Many people active in the steel industry are certain of calculations of ductile and cast iron indices that are per kg. Global inflation is another factor that affects the price of all products, especially iron. First-world countries moved their steel mills to developing countries because of labor, lower costs, and lower wages. Therefore, steel prices are affected by inflation in these countries. In addition, countries' domestic politics can also affect prices. factors affecting iron prices The above materials are the main factors that affect the price of steel. But in addition, we can mention other factors, albeit to a lesser extent, which also has an influence on steel prices. Such as prices and costs of power plants and electricity production, and alternative resources such as coal and water, which are very important and widely used in steel production. There are many factors that affect the price of steel, such as iron ore, oil price, exchange rate, transport price, scrap price, etc. In this article, a brief description of each mentioned title is mentioned. 
In addition to the above items that play an important role in determining steel prices, there are other options that are considered secondary items, such as the price and cost of power plants and electricity generation, and alternative resources such as coal and water, which are very important in steel production. The term gray iron has been used to name the cast iron with a flake or layered graphite because of the gray color of the broken parts. Gray cast iron is one of the most important and widely used alloys. If you are not a metallurgist, you may not be familiar with the term gray cast iron, but you must know GG-20 or GG-25 cast iron, or at least you have heard their names. These two cast iron alloys are widely used in our country's industry, especially in the automotive industry, the manufacture of pipes, valves, and fittings, the manufacture of pumps, the manufacture of the main part of electric motors, and the manufacture of parts, equipment, and industrial machinery. In this way, a certain proportion of gray cast iron elements are deposited, and the rest is iron
- Carbon: 4-3.5%
- Sulfur: 0.06% or less
- Silicon: 0.5-1.5%
- Manganese: 0.8-0.2%
- Phosphorus: 0.1% or less
Ductile iron price index
As mentioned earlier, the price index of metal and steel products is different for every single product. Take ductile iron as an example, it has many rates and qualities. Take a look at some examples of cast iron: Types of cast iron Cast iron can be divided into gray cast iron, white cast iron, malleable cast iron or malleable cast iron and ductile iron according to the type of microstructure and fracture color. white cast iron White cast iron is a cast iron with a white or silver cross-section, indicating that it does not contain graphite. This white section is due to the presence of cementite phase or Fe3C which gives high strength, hardness and brittleness to cast iron. The structure of white cast iron is composed of cementite and austenite, and the hardness reaches 400 to 600 Vickers. White cast iron is mainly used for pump housings, bushings and grinding rods, crushers and brake shoes due to its wear resistance. 
Malleable or malleable iron Malleable cast iron is obtained by heat treating white cast iron. During heat treatment of white cast iron, the iron carbide (cementite) is destroyed and becomes free graphite. These graphite are flakes. Malleable cast iron is malleable and flexible, with good fracture toughness at low temperatures. Malleable iron is used for electrical connections, mining equipment and mechanical parts. Ductile iron Ductile iron is made by adding about 0.2% magnesium or cerium to gray cast iron to change sheet graphite to spherical graphite. This cast iron is also known as bull's eye cast iron. Ductile iron is primarily used due to its relatively malleable properties and is widely used in water and wastewater infrastructure. Its thermal cycling resistance also makes it a popular choice for cranks, gears, heavy-duty suspension, and brakes. This cast iron has a hardness of 150 to 300 Vickers and tensile strength of about 380 MPa. 
cast iron price per kg
Before we go to price of cast iron per kg we better know how the it is made. Cast iron is made from pig iron, the product of smelting iron ore in a blast furnace. For more information on how to make pig iron or cast iron, read the article What is Iron? Cast iron can be produced directly from molten pig iron or by remelting pig iron and usually contains large amounts of iron, steel, limestone, carbon (coke) and various steps to remove impurities. Cast iron is sometimes melted in a special type of blast furnace called a cupola. However, in modern applications, this melting mainly occurs in electric induction furnaces or electric arc furnaces. By removing unwanted elements such as phosphorus and sulfur, the carbon content of pig iron is also reduced, known as carbon combustion. Therefore, we have to replace carbon to produce cast iron. Depending on the application, the carbon and silicon content is adjusted to the desired level, from 2% to 3.5% and 1% to 3%, respectively. Optionally, other elements are added to the melt before the final shape is cast. 
