materials and science engineering Lab reports
k.ni9me
Experiment7Data.docx
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Steel 4140 |
||||
|
|
Left |
Middle |
Right |
AVG |
|
Hardness (HRA) |
42.7 |
48.4 |
45.2 |
45.4 |
|
Diameter (in.) |
0.996 |
0.994 |
0.995 |
0.995 |
|
Steel 1410 |
||||
|
|
Left |
Middle |
Right |
AVG |
|
Hardness (HRA) |
46.7 |
44.4 |
51.8 |
47.6 |
|
Diameter (in.) |
0.994 |
0.995 |
0.995 |
0.995 |
|
Steel 1410 Rockwell A (HRA) Measurements |
|||
|
|
Every 1/16 inch for 1 inch |
Every 1/8 inch for 1 inch |
Every 1/4 inch for 2 inches |
|
1 |
23.0 |
45.9 |
41.9 |
|
2 |
45.7 |
47.1 |
42.0 |
|
3 |
47.8 |
46.6 |
40.9 |
|
4 |
46.0 |
44.9 |
29.5 |
|
5 |
46.0 |
46.7 |
32.7 |
|
6 |
45.1 |
47.5 |
42.5 |
|
7 |
47.1 |
45.3 |
43.0 |
|
8 |
46.9 |
43.3 |
21.8 |
|
9 |
45.2 |
|
|
|
10 |
47.7 |
|
|
|
11 |
47.8 |
|
|
|
12 |
46.9 |
|
|
|
13 |
46.8 |
|
|
|
14 |
55.8 |
|
|
|
15 |
45.9 |
|
|
|
16 |
46.6 |
|
|
|
Steel 4140 Rockwell A (HRA) Measurements |
|||
|
|
Every 1/16 inch for 1 inch |
Every 1/8 inch for 1 inch |
Every 1/4 inch for 2 inches |
|
1 |
69.8 |
60.3 |
57.5 |
|
2 |
73.2 |
61.4 |
55.4 |
|
3 |
72.2 |
59.4 |
51.2 |
|
4 |
72.4 |
60.1 |
57.7 |
|
5 |
72.0 |
58.1 |
53.2 |
|
6 |
73.2 |
58.3 |
72.5 |
|
7 |
73.1 |
59.7 |
64.2 |
|
8 |
72.0 |
58.7 |
63.7 |
|
9 |
70.5 |
|
|
|
10 |
69.1 |
|
|
|
11 |
67.7 |
|
|
|
12 |
67.4 |
|
|
|
13 |
65.4 |
|
|
|
14 |
63.2 |
|
|
|
15 |
62.1 |
|
|
|
16 |
63.2 |
|
|
