Understanding the value of cast iron per kilogram is essential for manufacturers, recyclers, and buyers in the metal industry. Cast iron prices can fluctuate based on various factors including the material grade, market demand, and regional influences. This article delves into the different elements that affect the pricing of cast iron, offering insights to help you make informed decisions.

Key Takeaways

  • Cast iron prices vary depending on material grades and standards, such as ASTM and DIN.
  • The unit weight of casting significantly impacts the cost, with lighter castings generally being more expensive per kilogram.
  • Market demand and supply play a crucial role in determining the price of cast iron.
  • Regional variations, including local regulations and market trends, can influence cast iron prices.
  • Additional costs such as machining, painting, packing, and delivery are not included in the base price of cast iron.

Factors Influencing Cast Iron Prices

Material Grades and Standards

The price of cast iron is significantly influenced by the material grades and standards it adheres to. For instance, grey cast iron and ductile iron have different pricing structures based on their respective ASTM, DIN, and EN standards. Material grades requiring low tensile strength are generally cheaper compared to those requiring high tensile strength.

Unit Weight of Casting

The unit weight of the casting also plays a crucial role in determining its price. Castings weighing between 2 to 5 lb (1 to 2 kg) are priced differently compared to those weighing 50 to 100 lb (20 to 50 kg). It is difficult to estimate the price of casting with unit weight less than 1.0kg.

Unit Weight of Casting Price (USD/KG)
1 – 2 kg 1.41
2 – 20 kg 1.30
20 – 50 kg 1.30
50 – 1000 kg 1.41

Market Demand and Supply

Market demand and supply dynamics are another critical factor. When the demand for cast iron is high and supply is limited, prices tend to rise. Conversely, an oversupply can lead to lower prices. To summarize, pig iron prices are affected by a variety of factors, including supply and demand, raw material costs, policy factors, and exchange rate factors.

Understanding these factors can help buyers and sellers make more informed decisions in the cast iron market.

Comparison of Grey Cast Iron and Ductile Iron Prices

Price Differences by Weight

When comparing the prices of grey cast iron and ductile iron, it’s essential to consider the weight of the casting. For instance, grey cast iron prices range from 1.30 to 1.41 USD/KG depending on the weight category. On the other hand, ductile iron prices range from 1.39 to 1.50 USD/KG. The price differences are influenced by the material grades and the tensile strength requirements.

Weight Category (KG) Grey Cast Iron (USD/KG) Ductile Iron (USD/KG)
1 – 2 1.41 1.50
2 – 20 1.30 1.39
20 – 50 1.30 1.39
50 – 1000 1.41 1.50

Applications and Uses

Grey cast iron is commonly used in applications where low tensile strength is sufficient, such as in meter module risers and various pipe fittings. Ductile iron, however, is preferred for applications requiring higher tensile strength, such as in automotive components and heavy machinery.

Tensile Strength Requirements

The tensile strength requirements significantly impact the pricing of cast iron. Grey cast iron typically has lower tensile strength, making it less expensive. In contrast, ductile iron, which requires higher tensile strength, is generally more costly. This difference is crucial for industries that need materials with specific mechanical properties.

Understanding the differences in pricing and applications between grey cast iron and ductile iron can help buyers make informed decisions based on their specific needs.

Regional Variations in Cast Iron Pricing

Price Trends in China

China is a significant player in the cast iron market, and its pricing trends often influence global rates. The geographical differences in cast iron prices are evident due to local considerations such as labor costs, environmental laws, and infrastructure development. For instance, the price for grey cast iron in China ranges from $1.30 to $1.41 per kg, depending on the unit weight and material grade.

Impact of Local Regulations

Local regulations can significantly impact cast iron pricing. Environmental laws, labor regulations, and import/export duties are some of the factors that can cause price fluctuations. Regions with stringent environmental laws may see higher prices due to the additional costs of compliance.

Global Market Influence

The global market also plays a crucial role in determining cast iron prices. Factors such as international trade policies, currency exchange rates, and global demand and supply dynamics can lead to price variations. For example, a surge in global demand can drive up prices, while an oversupply can lead to a decrease.

Understanding regional variations in cast iron pricing is essential for making informed purchasing decisions and negotiating better deals.

Additional Costs in Cast Iron Pricing

Machining and Painting

When considering the overall cost of cast iron, it’s important to account for additional expenses such as machining and painting. These processes can significantly increase the final price. Machining involves precise cutting and shaping, which requires specialized equipment and skilled labor. Painting, on the other hand, adds a protective layer to the cast iron, enhancing its durability and appearance.

Packing and Delivery

Packing and delivery are crucial components of the total cost. Proper packing ensures that the cast iron parts are protected during transit, reducing the risk of damage. Delivery costs can vary based on the distance and the weight of the shipment. It’s essential to factor in these costs to get a comprehensive understanding of the pricing.

