1-Compact Graphite cast iron was obtained from fast cooling rates.? T F 2-Strength and ductility of nodular iron approximately the same under tension and compressive loads.? T F 3-The grey should be heated to 700 oC for 30 hours to obtain malleable iron? T F 4-The carbon in CGI alloys is neither flakes nor cementite? T F 5-Exhaust manifold manufactured from white cast iron.? T F 6-The reduced section length of the tensile specimen should be at least four times the diameter.? T F 7-Tangent modulus is taken as the slope of the stress–strain curve at yield stress? T F 8-The magnitude of the modulus of elasticity is a measure of the resistance to separation of adjacent atoms? T F 9-Tensile tests are performed more frequently than any other mechanical test.? T F 10-Rockwell hardness values rise above 120 or drop below 20 on any scale, they become inaccurate.? T F
1-Compact Graphite cast iron was obtained from fast cooling rates.? T F 2-Strength and ductility of nodular iron approximately the same under tension and compressive loads.? T F 3-The grey should be heated to 700 oC for 30 hours to obtain malleable iron? T F 4-The carbon in CGI alloys is neither flakes nor cementite? T F 5-Exhaust manifold manufactured from white cast iron.? T F 6-The reduced section length of the tensile specimen should be at least four times the diameter.? T F 7-Tangent modulus is taken as the slope of the stress–strain curve at yield stress? T F 8-The magnitude of the modulus of elasticity is a measure of the resistance to separation of adjacent atoms? T F 9-Tensile tests are performed more frequently than any other mechanical test.? T F 10-Rockwell hardness values rise above 120 or drop below 20 on any scale, they become inaccurate.? T F
Precision Machining Technology (MindTap Course List)
2nd Edition
ISBN:9781285444543
Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Chapter2: Measurement, Materials, And Safety
Section2.7: Heat Treatment Of Metals
Problem 4RQ: What type of hardening operation that leaves the inner core in a softer condition is sometimes...
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Question
1-Compact Graphite cast iron was obtained from fast cooling rates.?
T
F
2-Strength and ductility of nodular iron approximately the same under tension and compressive loads.?
T
F
3-The grey should be heated to 700 oC for 30 hours to obtain malleable iron?
T
F
4-The carbon in CGI alloys is neither flakes nor cementite?
T
F
5-Exhaust manifold manufactured from white cast iron.?
T
F
6-The reduced section length of the tensile specimen should be at least four times the diameter.?
T
F
7-Tangent modulus is taken as the slope of the stress–strain curve at yield stress?
T
F
8-The magnitude of the modulus of elasticity is a measure of the resistance to separation of adjacent atoms?
T
F
9-Tensile tests are performed more frequently than any other mechanical test.?
T
F
10-Rockwell hardness values rise above 120 or drop below 20 on any scale, they become inaccurate.?
T
F
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