Is steel divided into raw and wrought? What s the deal with cast steel?

Cast steel is an iron-carbon alloy with a carbon content. In order to ensure its toughness and plasticity, the carbon content generally does not exceed the main elements of steel, in addition to iron and carbon, there are silicon, manganese, sulfur, phosphorus, etc. There are various ways to classify steel, and the main methods are as follows:

1. Classification by quality.

1) Ordinary steel (2) High-quality steel (3) High-grade high-quality steel.

2., classified by chemical composition.

1) Carbon steel: aMild steel; b.medium carbon steel; c.High-carbon steel.

2) Alloy steel: aLow alloy steel; b.medium alloy steel; c.High-alloy steel.

3. Classification according to forming method.

2) Forged steel; (2) Cast steel; (3) hot-rolled steel; (4) Cold drawing.

4. Classification according to use.

1) Steel for construction and engineering: aOrdinary carbon structural steel; b.low-alloy structural steels; c.Reinforced steel.

2) Structural steel.

a.Steel for machinery manufacturing: (a) quenched and tempered structural steel; (b) Case-hardened structural steel:

Including carburized steel, ammonia steel, surface quenching steel; (c) Easy-cut structural steel; (d) Steel for cold plastic forming: including steel for cold stamping and steel for cold heading; b.Spring steel; c.

Bearing steel 3) Tool steel: acarbon tool steel; b.alloy tool steel; c.High-speed tool steel.

4) Special performance steel: astainless acid-resistant steel; b.Heat-resistant steel: including oxidation-resistant steel, hot-strength steel, and gas valve steel; c.electrically heated alloy steel; d.wear-resistant steel; e.steel for low temperatures; f.Steel for electricians.

5) Professional steel - such as bridge steel, ship steel, boiler steel, pressure vessel steel, agricultural machinery steel, etc.

5. Comprehensive classification.

1) Ordinary steel.

a.Carbon Structural Steel: (a) Q195; (b) q215(a、b)；(c) q235(a、b、c)；(d) q255(a、b)；(e) q275。

b.low-alloy structural steels;

c.Ordinary structural steel for specific purposes.

2) High-quality steel (including high-grade high-quality steel).

a.Structural steel: (a) high-quality carbon structural steel; (b) alloy structural steel; (c) spring steel; (d) easy-cut steel; (e) bearing steel; (f) High-quality structural steel for specific purposes.

b.Tool steels: (a) carbon tool steels; (b) alloy tool steels; (c) High-speed tool steel.

c.Special performance steel: (a) stainless acid resistant steel; (b) heat-resistant steel; (c) Electrically heated alloy steel; (d) electrical steel; (e) High manganese wear-resistant steel.

6. Classification according to smelting method.

1) Divided by type of furnace.

a.Open-hearth steel: (a) acid open-hearth steel; (b) Alkaline open-hearth steel.

b.Converter steel: (a) acid converter steel; (b) Alkaline converter steel. or (a) bottom-blown converter steel; (b) Side-blown converter steel; (c) Top blowing converter steel.

c.Electric furnace steel: (a) electric arc furnace steel; (b) electroslag furnace steel; (c) Induction furnace steel; (d) Vacuum self-consumable furnace steel; (e) Electron beam furnace steel.

2) According to the degree of deoxidation and pouring system.

boiling steel; b.semi-sedative steel; c.Calming steel; d.Special calming steel.

There is no distinction between raw and cooked steel. Only iron has it. Cast steel is a type of steel used to cast castings, a kind of casting alloy. Cast steel is divided into three categories: cast carbon steel, cast low alloy steel and cast special steel.

Yes, raw steel is not processed and heat-treated, and cast steel is a casting method used in the production of parts.

I guess it's cast iron. Cast iron has high hardness and poor toughness.

Question: Are the gears of the car transmission pig iron or wrought iron?

The gears and transmission shafts inside the gearbox are generally made of steel, and powder metallurgy is also used (low-speed part).

Iron is divided into pig iron and wrought iron, which means that the carbon content of wrought iron decreases after various heating, which increases the hardness. The difference between pig iron and wrought iron is how much carbon it contains. Pig iron has a higher carbon content and wrought iron has a lower carbon content. The carbon content of steel is between pig iron and wrought iron.

Steel has toughness and is mainly used for tensile force, while iron mainly contains more carbon than steel, and the toughness is not good, so it is generally used for pressure. Tempered glass refers to the addition of other trace elements to the glass during processing, so that it has the same properties as steel, hence the name. Tempered glass has the characteristics of high impact strength (4 5 times higher than ordinary flat glass), high bending strength (5 times higher than ordinary flat glass), good thermal stability, and smooth, transparent and cut.

In the event of super impact damage, the fragments are scattered and fine particles, without sharp edges and corners, so it is also called safety glass.

It has a hardness close to that of steel and has many uses. Its hardness makes it versatile and can be found everywhere.

The term for steel materials is called iron-carbon alloy, and the carbon dissolved in the iron has a great impact on its properties. Iron-carbon alloys with less carbon content are called steel, and wrought iron is low-carbon steel. Iron-carbon alloys with greater carbon content are called pig iron.

Generally, the carbon content of 2% is called pig iron, the carbon content is called steel, and the carbon content of wrought iron is extremely low.

Pig iron and steel are mixtures with different mechanical strength and different castability, but the main difference is the difference in carbon content. The steel system is re-smelted from pig iron, which has high mechanical strength and toughness, and also has special properties such as heat resistance, corrosion resistance, and wear resistance.

