4140 is a medium carbon, chromium-molybdenum, through hardening alloy steel which has good hardenability and displays high strength and toughness with good fatigue and impact resistance after heat treating.
Chemical Composition |
Grade |
C |
Mn |
P |
S |
Si |
Cr |
Mo |
4140 |
.38/.43 |
.75/1.00 |
.035 Max |
.040 Max |
.15/.35 |
.80/1.10 |
.15/.25 |
Applications: Cams, Bolts, Chain Pins, Drill Collars, Gears, Spindles and for applications where high torque loading may be a factor such as Axles, Pinions, Boring Bars and Universal Joints.
AVAILABLE IN THE FOLLWING SIZES
STOCK LENGTHS: 20’ RANDOM |
Size |
Lbs. Per Ft. |
Annealed |
Q&T |
Size |
Lbs. Per Ft. |
Annealed |
Q&T |
5/8" |
1.044 |
X |
X |
5-1/2" |
80.86 |
X |
X |
3/4" |
1.504 |
X |
X |
6" |
96.22 |
X |
X |
7/8" |
2.046 |
X |
X |
6-1/4" |
104.4 |
|
X |
1" |
2.673 |
X |
X |
6-1/2" |
112.9 |
X |
X |
1-1/8" |
3.383 |
X |
X |
7" |
131.0 |
X |
X |
1-1/4" |
4.176 |
X |
X |
7-1/4" |
140.5 |
X |
X |
1-1/2" |
6.014 |
X |
X |
7-1/2" |
150.4 |
X |
X |
1-5/8" |
7.058 |
|
X |
7-3/4" |
160.5 |
|
X |
1-3/4" |
8.186 |
X |
X |
8" |
171.1 |
X |
X |
2" |
10.69 |
X |
X |
8-1/4" |
181.9 |
X |
X |
2-1/4" |
13.53 |
X |
X |
8-1/2" |
193.1 |
X |
X |
2-1/2" |
16.71 |
X |
X |
9" |
216.5 |
X |
X |
2-3/4" |
20.21 |
X |
X |
9-1/2" |
241.2 |
X |
X |
3" |
24.06 |
X |
X |
10" |
267.3 |
X |
X |
3-1/4" |
28.23 |
X |
X |
10-1/2" |
294.7 |
X |
X |
3-1/2" |
32.74 |
X |
X |
11" |
323.4 |
X |
X |
3-3/4" |
37.59 |
X |
X |
11-1/2" |
353.5 |
|
X |
4" |
42.77 |
X |
X |
12" |
384.9 |
X |
X |
4-1/4" |
48.28 |
X |
X |
12-1/2" |
417.6 |
X |
X |
4-1/2" |
54.13 |
X |
X |
14" |
523.9 |
X |
X |
4-5/8" |
57.18 |
|
X |
15" |
601.4 |
X |
X |
4-3/4" |
60.31 |
X |
X |
16" |
684.3 |
X |
X |
5" |
66.82 |
X |
X |
18" |
866.0 |
X |
X |
5-1/4" |
73.67 |
X |
X |
|
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