An application requires ultimate tensile strength and yield strength ofa steel at 110 ksi and 91 ksi, respectively. Answer the following 4 questions:Can SAE 1040 steel be selected for this application?If “no” is the answer in Part I, the following Part II, III, and IV can beignored. If “yes” is the answer in Part I, which condition of SAE 1040 shouldbe selected?Why is that steel with the condition in part II selected?Is the selected steel brittle or ductile? and Why? A–10 Typical properties of carbon and alloy steels.Ultimate strength, s̟Yield strength, s,PercentMaterial SAE no.ConditionksiMPaksiMPаelongation1020Annealed5739343296361020Hot rolled6544848331361020Cold drawn7551764441205176211040Annealed7551352301040Hot rolled906041425971271040Cold drawn66982565161040WQT 700WQT 900WQT 1100WQT 13008769364119104011881490621221040738806310755224104087600434321080Annealed896145437225OQT 700OQT 900OQT 1100OQT 1300108018913031419721210801791234129889131080145100010371017108011780770483231141Annealed8760051352261141Cold drawn11277295655141141OQT 700OQT 900OQT 1100OQT 1300193133117211869114114610071298891511411168009766920114194648684692865515934140Annealed9560414264140212OQT 700OQT 900OQT 1100OQT 1300231146212414018712891731193154140147101413190318414011881410169623724402385160Annealed105276175160OQT 700263181316419OQT 900OQT 1100OQT 1300516019613511791234125160149102713291017516011579310371023

I. Can SAE 1040 steel be selected for this application? Yes, It can be selected. Because the…

n application requires ultimate tensile strength and yield strength of a steel at 110 ksi and 91 ksi, respectively. Answer the following 4 questions: Can SAE 1040 steel be selected for this application? If “no” is the answer in Part I, the following Part II, III, and IV can be ignored. If “yes” is the answer in Part I, which condition of SAE 1040 should be selected? Why is that steel with the condition in part II selected? Is the selected steel brittle or ductile? and Why?

n application requires ultimate tensile strength and yield strength of a steel at 110 ksi and 91 ksi, respectively. Answer the following 4 questions: Can SAE 1040 steel be selected for this application? If “no” is the answer in Part I, the following Part II, III, and IV can be ignored. If “yes” is the answer in Part I, which condition of SAE 1040 should be selected? Why is that steel with the condition in part II selected? Is the selected steel brittle or ductile? and Why?

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 2RQ: Direct hardening can be performed on steel containing at least________ carbon.

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