Generally, the carbon content is less than wrought iron or pure iron, the content is called steel, and the content is more than 2% pig iron. Wrought iron is soft, good plasticity, easy to deform, low strength and hardness, and is not widely used; Pig iron contains a lot of carbon, is hard and brittle, and has little plasticity.

Iron is extremely abundant in nature, accounting for 5% of the earth's crust elements, ranking fourth among the earth's materials. Iron is very reactive and easily combines with other substances. It is customary to say that steel is a general term for steel and iron.

There is a difference between steel and iron, the so-called steel, mainly composed of two elements, namely iron and carbon, generally carbon and element iron form a compound, called iron-carbon alloy. The amount of carbon content has a great impact on the properties of steel, and when the carbon content increases to a certain extent, it will cause qualitative changes. A substance composed of iron atoms is called pure iron, and pure iron has few impurities.

The amount of carbon content is the main criterion for distinguishing steel. The carbon content of pig iron is greater than; The carbon content of steel is less. Pig iron has a high carbon content, is hard and brittle, and has little plasticity.

Steel not only has good plasticity, but also steel products have high strength, good toughness, high temperature resistance, corrosion resistance, easy processing, impact resistance, easy refining and other excellent physical and chemical application properties, so they are widely used.

Cast iron is made of iron ore by crushing, grinding into powder, put into an iron-making furnace by high temperature calcination into a liquid state (commonly known as molten iron), and then poured into a special mold to cool into iron ingots, also called billets or pig iron, the main components of cast iron are: an alloy composed of iron, carbon and silicon;

Steel is made of billets, also called cast iron or pig iron, after being calcined at high temperature, and then forged with heavy machinery to become steel (the so-called hundred refining into steel is this meaning), the main component of steel is still an alloy composed of iron, carbon and silicon, but according to the use of steel in different fields, the carbon and silicon content in the alloy body is different, and the steel precipitates carbon and silicon in the process of forging to reduce its content to meet the needs of different fields. For reference only.

International Foundry Network.

Main differences: The carbon content is different.

Pig iron is brittle due to its high carbon content. The carbon content is more than 2%.

Steel has a low carbon content, so it has good toughness, and the carbon content is below.

Steel, according to the different carbon content, is divided into low carbon steel (carbon content; Medium carbon steel is greater than, less than; High-carbon steel with a carbon content greater than.

Cast iron is made of iron ore by crushing, grinding into powder, put into an iron-making furnace by high temperature calcination into a liquid state (commonly known as molten iron), and then poured into a special mold to cool into iron ingots, also called billets or pig iron, the main components of cast iron are: an alloy composed of iron, carbon and silicon;

Steel is made of billets, also called cast iron or pig iron, after being calcined at high temperature, and then forged with heavy machinery to become steel (the so-called hundred refining into steel is this meaning), the main component of steel is still an alloy composed of iron, carbon and silicon, but according to the use of steel in different fields, the carbon and silicon content in the alloy body is different, and the steel precipitates carbon and silicon in the process of forging to reduce its content to meet the needs of different fields. For reference only.

International Foundry Network.

Pig iron actually refers to white cast iron, which is more different from steel, and here I will say three points:

1.In terms of chemical composition, the carbon content of steel is less than; Pig iron is greater than 2In terms of performance, pig iron is brittle, and steel is not as brittle as pig iron.

3.Structurally, there is a leinite structure in pig iron and no leinite in steel.

Pig iron actually refers to white cast iron, and the differences between it and steel are:

1.In terms of chemical composition, the carbon content of steel is less than; Pig iron is greater than 2In terms of performance, pig iron is brittle, and steel is not as brittle as pig iron.

3.Structurally, there is a leinite structure in pig iron and no leinite in steel.

Pig iron: pig iron is an iron-carbon alloy with a carbon content greater than 2%, and the carbon content of industrial pig iron is generally in, and contains C, SI, MN, S, P and other elements, which is a product smelted by blast furnace with iron ore. According to the different forms of carbon in pig iron, it can be divided into steelmaking pig iron, cast pig iron and ductile iron.

Steel: Steel is a general term for an iron-carbon alloy with a carbon content between the mass percentage of to. The chemical composition of steel can vary greatly, and steel that contains only carbon elements is called carbon steel (carbon steel) or ordinary steel; In actual production, steel often contains different alloying elements depending on the application, such as:

Manganese, nickel, vanadium, and many more. The application and research of steel has a long history, but until the invention of the Bayesr steelmaking method in the 19th century, the production of steel was a costly and inefficient work. Today, steel is one of the most used materials in the world due to its inexpensive, reliable properties, and is an indispensable ingredient in the construction, manufacturing and daily lives of people.

It can be said that steel is the material basis of modern society.

The difference between steel and iron is that the carbon content is different. Iron can be converted into steel by refining.

1, Steel is a general term for ferroalloys, and the carbon mass percentage is between and . The chemical composition of steel can vary greatly. Steel that contains only carbon is called carbon steel (carbon steel) or regular steel.

In practice, steel often contains different alloying elements, such as manganese, depending on the application. nickel, vanadium, etc.;

Low carbon steel: the carbon content is generally less than the mass fraction);

Medium carbon steel: carbon content is generally mass fraction);

High-carbon steels: the carbon content is usually higher than the mass fraction).

2. Iron is a chemical element with the chemical symbol Fe and its atomic number 26, which is the most commonly used metal. It is a transition metal. It is the second highest metallic element in the earth's crust.