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lication requires ultimate tensile strength and yield strength of a steel at 110 ksi and 91 ksi, respectively. Answer the following 4 questions: 4.1. Can SAE 1040 steel be selected for this application? 4.2. 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? 4.3. Why is that steel with the condition in part II selected? 4.4. Is the selected steel brittle or ductile? and Why?

lication requires ultimate tensile strength and yield strength of a steel at 110 ksi and 91 ksi, respectively. Answer the following 4 questions: 4.1. Can SAE 1040 steel be selected for this application? 4.2. 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? 4.3. Why is that steel with the condition in part II selected? 4.4. Is the selected steel brittle or ductile? and Why?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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An application requires ultimate tensile strength and yield strength of
a steel at 110 ksi and 91 ksi, respectively. Answer the following 4 questions:
4.1. Can SAE 1040 steel be selected for this application?
4.2. 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?
4.3. Why is that steel with the condition in part II selected?
4.4. Is the selected steel brittle or ductile? and Why?

A–10 Typical properties of carbon and alloy steels. Ultimate strength, s̟ Yield strength, s, Percent Material SAE no. Condition ksi MPa ksi MPа elongation 1020 Annealed 57 393 43 296 36 1020 Hot rolled 65 448 48 331 36 1020 Cold drawn 75 517 64 441 20 517 621 1040 Annealed 75 51 352 30 1040 Hot rolled 90 60 414 25 97 127 1040 Cold drawn 669 82 565 16 1040 WQT 700 WQT 900 WQT 1100 WQT 1300 876 93 641 19 1040 118 814 90 621 22 1040 738 80 63 107 552 24 1040 87 600 434 32 1080 Annealed 89 614 54 372 25 OQT 700 OQT 900 OQT 1100 OQT 1300 1080 189 1303 141 972 12 1080 179 1234 129 889 13 1080 145 1000 103 710 17 1080 117 807 70 483 23 1141 Annealed 87 600 51 352 26 1141 Cold drawn 112 772 95 655 14 1141 OQT 700 OQT 900 OQT 1100 OQT 1300 193 1331 172 1186 9 1141 146 1007 129 889 15 1141 116 800 97 669 20 1141 94 648 68 469 28 655 1593 4140 Annealed 95 60 414 26 4140 212 OQT 700 OQT 900 OQT 1100 OQT 1300 231 1462 12 4140 187 1289 173 1193 15 4140 147 1014 131 903 18 4140 118 814 101 696 23 724 40 238 5160 Annealed 105 276 17 5160 OQT 700 263 1813 1641 9 OQT 900 OQT 1100 OQT 1300 5160 196 1351 179 1234 12 5160 149 1027 132 910 17 5160 115 793 103 710 23
Transcribed Image Text:A–10 Typical properties of carbon and alloy steels. Ultimate strength, s̟ Yield strength, s, Percent Material SAE no. Condition ksi MPa ksi MPа elongation 1020 Annealed 57 393 43 296 36 1020 Hot rolled 65 448 48 331 36 1020 Cold drawn 75 517 64 441 20 517 621 1040 Annealed 75 51 352 30 1040 Hot rolled 90 60 414 25 97 127 1040 Cold drawn 669 82 565 16 1040 WQT 700 WQT 900 WQT 1100 WQT 1300 876 93 641 19 1040 118 814 90 621 22 1040 738 80 63 107 552 24 1040 87 600 434 32 1080 Annealed 89 614 54 372 25 OQT 700 OQT 900 OQT 1100 OQT 1300 1080 189 1303 141 972 12 1080 179 1234 129 889 13 1080 145 1000 103 710 17 1080 117 807 70 483 23 1141 Annealed 87 600 51 352 26 1141 Cold drawn 112 772 95 655 14 1141 OQT 700 OQT 900 OQT 1100 OQT 1300 193 1331 172 1186 9 1141 146 1007 129 889 15 1141 116 800 97 669 20 1141 94 648 68 469 28 655 1593 4140 Annealed 95 60 414 26 4140 212 OQT 700 OQT 900 OQT 1100 OQT 1300 231 1462 12 4140 187 1289 173 1193 15 4140 147 1014 131 903 18 4140 118 814 101 696 23 724 40 238 5160 Annealed 105 276 17 5160 OQT 700 263 1813 1641 9 OQT 900 OQT 1100 OQT 1300 5160 196 1351 179 1234 12 5160 149 1027 132 910 17 5160 115 793 103 710 23
Expert Solution
Step 1

4.1. Can SAE 1040 steel be selected for this application?

Ans :Yes, SAE 1040 steel can be selected for this application.

 

4.2. 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?

Ans: Yes,

SAE 1040 steel , Condition: WQT 700

ultimate tensile strength =127 ksi

and yield strength= 93 ksi

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