18. What is the range of carbon concentrations for steels? 4.3...6.67% 0.8...6.67% 0.8...2.14% 0.05..2.14% O 2.14...4.3%

Precision Machining Technology (MindTap Course List)
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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 2RQ: Direct hardening can be performed on steel containing at least________ carbon.
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18. What is the range of carbon concentrations for steels? *
4.3...6.67%
0.8...6.67%
0.8...2.14%
0.05...2.14%
2.14...4.3%
19. Which of the steels is hypereutectoid steel? *
AISI 2024 (GOST A16)
AISI 1045 (GOST 45)
AISI 5130 (GOST 30X)
AISI W1-13 (GOST Y13)
AISI 1008 (GOST 08)
Transcribed Image Text:18. What is the range of carbon concentrations for steels? * 4.3...6.67% 0.8...6.67% 0.8...2.14% 0.05...2.14% 2.14...4.3% 19. Which of the steels is hypereutectoid steel? * AISI 2024 (GOST A16) AISI 1045 (GOST 45) AISI 5130 (GOST 30X) AISI W1-13 (GOST Y13) AISI 1008 (GOST 08)
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