Steel and Its Types Quiz

Carbon steel has a higher percentage of carbon, while alloy steel includes additional elements to enhance certain properties.

Carbon steel is used in the manufacture of machine elements and pipes.

Adding manganese increases the impact resistance of alloy steel.

<p>Low carbon steel contains less than 0.11 wt% carbon.</p> Signup and view all the answers

<p>Tungsten enhances the resistance of the steel to high temperatures.</p> Signup and view all the answers

<p>Steel's strength, durability, and versatility make it essential for skyscrapers, buildings, and bridges.</p> Signup and view all the answers

<p>The three types are low carbon steel, medium carbon steel, and high carbon steel.</p> Signup and view all the answers

<p>The carbon content in steel is usually less than 1.0 wt%.</p> Signup and view all the answers

<p>Martensitic steel can be heat treated, while ferritic and austenitic steels cannot.</p> Signup and view all the answers

<p>Strengthening is carried out by cold working.</p> Signup and view all the answers

<p>Martensitic and ferritic stainless steels have a body-centered cubic (BCC) structure, making them magnetic, while austenitic steels have a face-centered cubic (FCC) structure, which is non-magnetic.</p> Signup and view all the answers

<p>Chromium acts as a ferrite stabilizer and influences the phase regions in Fe-Cr alloys.</p> Signup and view all the answers

<p>The stainless steel remains in a ferrite structure with no transformation to austenite.</p> Signup and view all the answers

<p>Higher carbon content can introduce an austenite phase region at elevated temperatures.</p> Signup and view all the answers

<p>Higher chromium content promotes the formation of a protective oxide film on the surface.</p> Signup and view all the answers

<p>It leads to a reduction in protective oxide film layers, increasing susceptibility to corrosion.</p> Signup and view all the answers

<p>Body-Centered Cubic (BCC)</p> Signup and view all the answers

<p>912 °C (1674 °F)</p> Signup and view all the answers

<p>2.11 wt%</p> Signup and view all the answers

<p>It is hard and brittle.</p> Signup and view all the answers

<p>It indicates the formation of iron beta (γ) phase.</p> Signup and view all the answers

<p>It transforms into iron ferrite (δ).</p> Signup and view all the answers

<p>Above 0.022 wt% at temperatures below 727 °C.</p> Signup and view all the answers

<p>Ferrite is magnetic; austenite is non-magnetic.</p> Signup and view all the answers

<p>The term 'ferrous' refers to materials that contain iron.</p> Signup and view all the answers

<p>Pure iron has poor properties, making it less useful than its alloys.</p> Signup and view all the answers

<p>The two primary types of metals are ferrous metals and non-ferrous metals.</p> Signup and view all the answers

<p>Iron is the second most abundant metal on Earth, making it cheap to extract.</p> Signup and view all the answers

<p>Adding carbon to iron forms steel, which enhances strength and durability.</p> Signup and view all the answers

<p>Iron's hardness and high tensile strength make it suitable for engineering applications.</p> Signup and view all the answers

<p>Iron is heavy and has a high density.</p> Signup and view all the answers

<p>Iron is magnetic due to its atomic structure, which aligns with external magnetic fields.</p> Signup and view all the answers

<p>Keeping carbon content low prevents the formation of chromium carbide, which can inhibit the formation of a protective oxide film.</p> Signup and view all the answers

<p>Nickel stabilizes the FCC structure and increases carbon solubility, reducing chromium carbide formation.</p> Signup and view all the answers

<p>At carbon content below $0.03 ext{C}$, the austenite phase can remain stable at room temperature.</p> Signup and view all the answers

<p>Ferritic, Martensitic, and Austenitic stainless steels.</p> Signup and view all the answers

<p>High Ni content alloys tend to have greater stability and corrosion resistance compared to low Ni content alloys.</p> Signup and view all the answers

<p>Precipitation hardening strengthens stainless steel through solutionizing, quenching, and aging processes.</p> Signup and view all the answers

<p>The FCC structure provides stability to the alloy and allows for a higher solubility of carbon.</p> Signup and view all the answers

<p>Higher chromium content enhances the formation of a protective oxide film, improving corrosion resistance.</p> Signup and view all the answers