Properties of cast iron The carbides of white cast iron allow cracks to pass easily, while the graphite flakes of gray cast iron can deflect passing cracks and destroy the material, creating countless new cracks. Ductile iron has spherical graphite that prevents further crack development. Except for malleable cast iron, all other cast irons are brittle. Cast iron has become a widely used engineering material due to its relatively low melting point, good fluidity, easy casting, excellent machinability, excellent deformation resistance, and wear resistance. Despite the above advantages, the tensile strength of cast iron is very low. In addition, cast iron is difficult to weld. These factors result in a limited efficiency of cast iron due to the positive properties mentioned above. 
ductile iron prices
the ductile could be the byproduct of cast iron and of course, the prices of these two products are different from each other though they don’t have many differences. In general, the advantages of cast iron are:
- Very good and easy casting ability
- very good wear resistance
- Good machinability (white cast iron cannot be machined)
- Low production costs and available
- good durability
- Deformation resistance
- The compressive strength is three to five times greater than steel
- Excellent anti-vibration performance
Among the disadvantages of cast iron, the following can be mentioned:
- easy to rust
- Poor tensile strength
- High strength-to-weight ratio
- high vulnerability
- Poor impact resistance
- Poor machinability compared to steel
- Poor welding ability
There are many differences between cast iron and The main difference between cast iron and steel is their chemical composition, especially the carbon content in them. Steel is an alloy of iron and carbon with a carbon content between 0.002% and 2.1%; cast iron is an alloy of iron and carbon with a carbon content of more than 2.5%. In general, cast iron is cheaper than steel. In addition, the melting point of cast iron is lower than that of steel, but the properties of compressive strength, hardness and wear resistance of cast iron are much higher than those of steel. Therefore, alloy steel is malleable and malleable, while cast iron is hard and brittle. Another difference between steel and cast iron has to do with the type of carbides in its structure. Carbides in steel structures are iron carbide or cementite (Fe3C), while carbides in cast iron can exist in two forms: iron carbide or cementite and graphite. 
ductile iron price chart
The price chart of steel products especially ductile iron and cast iron are here in our website. You can easily get the price of the product you need from our experts if you don’t feel like searching and our professional sales managers are ready to help you at any time. The standards of cast iron are as follows: The cast iron standard classifies graphite according to its form. The main standards for cast iron include DIN, ASTM, and EN. The standards for vane graphite and spherical graphite cast iron are as follows. Standard gray cast iron Gray cast iron with leaf graphite according to DIN 1691 is designated GGxx. In this standard, the letter GG is followed by the value of the minimum tensile strength in MPa, which must be multiplied by 10 to reach a real number. For example, GG20 represents gray cast iron with a minimum tensile strength of 200 MPa. 
In addition, gray cast iron is classified according to ASTM A48. Therefore, cast iron is shown as a 30 B quality. According to the previous situation, the number 30 represents the minimum tensile strength, which here corresponds to 30 Ksi. Standard ductile iron According to DIN 1693, ductile iron is designated GGGxx. Similar to the gray cast iron standard, the number after GGG indicates the minimum tensile strength. For example, the GGG40 standard applies to ductile iron with a minimum tensile strength of 400 MPa. The ASTM A536 standard is also related to ductile iron. According to the standard, only 3 numbers with a hyphen between them are used to indicate the type of cast iron and its properties. For example, 18-40-60 is the standard for ductile iron according to ASTM A536. These numbers represent a tensile strength of at least 60 Ksi, a yield stress of at least 40 Ksi, and an elongation of at least 18%. Cast iron classification according to EN 1560 The EU-related standard, abbreviated EN (European Norm), introduced and standardized cast iron in number 1560. 
cast iron price per pound
The price of cast iron and in general steel products are calculated per pound in the US and UK. To be honest Sterling Pound is a weight measurement only in the UK. To check the application of cast iron, we check it according to the existing classification. What is the use of gray cast iron? One of the main features of gray cast iron is its resistance to wear even without the use of lubricants. For example, gray cast iron is used for the upper cylinder walls of engine blocks. Other uses of gray cast iron include the manufacture of engine blocks and heads, manifolds, gas burners, transmissions and housings. Among the most important qualities of gray cast iron, the following can be mentioned:
- A48: Contains grades 25, 30 and 40 for general applications
- A126: Manufacture of various types of valves, flanges, pipes and fittings
- A278: Suitable for manufacturing pressure components in high temperature environments up to 350°C
- A319: Non-pressure elements for high temperature applications
- A436: Austenitic gray cast iron, suitable for heat, corrosion and wear resistance. They are also called nickel resists because they contain more nickel than other elements.
Application of white cast iron The cementite in this cast iron structure makes it a wear-resistant material. As such, it is used in the manufacture of mill liners, spreader nozzles, railway brake shoes, slurry pump housings, mill rollers and crushers. Application of ductile iron Ease of machining, fatigue strength, adequate yield stress and wear resistance are the outstanding properties of this type of cast iron. However, its most famous feature is its malleability. Ductile iron can be used to make steering belts, plow components, crankshafts, heavy-duty gears, car and truck suspension components, hydraulic components, and door hinges. Some of the main ductile iron grades and their uses include:
- A395: Ferritic ductile iron for high-temperature pressure elements
- A439: Austenitic ductile iron
- A571: Austenitic ductile iron for pressure parts and low operating temperatures down to -252°C (liquid hydrogen tanks)
The price and application of cast iron and ductile iron were briefly explained in the passage and if you have any further questions about the quality, quantity, iso and other specifications of the products feel free to contact me at any time. Our team of experts are available 24/7.