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Specific weight of iron, properties, applications and values table

Iron is an element of the eighth group of the secondary subgroup of the corresponding table of elements and is one of the most common metals in the Earth’s crust, ranking second after aluminum. Iron in its simple form is a malleable white metal with a silvery shade. This type of material has a high ability to undergo chemical reactions, especially corrosion in air at high humidity and temperature. In pure oxygen, iron in its simple form burns. In a finely dispersed state, it can ignite spontaneously in air.

Usually, the name iron refers to its various alloys with an impurity content of up to 0.8 percent. These impurities make it possible to improve the ductility and softness of the pure metal. Carbon alloys are used: steels with a carbon content of up to 2.14 percent and cast irons with a carbon content of more than 2.14 percent, as well as alloys with the addition of alloying metals. In its pure form, iron is very rarely found in nature, more often in iron-type nickel meteorites. In terms of abundance in the world, it ranks fourth.

Table of the specific weight of iron

Since iron is a complex material, it is not possible to calculate the weight of iron, namely its specific weight, independently in field conditions. These calculations are carried out in specialized chemical laboratories. However, the average specific weight of iron is known and is 7.874 g/cm³.

To simplify calculations, below is a table with the values of the specific weight of iron, as well as its weight depending on the units of calculation.

Table of iron weight

Specific weight and weight of 1 m³ of iron depending on the units of measurement
Material Specific weight (g/cm³) Weight of 1 m³ (kg)
Iron 7.874 7874

Properties of iron

Iron is a typical white metal with a silvery and grayish shade. It has good ductility, pronounced magnetic properties, and also changes its properties well under the influence of impurities. Magnetism is characteristic of iron.

This type of element is divided into four modifications according to its crystal structure:

  • Alpha iron. At room temperature, iron has a body-centered cubic lattice and is ferromagnetic below the Curie point of about 770 °C. This structure remains stable up to about 912 °C.
  • Beta iron. This is a historical name for the nonmagnetic state of alpha iron above the Curie point; no separate new crystal lattice appears at this transition.
  • Gamma iron. From about 912 to 1394 °C, iron has a face-centered cubic lattice.
  • Delta iron. Above about 1394 °C and up to melting, iron again has a body-centered cubic lattice.

Approximately about 95 percent of all metallurgical production is accounted for by iron, which makes it one of the most in-demand metals in the world. The main areas include:

  • Using iron as the main component of cast irons and steel
  • Using it in alloys based on other components
  • Using iron oxide to manufacture long-term computer memory devices
  • Iron powder is used as toner in black-and-white laser printers
  • Application in the production of electric motors and transformers
  • Use in the etching process for printed circuit boards

Frequently Asked Questions

How much does 1 m³ of iron weigh?

At a density of about 7.874 g/cm³, one cubic meter of pure iron weighs roughly 7,874 kg. Steel and cast iron may differ because of carbon and alloying elements.

How is iron different from steel and cast iron?

Iron is a chemical element, while steel and cast iron are alloys of iron with carbon and other elements. Their properties and density therefore do not fully match.

Why does iron rust?

In humid air, iron reacts with oxygen and water to form iron oxides and hydroxides. Protective coatings, alloying and painting reduce corrosion.