| TENSILE STRENGTH TO HARDNESS CONVERSION CHART | ||||||
Brinell |
Vickers or Firth Hardness No. |
Rockwell |
Scleroscope No. |
Approximate Tensile Strength 1000 psi |
||
Dia. (mm): 3000-kg Load 10-mm Ball |
Hardness No. |
C |
B |
|||
2.05 |
898 |
440 |
||||
2.10 |
857 |
420 |
||||
2.15 |
817 |
401 |
||||
2.20 |
780 |
1150 |
70 |
106 |
384 |
|
2.25 |
745 |
1050 |
68 |
100 |
368 |
|
2.30 |
712 |
960 |
66 |
95 |
352 |
|
2.35 |
682 |
885 |
64 |
91 |
337 |
|
2.40 |
653 |
820 |
62 |
87 |
324 |
|
2.45 |
627 |
765 |
60 |
84 |
311 |
|
2.50 |
601 |
717 |
58 |
81 |
298 |
|
2.55 |
578 |
675 |
57 |
78 |
287 |
|
2.60 |
555 |
633 |
55 |
120 |
75 |
276 |
2.65 |
534 |
598 |
53 |
119 |
72 |
266 |
2.70 |
514 |
567 |
52 |
119 |
70 |
256 |
2.75 |
495 |
540 |
50 |
117 |
67 |
247 |
2.80 |
477 |
515 |
49 |
117 |
65 |
238 |
2.85 |
461 |
494 |
47 |
116 |
63 |
229 |
2.90 |
444 |
472 |
46 |
115 |
61 |
220 |
2.95 |
429 |
454 |
45 |
115 |
59 |
212 |
3.00 |
415 |
437 |
44 |
114 |
57 |
204 |
3.05 |
401 |
420 |
42 |
113 |
55 |
196 |
3.10 |
388 |
404 |
41 |
112 |
54 |
189 |
3.15 |
375 |
389 |
40 |
112 |
52 |
182 |
3.20 |
363 |
375 |
38 |
110 |
51 |
176 |
3.25 |
352 |
363 |
37 |
110 |
49 |
170 |
3.3 |
341 |
350 |
36 |
109 |
48 |
165 |
3.35 |
331 |
339 |
35 |
109 |
46 |
160 |
3.40 |
321 |
327 |
34 |
108 |
45 |
155 |
3.45 |
311 |
316 |
33 |
108 |
44 |
150 |
3.50 |
302 |
305 |
32 |
107 |
43 |
146 |
3.55 |
293 |
296 |
31 |
106 |
42 |
142 |
3.60 |
285 |
287 |
30 |
105 |
40 |
138 |
3.65 |
277 |
279 |
29 |
104 |
39 |
134 |
3.70 |
269 |
270 |
28 |
104 |
38 |
131 |
3.75 |
262 |
263 |
26 |
103 |
37 |
128 |
3.80 |
255 |
256 |
25 |
102 |
37 |
125 |
3.85 |
248 |
248 |
24 |
102 |
36 |
122 |
3.90 |
241 |
241 |
23 |
100 |
35 |
119 |
3.95 |
235 |
235 |
22 |
99 |
34 |
116 |
4.00 |
229 |
229 |
21 |
98 |
33 |
113 |
4.05 |
223 |
223 |
20 |
97 |
32 |
110 |
4.10 |
217 |
217 |
18 |
96 |
31 |
107 |
4.15 |
212 |
212 |
17 |
96 |
31 |
104 |
4.20 |
207 |
207 |
16 |
95 |
30 |
101 |
4.25 |
202 |
202 |
15 |
94 |
30 |
99 |
4.30 |
197 |
197 |
13 |
93 |
29 |
97 |
4.35 |
192 |
192 |
12 |
92 |
28 |
95 |
4.40 |
187 |
187 |
10 |
91 |
28 |
93 |
4.45 |
183 |
183 |
9 |
90 |
27 |
91 |
4.50 |
179 |
179 |
8 |
89 |
27 |
89 |
4.55 |
174 |
174 |
7 |
88 |
26 |
87 |
4.60 |
170 |
170 |
6 |
87 |
26 |
85 |
4.65 |
166 |
166 |
4 |
86 |
25 |
83 |
4.70 |
163 |
163 |
3 |
85 |
25 |
82 |
4.75 |
159 |
159 |
2 |
84 |
24 |
80 |
4.80 |
156 |
156 |
1 |
83 |
24 |
78 |
4.85 |
153 |
153 |
82 |
23 |
76 |
|
4.90 |
149 |
149 |
81 |
23 |
75 |
|
4.95 |
146 |
146 |
80 |
22 |
74 |
|
5.00 |
143 |
143 |
79 |
22 |
72 |
|
5.05 |
140 |
140 |
78 |
21 |
71 |
|
5.10 |
137 |
137 |
77 |
21 |
70 |
|
5.15 |
134 |
134 |
76 |
21 |
68 |
|
5.20 |
131 |
131 |
74 |
20 |
66 |
|
5.25 |
128 |
128 |
73 |
65 |
||
5.30 |
126 |
126 |
72 |
64 |
||
5.35 |
124 |
124 |
71 |
63 |
||
5.40 |
121 |
121 |
70 |
62 |
||
5.45 |
118 |
118 |
69 |
61 |
||
5.50 |
116 |
116 |
68 |
60 |
||
5.55 |
114 |
114 |
67 |
59 |
||
5.60 |
112 |
112 |
66 |
58 |
||
5.65 |
109 |
109 |
65 |
56 |
||
5.70 |
107 |
107 |
64 |
56 |
||
5.75 |
105 |
105 |
62 |
54 |
||
5.80 |
103 |
103 |
61 |
53 |
||
5.85 |
101 |
101 |
60 |
52 |
||
5.90 |
99 |
99 |
59 |
51 |
||
5.95 |
97 |
97 |
57 |
50 |
||
6.00 |
95 |
95 |
56 |
49 |
||