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Questions and Answers
Which brass alloy is specifically mentioned as being suitable for hot work?
Which brass alloy is specifically mentioned as being suitable for hot work?
Which of the following alloys is known for its resistance to corrosion by seawater?
Which of the following alloys is known for its resistance to corrosion by seawater?
Which of the following metals is NOT a component of Wood's Metal?
Which of the following metals is NOT a component of Wood's Metal?
Which alloy is primarily used for decorative articles and utensils due to its silver-like appearance?
Which alloy is primarily used for decorative articles and utensils due to its silver-like appearance?
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Which alloy is known for its golden color and is frequently used in casting operations?
Which alloy is known for its golden color and is frequently used in casting operations?
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Which bronze alloy is particularly known for its resistance to the force of explosion?
Which bronze alloy is particularly known for its resistance to the force of explosion?
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Which alloy is primarily used for bearings and springs due to its low coefficient of friction?
Which alloy is primarily used for bearings and springs due to its low coefficient of friction?
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In solder, what happens to the melting point as the percentage of tin increases?
In solder, what happens to the melting point as the percentage of tin increases?
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What is the primary purpose of Brazing Alloys?
What is the primary purpose of Brazing Alloys?
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Which alloy is commonly used for marine castings and condenser tubes?
Which alloy is commonly used for marine castings and condenser tubes?
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What is the approximate melting point of Wood's Metal?
What is the approximate melting point of Wood's Metal?
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Which of the following alloys is NOT specifically mentioned as being used for marine applications?
Which of the following alloys is NOT specifically mentioned as being used for marine applications?
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Which of the following is NOT a property of Duralumin?
Which of the following is NOT a property of Duralumin?
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Which alloy is primarily recognized for its use in bells and gongs?
Which alloy is primarily recognized for its use in bells and gongs?
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What is the main application of Tinmann's Solder?
What is the main application of Tinmann's Solder?
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How does heat treatment affect the tensile strength of Duralumin?
How does heat treatment affect the tensile strength of Duralumin?
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What is the carbon content range for medium carbon steel?
What is the carbon content range for medium carbon steel?
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Which of the following alloys is NOT a type of brass?
Which of the following alloys is NOT a type of brass?
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What is the approximate percentage of tin in Soft Solder?
What is the approximate percentage of tin in Soft Solder?
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Which of the following is NOT a common application of Duralumin?
Which of the following is NOT a common application of Duralumin?
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Which of these is a property of mild steel?
Which of these is a property of mild steel?
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Which type of steel is best suited for making machine and gun parts due to its high tensile strength?
Which type of steel is best suited for making machine and gun parts due to its high tensile strength?
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Which of the following is a characteristic of brass?
Which of the following is a characteristic of brass?
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What is the primary use of cartridge brass (70% Cu, 30% Zn)?
What is the primary use of cartridge brass (70% Cu, 30% Zn)?
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How does heat treatment affect the properties of brass?
How does heat treatment affect the properties of brass?
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What is the primary difference between mild steel and medium carbon steel?
What is the primary difference between mild steel and medium carbon steel?
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Which of the following metals is NOT a non-ferrous alloy?
Which of the following metals is NOT a non-ferrous alloy?
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What is the primary application of high carbon steel?
What is the primary application of high carbon steel?
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What type of solder is used for joining lead pipes?
What type of solder is used for joining lead pipes?
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Which type of brass is known for its golden color and is suitable for all drawing and forming operations?
Which type of brass is known for its golden color and is suitable for all drawing and forming operations?
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Study Notes
Applied Science - Metals and Alloys
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Steel Types:
- Mild steel (low carbon) is easily weldable, has low tensile strength, and is resistant to shock and impact. Used in wires, chains, tubes, blades, and boiler plates.
- Medium carbon steel (0.3-0.6% carbon) is stronger and tougher than mild steel, can be hardened by heat treatment, and is resistant to shock; used in railway engineering (rails, wheels, axles), machine parts, and shafts.
- High carbon steel (0.6-1.5% carbon) is hard, tough, resistant to wear, creating sharp edges; used in tools, cutting instruments, and blades.
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Brass Alloys:
- Brasses are copper-zinc alloys.
- Varying percentages of zinc (up to 45%) and other metals (like tin, manganese, aluminum, iron, lead) give special properties.
- Strong, durable, machinable, corrosion resistant, and water resistant.
- Used in various applications (sheets, utensils, condenser tubes, architectural metalwork, jewelry, rivets, hardware).
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Copper Alloys:
- Pure copper is highly conductive, used in electrical transmission cables and appliances.
- Many alloys are used, mainly classified as Brasses and Bronzes.
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Bronzes:
- Bronze alloys are copper-tin alloys (with other possible added metals).
- They are tough, strong, corrosion-resistant, and machinable.
- Used in decorative items, utensils, cutlery, coinage, and tools (like gun barrels, hydraulic fittings, bearings).
Solders
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Types:
- Soft solders are low melting point alloys of tin and lead.
- The percentages of tin and lead affect the hardness.
- Brazing alloys are used for steel joints.
- Tinman's solder (66% tin, 34% lead) is used for joining tin articles.
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Uses:
- Used in electrical connections, tin cans, and for joining lead pipes.
Duralumin
- Composition: An aluminum alloy (95% aluminum, 4% copper, 0.5% magnesium, 0.5% manganese).
- Properties: Light, tough, ductile, corrosion resistant, easily castable.
- Applications: Aeronautics (aircraft parts), automotive components, and general engineering.
Wood's Metal
- Composition: A fusible alloy of bismuth, lead, tin, and cadmium.
- Properties: Low melting point (71°C).
- Applications: Safety plugs for pressure cookers, boilers, fire alarms, water sprinklers, taking impressions of coins or medals.
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Description
This quiz covers the properties and types of metals and alloys, focusing on steel and brass. Understand the various carbon levels in steel and their applications, as well as the composition and uses of brass alloys. Test your knowledge on the practical applications of these materials in different industries.