Inspection and Certification

Inspection and certification are often required to meet industry standards and customer specifications. These processes involve thorough checks to ensure the quality and compliance of the cast iron products. While they add to the overall cost, they are indispensable for maintaining high standards and customer satisfaction.

For more accurate casting prices, please use our "Cast Iron Price Calculator". This tool helps in estimating the costs by considering various factors, including additional expenses like machining, painting, packing, and delivery.

Using a Cast Iron Price Calculator

How to Use the Calculator

A cast iron price calculator can be an invaluable tool for estimating costs. To use it, input the casting material requirement and the unit weight of casting. For more accurate casting prices, ensure you include all relevant details such as machining, painting, packing, and delivery costs.

Benefits of Accurate Pricing

Using a price calculator helps in obtaining precise cost estimates, which is crucial for budgeting and financial planning. It also aids in comparing prices across different suppliers and regions, ensuring you get the best deal.

Limitations of Online Calculators

While online calculators are convenient, they may not account for all variables such as local regulations and market demand. Therefore, it’s advisable to use them as a preliminary tool and consult with suppliers for a comprehensive quote.

For more accurate casting prices, please use our "Cast Iron Price Calculator".

Historical Price Trends for Cast Iron

Yearly Price Fluctuations

The price of cast iron has seen significant fluctuations over the years. For instance, iron ore decreased 28.68 USD/MT or 21.03% since the beginning of 2024. These changes are often influenced by various economic factors and market demands.

Economic Factors

Several economic factors contribute to the price trends of cast iron. These include:

  • Global supply and demand
  • Production costs
  • Trade policies

Impact of Technological Advancements

Technological advancements have also played a crucial role in shaping the price trends of cast iron. Improved production techniques and innovative materials have led to more efficient manufacturing processes, thereby affecting the overall cost.

Understanding the historical price trends of cast iron can provide valuable insights for future market predictions and investment decisions.

Scrap Cast Iron Prices

Factors Affecting Scrap Prices

Scrap cast iron prices are influenced by several factors, including the quality of the material and its current market demand. Cast Iron is appreciated for being very brittle, making it easier to sort into desirable quantities as scrap. Additionally, its high fluidity and castability make it an attractive material for engineers.

Comparison with New Cast Iron

When comparing scrap cast iron with new cast iron, the price difference is significant. For instance, the price of scrap heavy steel and cast iron is approximately £0.180 per kg, whereas new cast iron prices can be considerably higher. This makes scrap cast iron a cost-effective alternative for many applications.

Recycling Processes

The recycling process for cast iron involves several steps:

  1. Collection and sorting of scrap materials.
  2. Melting the scrap in a furnace.
  3. Removing impurities and casting the molten iron into new shapes.

Recycling cast iron not only conserves natural resources but also reduces energy consumption and greenhouse gas emissions.

Material Price (£/KG)
Heavy Iron £190.00
Scrap Heavy Steel and Cast Iron £0.180

Looking to get the best prices for your scrap cast iron? Visit our website today to learn more about our free collection services and how we can help you turn your unwanted metal into cash. Don’t miss out on the opportunity to recycle responsibly and profitably.


In conclusion, the value of cast iron per kilogram can vary significantly based on several factors including the type of cast iron, its weight, and specific material requirements. Prices are generally updated regularly by foundries such as Dandong Foundry in China, which provides a useful reference for both grey and ductile cast iron. However, these prices are typically EXW and do not include additional costs such as machining, painting, packing, and delivery. For more precise estimates, tools like the ‘Cast Iron Price Calculator’ can be invaluable. Understanding these variables can help buyers make more informed decisions when evaluating the cost of cast iron.

Frequently Asked Questions

What factors influence the price of cast iron?

The price of cast iron is influenced by factors such as material grades and standards, unit weight of casting, and market demand and supply.

How do grey cast iron and ductile iron prices compare?

Grey cast iron and ductile iron prices differ based on weight, applications, uses, and tensile strength requirements. Generally, ductile iron is more expensive due to its higher tensile strength.

Are there regional variations in cast iron pricing?

Yes, cast iron prices vary by region due to factors like local regulations, market demand, and global market influences. For example, prices in China may differ from those in Europe or North America.

What additional costs should be considered in cast iron pricing?

Additional costs in cast iron pricing include machining, painting, packing, delivery, inspection, and certification. These costs can significantly affect the final price.

How can I use a cast iron price calculator?

A cast iron price calculator helps you estimate the cost of cast iron by inputting factors such as material type, weight, and additional processing requirements. It provides a more accurate pricing estimate.

What are the historical price trends for cast iron?

Historical price trends for cast iron show yearly fluctuations influenced by economic factors and technological advancements. Prices can vary significantly over time due to changes in supply and demand.