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35 Cards in this Set
- Front
- Back
Malleabillity of a metal usually increases with the addition of A. Aluminum B. Heat C. Molybdenum D. Copper |
B. Heat |
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What results from removing nearly all the impurities and carbon from pig iron? A. Mild steel B. Cast iron C. Stainless steel D. Wrought iron |
D. Wrought iron |
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Copper will become soft when it is A. Mixed with wrought-iron B. Stretched C. Hammered D. Heated and cooled quickly in water |
D. Heated and cooled quickly in water |
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White metal is an alloy of _______ and ________. A. Copper and zinc B. Lead and tin C. Copper and vanadium D copper and tungsten |
B. Lead and tin |
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Ability to resist wear, abrasion, cutting and indentation. Ex. Carbon steel and chilled cast iron. Hardness. Toughness. Ductility. Malleabillity. Brittleness. Stiffness. Plasticity. Elasticity. |
Hardness |
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Ability to withstand impact or shock. Ex. Wrought iron, wrought steel Hardness. Toughness. Ductility. Malleabillity. Brittleness. Stiffness. Plasticity. Elasticity. |
Toughness |
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Ability to be drawn out in tension without breaking. Ex. Mild steel, aluminum Hardness. Toughness. Ductility. Malleabillity. Brittleness. Stiffness. Plasticity. Elasticity. |
Ductility |
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Ability to be extended by hammering without fracture. Ex. Copper, aluminum Hardness. Toughness. Ductility. Malleabillity. Brittleness. Stiffness. Plasticity. Elasticity. |
Malleabillity |
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Permits no permanent deformation before breaking. Ex. Cast iron Hardness. Toughness. Ductility. Malleabillity. Brittleness. Stiffness. Plasticity. Elasticity. |
Brittleness |
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Ability to resist deformation (bending). Ex. Steel Hardness. Toughness. Ductility. Malleabillity. Brittleness. Stiffness. Plasticity. Elasticity. |
Stiffness |
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These materials are very soft and easily deformed. Ex. Copper, aluminum Hardness. Toughness. Ductility. Malleabillity. Brittleness. Stiffness. Plasticity. Elasticity. |
Plasticity |
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Ability to resume original shape and dimensions after an external load or force acting upon it is removed. Ex. Wrought iron Hardness. Toughness. Ductility. Malleabillity. Brittleness. Stiffness. Plasticity. Elasticity. |
Elasticity |
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________ metals contain iron; ________ metals are metals other than iron or steel. |
Ferrous, nonferrous |
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Name two common types of Hardness testing machines. A. B. |
A. Brinell tester B. Rockwell tester |
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In production of cast iron, the percentage carbon in the resulting molten iron is A. 10%-15% B. 2%-4% C. 0%-2% |
B. 2%-4% |
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brass is primarily a mixture of what two elements? A. B. |
A. Copper B. Zinc |
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Bronze is mainly an alloy of _____ and _______. It may also contain ______ and ______. |
Copper and tin. Zinc and lead |
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Aluminum is formed by electrolasis from _______ ________. |
Bauxite ore |
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The strength of cast iron depends on: A) How much copper it contains B) The amount of lead it contains C) The amount of lead and copper it contains D) The proportion of carbon and graphite E) The proportion of wrought iron |
D) The proportion of carbon and graphite |
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Bearing metal: 1. Is sometimes called Babbitt metal 2. Is sometimes called white metal 3. Can be heated to any temperature 4. Can be made for different types of service A) 1, 2, 3 B) 3, 4 C) 1, 2, 4 D) 2, 3, 4 E) 1, 3, 4
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C) 1, 2, 4 |
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Aluminium alloys are used in the construction of: A) Bearing shells B) Valves and piping C) Condenser tubes D) Internal combustion engine parts E) Motor casings |
D) Internal combustion engine parts |
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Medium carbon steel becomes difficult to weld when the carbon content exceeds: A) 10% B) 0.35% C) 0.25% D) 0.1% E) 3.5% |
B) 0.35% |
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When chromium is added to alloy steel, it produces: A) Increased ductility B) Improved malleability C) Improved machinability D) Increased hardness E) Increased toughness
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D) Increased hardness |
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The result of removing nearly all the impurities and carbon from pig iron is: A) Coke B) Wrought iron C) Low carbon steel D) Steel E) White cast iron
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B) Wrought iron |
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Which of the following metals is the most ductile? A) Chilled cast iron B) High carbon steel C) White cast iron D) Copper E) High speed steel
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D) Copper |
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In order to avoid residual stresses after welding, alloy steels: A) Must be heated after welding B) Should be heated before, during and after welding C) Are not affected by carbon content D) Cannot contain any copper E) Must contain copper |
B) Should be heated before, during and after welding |
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Tin based white metal (Babbitt) is composed of: A) 85% tin, 0.35% lead, 7% copper, 7% antimony B) 89% lead, 7% tin, 3% copper and 1% antimony C) 75% tin, 15% lead, 10% copper and 5% silver D) 75% lead, 9% tin, 10% antimony and 6% arsenic E) 10% tin, 7% antimony, 75% lead and 7% copper
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A) 85% tin, 0.35% lead, 7% copper, 7% antimony |
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An element that reduces creep in metal is: A) Nickel B) Molybdenum C) Manganese D) Vanadium E) Copper
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B) Molybdenum |
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Which type of cast iron is the toughest? A) Dark grey cast iron B) Malleable cast iron C) Pig iron D) White cast iron E) Wrought iron
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B) Malleable cast iron |
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Wrought iron: A) Is produced by annealing B) Is a non-ferrous metal C) Is corrosion resistant D) Is stronger than steel E) Contains a high percentage of carbon
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C) Is corrosion resistant |
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In the process of forming iron, limestone is added to: A) The iron ore in the moulds B) Make the resulting pig iron more malleable C) Pig iron moulds D) Increase the pig iron elasticity E) The molten iron ore in order to form slag
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E) The molten iron ore in order to form slag |
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Bismuth, silver and antimony are sometimes found in: A) Bronze B) Copper C) Chrome products D) Bearing metals E) Brass |
D) Bearing metals |
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Copper alloys are: A) Less resistant to corrosion than copper B) Harder to machine than copper C) Not as strong as copper itself D) Much lower in carbon content than copper E) Easier to machine than copper itself |
E) Easier to machine than copper itself |
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Which of the following metals is the most ductile? A) High carbon steel B) Copper C) High speed steel D) White cast iron E) Chilled cast iron |
B) Copper |
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Stainless steel: A) Has a high carbon content B) Is not an alloy steel C) Contains a high percentage of chromium D) Is corrosion resistant E) Has a high graphite content |
D) Is corrosion resistant |