AISI 1045

This is a fully killed steel produced to fine grain practice by the electric arc or basic oxygen furnace process. Its relatively high strength coupled with reasonably good ductility make it a natural choice for miscellaneous parts such as shafts and gears.

Special welding procedures are required in welding this grade because its relatively high carbon and manganese content promote high hardness and brittleness in the heat affected zone.

It is the most common shafting steel in the medium carbon range.

TYPICAL CHEMICAL ANALYSIS
Carbon (C).43-.50
Manganese (Mn).60-.90
Sulphur (S) .05 max
Phosphorus (P) .04 max.

Metric Size Size (inches) Est. Weight
per Ft. (lbs)
5 0.1969 0.114
6 . 2362 .165
8 .315 .292
10 0.3937 0.414
11 0.4331 0.501
12 0.4724 0.596
13 0.5118 0.699
14 0.5512 0.811
15 0.5906 0.931
16 0.6299 1.059
17 0.6693 1.196
18 0.7087 1.341
19 0.748 1.494
20 0.7874 1.655
25 0.9843 2.586
30 1.1811 3.724
35 1.378 5.069
Metric Size Size (inches) Est. Weight
per Ft. (lbs)
40 1.5748 6.621
45 1.7717 8.379
50 1.9685 10.35
55 2.1654 12.52
60 2.3622 14.9
65 2.5591 17.48
70 2.7559 20.286
75 2.952 23.3
80 3.1496 26.48
85 3.346 29.9
90 3.5433 33.52
100 3.937 41.38
110 4.3307 50.07
120 4.7244 59.59
125 4.921 64.67
140 5.511 81.1