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
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
Related questions
Question
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?
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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