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21 Cards in this Set
- Front
- Back
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3 basic classifications by which material properties are defined |
Chemical Physical Mechanical |
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What 3 processes are examples in which new molecules are formed |
Corrosion Oxidization Reduction |
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What type of corrosion occurs when one substance reacts with another to create a new compound |
Chemical |
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What is the effect of erosion on the corrosion barrier of a metal? |
It exposes a fresh metal that will corrode, thereby accelerating damage |
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What is the composition of a material referred to as a ferrous metal? |
Those that have an appreciable or large enough iron content to affect the properties of a metal( more than 50% iron) |
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What term describes alloys that have a major component other than iron? |
Non-ferrous metals |
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What term describes a mixture in which one or more other elements, not chemically bonded, have been added to various grades of carbon steel ? |
Alloy steel |
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What primary alloy gives stainless steels their corrosion resistance? |
Chromium |
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Which element produces the greatest hardening effect of any element except carbon in steel and at the same time reduces any enlargement of the grain structure? |
Molybdenum |
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What does the addition of nickel do to carbon steel |
Increases the ductility of steel while allowing it to maintain its strength |
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What safety hazard could be created by grinding or polishing alloy metals? |
Dust sized particles of oxides or other compounds can cause respiratory difficulties. |
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What might happen if you stay in an area where the purge gases have displaced the oxygen |
You may suffer oxygen starvation or suffocation |
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How should you protect yourself from hazardous dusts or fumes working with alloys? |
Appropriate niosh-rated filter |
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What type of corrosion is occurring when one substance reacts with another to create a new compound? |
Chemical |
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What is the alloy content required for a steel to be considered high alloy steel |
Over 10 percent |
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What process is used on stainless steel where the reaction dissolves a very thin layer of material and removes defects on the surface such as heat tint, weld slag or iron contamination? |
Pickling |
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What type of post weld treatment is required on nickel alloys to maintain or restore corrosion resistance? |
None |
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Which post heat treatment requires the metal to be kept at a below temperature until it is heated through? |
Stress relieving |
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Which element is added to a steel to strengthen and develop red hardness |
Cobalt. |
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How many categories of copper alloy are there? |
Nine |
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How does monel and inconel alloys achieve their high strength |
Cold working of the material |
