Metals and Alloys: Composition and Uses

What are the primary components of brass?

• Copper and zinc

• Copper and iron

• Zinc and lead

• Copper and aluminum

List two common uses of brass in everyday applications.

• Jewelry and decorative items

• Musical instruments and plumbing fittings

• Automotive parts and engines

• Electrical wiring and components

What is the main difference between brass and german silver?

• Brass is made of copper and zinc; German silver contains copper, nickel, and zinc.

• Brass contains copper, nickel, and zinc; German silver is made of copper and tin.

• Brass is an alloy of copper and iron; German silver is made of copper and lead.

• Brass is made of copper and aluminum; German silver contains copper and zinc.

Identify the primary alloying elements in german silver.

• Tin, silver, and magnesium

• Titanium, chromium, and cobalt

• Copper, nickel, and zinc

• Aluminum, iron, and lead

What are the typical applications of duralumin?

• Medical devices

• Construction materials

• Household appliances

• Aircraft structures, automotive components, engineering applications.

Explain the composition of solder and its uses in electronics.

• Solder is made of copper and aluminum for better conductivity.

• Solder is a type of adhesive used for insulation in electronics.

• Solder is primarily composed of silver and gold for high-end applications.

• Solder is a mixture of tin and lead (or lead-free alternatives) used in electronics for making conductive joints.

What is the significance of stainless steel in kitchenware?

• Stainless steel cannot withstand high temperatures.

• Stainless steel is durable, resistant to rust and corrosion, non-reactive, easy to clean, and withstands high temperatures.

• Stainless steel is prone to rust and corrosion.

• Stainless steel is difficult to clean and maintain.

Describe the properties that make nickel steel suitable for construction.

• Nickel steel is lightweight and brittle, making it unsuitable for construction.

• Nickel steel is strong, tough, ductile, corrosion-resistant, and maintains properties at various temperatures, making it suitable for construction.

• Nickel steel is only used for decorative purposes and has no structural applications.

• Nickel steel is prone to rust and does not perform well in extreme temperatures.

How does the corrosion resistance of stainless steel compare to that of brass?

• Stainless steel is more corrosion resistant than brass.

• Brass is more corrosion resistant than stainless steel.

• Brass is completely corrosion resistant while stainless steel is not.

• Stainless steel and brass have the same corrosion resistance.

What are the advantages of using duralumin in aerospace applications?

• Poor resistance to heat

• The advantages of using duralumin in aerospace applications include its lightweight nature, high strength-to-weight ratio, excellent corrosion resistance, and good machinability.

• High density and low strength

• Difficult to machine and shape