---
title: Iron | one to ONE Holdings
description: Iron is extracted from oxides (ore) to make pig iron and steel alloy. Corrosion is iron reverting to rust.
image: https://www.o2oh.com/hubfs/o2Oh_18mm-1.jpg
---

Perfecting imperfections with one to ONE

# Glossary

### GLOSSARYTerms A-Z

- [Glossary](https://www.o2oh.com/glossary)
- [ALL](https://www.o2oh.com/glossary?val=all)
- [A～G](https://www.o2oh.com/glossary?val=a_g)
- [H～N](https://www.o2oh.com/glossary?val=h_n)
- [O～U](https://www.o2oh.com/glossary?val=o_u)
- [V～Z](https://www.o2oh.com/glossary?val=v_z)
- [Numbers ・ Symbols](https://www.o2oh.com/glossary?val=0_9)

# Iron

Iron (Fe) is fundamentally the backbone of our industrialized world. Iron rarely exists in its pure, metallic form in nature. Instead, it is predominantly found as [**iron oxides**](https://www.o2oh.com/glossary/iron-oxide), such as hematite (Fe2O3) and magnetite (Fe3O4), which are the primary constituents of [iron ore](https://www.o2oh.com/glossary/iron-ore).

These oxides are the essential raw material for metallurgy. The process of reducing these oxides in a [blast furnace](https://www.o2oh.com/glossary/blast-furnace), typically using coke as a reductant, converts the iron oxide back into metallic iron, initially yielding [**pig iron**](https://www.o2oh.com/glossary/pig-iron). Conversely, the widespread corrosion of infrastructure is the reverse process: metallic iron reacts with oxygen and water to revert to iron oxides (rust).

While iron is a base element, [steel](https://www.o2oh.com/glossary/steel) is an alloy of iron and carbon that increases strength.

See also: [Steelmaking](https://www.o2oh.com/glossary/steelmaking)

Diagram of DSTI’s 'Daiwa Z Process,' a unique in-line galvanizing method.

### RELATED WORDS

---

- [International Data Spaces (IDS)](https://www.o2oh.com/glossary/international-data-spaces-ids)
- [Interoperability](https://www.o2oh.com/glossary/interoperability)
- [Institutional knowledge](https://www.o2oh.com/glossary/institutional-knowledge)
- [IFRS S2](https://www.o2oh.com/glossary/ifrs-s2)
- [IFRS S1](https://www.o2oh.com/glossary/ifrs-s1)
- [IFRS](https://www.o2oh.com/glossary/ifrs)
- [TCFD](https://www.o2oh.com/glossary/tcfd)
- [IT-OT convergence](https://www.o2oh.com/glossary/it-ot-convergence)
- [ISSB](https://www.o2oh.com/glossary/issb)
- [Integrated Reporting](https://www.o2oh.com/glossary/integrated-reporting)
- [Industrial Metabolism](https://www.o2oh.com/glossary/industrial-metabolism)

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