COLD FINISHED CARBON STEEL BARS

COMPOSITION OF COLD FINISHED CARBON STEEL BARS
Grade
Relative
Machinability,
Based on
1212 as 100%
Carbon
%
Magnesium
%
Phosphorous
%
Sulfur
%
1018
78
0.15-0.20
0.60-0.90
0.040 Max
0.050 Max
1045
57
0.43-0.50
0.60-0.90
0.040 Max
0.050 Max
1117
91
0.14-0.20
1.00-1.30
0.040 Max
0.08-0.13
1141
70
0.37-0.45
1.35-1.65
0.040 Max
0.08-0.13
1144
76
0.40-0.48
1.35-1.65
0.040 Max
0.24-0.33
1215
136
0.09 Max
0.75-1.05
0.04-0.09
0.26-0.35
12L14*
180
0.15 Max
0.85-1.15
0.04-0.09
0.26-0.35

*Lead 0.15-0.35%

CARBON:
Hardening element, strength, and hardness increase with increased carbon content.
MANGANESE:
Contributes to strength and hardness, decreases weldability.
PHOSPHORUS:
Contributes to strength and hardness, decreases ductility (ability to withstand deformation without rupture).
SULFUR:
In free machining steels (1215, 12L14), the addition of sulphur improves machin-ability, decreases weldability.
LEAD:Improves machinability