reducing cementite, resulting in improved machinability and vibration absorption.
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The gray cast iron structure consists of two primary phases:
This structure is responsible for gray cast iron’s excellent damping properties, wear resistance, and thermal stability.
Key gray cast iron properties include:
These characteristics make gray cast iron ideal for static and non-load-bearing components.
Gray cast iron alloys can be categorized into several types depending on composition and structure:
Custom alloying is available based on application-specific requirements.
The application of gray cast iron spans a wide range of industries due to its mechanical stability and cost efficiency.
Common uses of gray cast iron include:
More than half of gray cast iron production is used in casting applications requiring vibration control and dimensional stability.
The gray cast iron manufacturing process involves:
Graphite morphology is controlled through cooling rate and chemical adjustments.
Product specifications:
Custom chemical analysis available upon request.
The gray cast iron price is influenced by multiple variables, including:
Due to market volatility, gray cast iron price per kg changes frequently. For the latest gray cast iron price today, please contact our sales team directly for an accurate quotation based on your required specification and order volume.
We supply gray cast iron for sale in bulk quantities for industrial and foundry applications. All products undergo strict quality control to ensure compliance with metallurgical standards.
As a reliable gray cast iron supplier, we offer:
Custom grades and analyses can be produced based on customer requirements.
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