Mechanical Properties of Steel
Condition, Strength, Hardness, Machinability
Stainless Steels
AISI
Materials Condition
Tensile Strength ksi
Yield Strength ksi
Hardness
Machinability % of CD1212
Permeability
Brinell
Rockwell
Annealed
Drawn
Type 302HQ
Annealed Bars
75-95
35-55
150-180
80-90B
60
Non-Magnetic
Non-Magnetic to Slightly
Type 303
Annealed Bars
85-95
30-40
160-180
83-95B
73
Non-Magnetic
Magnetic
Type 304
Annealed Bars
80-90
30-40
150-180
80-90B
45
Non-Magnetic
Slightly
Type 316
Annealed Bars
75-90
30-40
150-180
80-90B
40
Non-Magnetic
Non-Magnetic to Slightly
Type 410
Annealed Bars
70-100
35-45
150-200
80-90B
55
Magnetic
Magnetic
Type 416
Annealed Bars
80-100
55-65
190-220
90-95B
90
Magnetic
Magnetic
Type 17-4
Bars Cond. A
150
110
320
35C
45
Magnetic
Magnetic
Cond. H 900
200
185
415
44C
Cond. H 1025
170
165
352
38C
Alloy Steels
SAE No.
Machinability Rating
Condition
Range of Typical Hardness (Brinell)
4037
70
Annealed and Cold Drawn
174-217
8620
65
Hot Rolled and Cold Drawn
179-235
8630
70
Annealed and Cold Drawn
179-229
4130
70
Annealed and Cold Drawn
187-229
4140
65
Annealed and Cold Drawn
187-229
Carbon Steels - Rephosphorized & Resulphurized
Grade
Type of Processing
Estimated Minimum Values
Brinell
Hardness
Average Machinability Rating (Cold Drawn 1112-100%)
Tensile Strength
psi
Yield Strength
psi
1006
Hot rolled
43,000
24,000
86
Cold drawn
48,000
41,000
95
50
1008
Hot rolled
44,000
24,500
86
Cold drawn
49,000
41,500
95
55
1010
Hot rolled
47,000
26,000
95
Cold drawn
53,000
44,000
105
55
1018
Hot rolled
58,000
32,000
116
Cold drawn
64,000
54,000
126
70
1022
Hot rolled
62,000
34,000
121
Cold drawn
69,000
58,000
137
70
1038
Hot rolled
75,000
41,000
149
Cold drawn
83,000
70,000
163
65
1045
Hot rolled
82,000
45,000
163
Cold drawn
91,000
77,000
179
55
ACD
85,000
73,000
170
65
1212
Hot rolled
56,000
33,500
121
Cold drawn
78,000
60,000
167
100
12L14
Hot rolled
57,000
34,000
121
Cold drawn
78,000
60,000
163
160
1215
Hot rolled
57,000
34,000
121
Cold drawn
75,000
65,000
163
160
1117
Hot rolled
62,000
34,000
121
Cold drawn
69,000
58,000
137
90
1141
Hot rolled
94,000
51,500
187
Cold drawn
105,100
88,000
212
70
1144
Hot rolled
97,000
53,000
197
Cold drawn
108,000
90,000
217
80
ACD - annealed, cold drawn.
All SAE 1100 series steels are rated on the basis of 0,10 max. silicon or coarse grain melting practice.
The mechanical properties shown are expected minimums for the sizes ranging from 3/4" to 1 1/4".
REF: SAE J414, Handbook Supplement HS30.
Hardness Relationship to Tensile Strength
Tensile Strength (Approx.) ksi
Rockwell Hardness No.
Hardness No.
B Scale
C Scale
56
65.7
111
60
69.8
121
65
74.0
131
71
78.7
143
76
82.9
156
81
86.0
167
85
87.8
174
90
90.7
187
95
92.8
197
100
94.6
207
105
96.4
217
110
97.8
20
226
114
99.0
22
237
117
100.0
23
243
120
24
247
122
25
253
125
26
258
128
27
264
132
28
271
135
29
279
138
30
286
142
31
294
145
32
301
149
33
311
153
34
319
157
35
327
162
36
336
168
37
344
171
38
353
176
39
362
181
40
371
188
41
381
194
42
390
201
43
400
208
44
409
215
45
421
222
46
432
The technical material presented in this appendix is for general reference only. Every attempt has been made to ensure the accuracy thereof; however, Pivot Point does not warrant in any way the accuracy or completeness of the information presented. It is the sole responsibility of the user to determine material and design suitability for their specific application.
