080M40
(En8)
Applications
Its typically used for dynamo and motorshafts, heat-treated bolts, crankshafts, connection rods, driving rings and flanges, railway couplings, axles, brackets, housing, miscellaneous gun carriage and small arms parts not subjected to high stresses or severe wear.
| Forgeability |
Good |
| Heat Treatment Ability |
Good |
| Machineability |
Good |
| Weldability |
Average |
Chemical Composition
| ELEMENT |
MIN. |
MAX. |
| Carbon |
0.36 |
0.44 |
| Silicon |
0.10 |
0.40 |
| Manganese |
0.60 |
1.00 |
| Phosphorous |
- |
0.05 |
| Sulphur |
- |
0.05 |
Mechanical Properties
(Bright Cold Rolled or Bright Cold Drawn Only)
| |
Condition |
| |
N |
Q |
R |
| Limited Ruling Section, mm |
254 |
64 |
19 |
| Tensile Strength, MPa min. |
510/540 |
620/770 |
690/850 |
| Yield Stress; MPa min. |
245 |
385 |
465 |
| Elongation, % min. |
17 |
16 |
16 |
| Izod Impact Value; Joule |
20 |
33.4 |
33.4 |
| Brinnel Hardness Number |
152/207 |
179/229 |
201/255 |
Foreign Equivalent Specifications
| Standard German Mat. No. |
Din |
SAE |
AISI |
JIS |
|
1.0503
|
C45 |
1043 |
1043 |
- |
Stock Size Range
(Bright Dawn and Turned Round Bar)
| 6 mm |
0,222 kg/m |
25 mm |
3.853 kg/m |
60 mm |
22.195 kg/m |
125 mm |
96.337 kg/m |
| 7 mm |
0.302 kg/m |
1" |
3.978 kg/m |
2 ½" |
24.861 kg/m |
130 mm |
104.195 kg/m |
| 8 mm |
0.395 kg/m |
26 mm |
4.168 kg/m |
65 mm |
26.049 kg/m |
5 1/4" |
109.634 kg/m |
| 9 mm |
0.499 kg/m |
28 mm |
4.824 kg/m |
2 5/8" |
27.408 kg/m |
135 mm |
112.364 kg/m |
| 3/8" |
0.599 kg/m |
1 1/8" |
5.034 kg/m |
2 3/4" |
30.018 kg/m |
5 ½" |
120.323 kg/m |
| 10 mm |
0.617 kg/m |
30 mm |
5.549 kg/m |
70 mm |
30.210 kg/m |
140 mm |
120.841 kg/m |
| 11 mm |
0.746 kg/m |
1 1/4" |
6.215 kg/m |
2 7/8" |
32.878 kg/m |
145 mm |
129.627 kg/m |
| 7/16" |
0.761 kg/m |
32 mm |
6.313 kg/m |
75 mm |
34.680 kg/m |
5 3/4" |
131.511 kg/m |
| 12 mm |
0.888 kg/m |
1 3/8" |
7.520 kg/m |
3" |
35.799 kg/m |
150 mm |
138.721 kg/m |
| ½" |
0.994 kg/m |
35 mm |
7.553 kg/m |
80 mm |
39.458 kg/m |
6" |
143.195 kg/m |
| 14 mm |
1.175 kg/m |
36 mm |
7.990 kg/m |
3 1/4" |
42.013 kg/m |
155 mm |
148.123 kg/m |
| 9/16" |
1.259 kg/m |
38 mm |
8.903 kg/m |
85 mm |
44.545 kg/m |
160 mm |
157.833 kg/m |
| 15 mm |
1.387 kg/m |
1½" |
8.950 kg/m |
3½" |
48.726 kg/m |
|
|
| 5/8" |
1.554 kg/m |
40 mm |
9.865 kg/m |
90 mm |
49.939 kg/m |
|
|
| 16 mm |
1.578 kg/m |
1 5/8" |
10.504 kg/m |
95 mm |
55.642 kg/m |
|
|
| 17 mm |
1.782 kg/m |
42 mm |
10.876 kg/m |
3 3/4" |
55.936 kg/m |
|
|
| 18 mm |
1.998 kg/m |
1 3/4" |
12.181 kg/m |
100 mm |
61.654 kg/m |
|
|
| 19 mm |
2.226 kg/m |
45 mm |
12.485 kg/m |
4" |
63.642 kg/m |
|
|
| 20 mm |
2.466 kg/m |
1 7/8" |
13.984 kg/m |
105 mm |
67.973 kg/m |
|
|
| 13/16" |
2.626 kg/m |
48 mm |
14.205 kg/m |
4 1/4" |
71.846 kg/m |
|
|
| 21 mm |
2.719 kg/m |
50 mm |
15.413 kg/m |
110 mm |
74.601 kg/m |
|
|
| 22 mm |
2.984 kg/m |
2" |
15.911 kg/m |
4 ½" |
80.547 kg/m |
|
|
| 7/8" |
3.045 kg/m |
2 1/8" |
17.962 kg/m |
115 mm |
81.537 kg/m |
|
|
| 15/16" |
3.496 kg/m |
55 mm |
18.650 kg/m |
120 mm |
88.781 kg/m |
|
|
| 24 mm |
3.551 kg/m |
2 1/4" |
20.137 kg/m |
4 3/4" |
89.745 kg/m |
|
|
Larger sizes in black bar and forgings are also available but
remember to allow for surface removal of + 6% to ensure cleanup.
