Steel
Steel is a strong and versatile metal alloy primarily made from iron and carbon, usually with less than 2% carbon, giving it superior strength and durability compared to pure iron. Other elements like chromium, nickel, and manganese are added to create different grades with specific properties, such as stainless steel (corrosion-resistant) or tool steel (hardened). It’s the world’s most essential engineering material, used in construction, vehicles, appliances, and tools due to its low cost, abundance, and customizable properties.
Key Characteristics
- Composition: Iron (main element) + Carbon (0.04% to 2.0%) + other alloying elements.
- Properties: Strong, durable, formable, and highly recyclable.
- Variations: Different elements create steels for specific uses, from flexible to extremely hard.
Common Alloying Elements & Effects
- Chromium: Increases corrosion resistance (stainless steel).
- Nickel: Improves toughness and corrosion resistance.
- Manganese: Enhances strength, hardness, and wear resistance.
- Molybdenum: Boosts strength and high-temperature resistance.
Common Uses
- Infrastructure: Beams, bridges, railway tracks.
- Transportation: Cars, trains, ships.
- Household: Appliances, cutlery, tools, furniture.
- Construction: Reinforcing bars (rebar) for concrete.
Check out the Wikipedia for more.