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   Sponge iron

   Sponge iron, also called direct reduced iron, is the product created when iron ore is reduced to metallic iron, usually with some kind of carbon (charcoal, etc), at temperatures below the melting point of iron. This results in a spongy mass, sometimes called a bloom, consisting of a mix of incandescent wrought iron and slag.
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   List of elements by melting point

   The melting points of the following elements are not yet known: ... The four key temperatures in these ranges are respectively, the melting point of iridium, the boiling point of beryllium, the melting point of niobium, and the boiling point of aluminium.
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   Wrought iron

   Wrought iron is an iron alloy with a very low carbon content, in comparison to steel, and has fibrous inclusions, known as slag. ... The bloomery was charged with charcoal and iron ore and then lit. Air was blown in through a tuyere to heat the bloomery to a temperature somewhat below the melting point of iron.
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   Cast iron

   Cast iron usually refers to grey iron, but also identifies a large group of ferrous alloys, which solidify with a eutectic. ... Since cast iron has nearly this composition, its melting temperature of 1,150 to 1,200 °C (2,102 to 2,192 °F) is about 300 °C (572 °F) lower than the melting point of pure iron.
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   Iron

   The RDA for iron varies considerably based on age, gender, and source of dietary iron (heme-based iron has higher bioavailability). ... | Melting point | 1811 K, 1538 °C, 2800 °F |
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   Eutectic point

   A eutectic or eutectic mixture is a mixture at such proportions that the melting point is a local temperature minimum, which means that all the constituents crystallize simultaneously at this temperature from molten liquid solution. ... ↑ Iron-Iron Carbide Phase Diagram Example
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   Iron Age

   In archaeology, the Iron Age is the prehistoric period in any area during which cutting tools and weapons were mainly made of iron or steel. ... Bronze was previously used to make tools because its melting point is lower than that of iron.
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   Melting points of the elements (data page)

   | 26 Fe iron | ... List of elements by melting point
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   Iron(III) chloride

   Iron(III) chloride, also called ferric chloride, is an industrial scale commodity chemical compound, with the formula FeCl3. ... | Melting point | 306 °C (anhydrous) 37 °C (hexahydrate) |
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    Red-short

    Iron or steel, when heated to above 900 °F (480 °C), glows with a red color. ... Manganese sulfide inclusions have a higher melting point and do not concentrate at the grain boundaries.

Explore the following pages on Powerset:

• Sponge iron,
• List of elements by melting point,
• Wrought iron,
• Cast iron,
• Iron,
• Eutectic point,
• Iron Age,
• Melting points of the elements (data page),
• Iron(III) chloride,
• Red-short

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