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Carbon Steel Chart

Compositions of Common Carbon Steel Grades
Maximum weight % unless a range or minimum is shown

1018 1020 1021 1026
C 0.15-0.20 0.18-0.23 0.18-0.23 0.22-0.28
Mn 0.60-0.90 0.30-0.60 0.60-0.90 0.60-0.90
P 0.030 0.030 0.030 0.030
S 0.050 0.050 0.050 0.050
Si (1) (1) (1) (1)
Ni - - - -
Cr - - - -
Mo - - - -
V - - - -
Cu - - - -
Other - - - -
Source SAE J403 MAY94 SAE J403 MAY94 SAE J403 MAY94 SAE J403 MAY94


1029 1030 1035 1040
C 0.25-0.31 0.28-0.34 0.32-0.38 0.37-0.44
Mn 0.60-0.90 0.60-0.90 0.60-0.90 0.60-0.90
P 0.030 0.030 0.030 0.030
S 0.050 0.050 0.050 0.050
Si (1) (1) (1) (1)
Ni - - - -
Cr - - - -
Mo - - - -
V - - - -
Cu - - - -
Other - - - -
Source SAE J403 MAY94 SAE J403 MAY94 SAE J403 MAY94 SAE J403 MAY94


1045 1050 1055 1060
C 0.43-0.50 0.48-0.55 0.50-0.60 0.55-0.65
Mn 0.60-0.90 0.60-0.90 0.60-0.90 0.60-0.90
P 0.030 0.030 0.030 0.030
S 0.050 0.050 0.050 0.050
Si (1) (1) (1) (1)
Ni - - - -
Cr - - - -
Mo - - - -
V - - - -
Cu - - - -
Other - - - -
Source SAE J403 MAY94 SAE J403 MAY94 SAE J403 MAY94 SAE J403 MAY94


1065 1070 1080 1117
C 0.60-0.70 0.65-0.75 0.75-0.88 0.14-0.20
Mn 0.60-0.90 0.60-0.90 0.60-0.90 1.00-1.30
P 0.030 0.030 0.030 0.030
S 0.050 0.050 0.050 0.08-0.13
Si (1) (1) (1) (1)
Ni - - - -
Cr - - - -
Mo - - - -
V - - - -
Cu - - - -
Other - - - -
Source SAE J403 MAY94 SAE J403 MAY94 SAE J403 MAY94 SAE J403 MAY94


1141 1146 ABS Grade 2 A-105
C 0.37-0.45 0.42-0.49 0.35 0.35
Mn 1.35-1.65 0.70-1.00 1.35 0.60-1.05
P 0.030 0.030 0.050 0.035
S 0.08-0.13 0.08-0.13 0.050 0.040
Si (1) (1) - 0.10-0.35
Ni - - - 0.40
Cr - - - 0.30
Mo - - - 0.12
V - - - 0.05
Cu - - - 0.40
Other - - - Cb, 0.02 max.; Cu+Ni+Mo, 1.00 max; Cr+Mo, 0.32 max.
Source SAE J403 MAY94 SAE J403 MAY94 ABS, Part 2, 1997 ASTM A105-96


15B22 MOD 1545 A350 LF2
C 0.20-0.25 0.42-0.53 0.35
Mn 0.80-1.10 1.00-1.25 0.60-1.35
P 0.040 0.045 0.035
S 0.050 0.20-0.30 0.040
Si 0.15-0.35 0.10 0.15-0.30
Ni - 0.25 0.40
Cr - 0.25 0.30
Mo - 0.10 0.12
V - - 0.05
Cu - - 0.40
Other B, 0.0005-0.0030 - Cb, 0.02 max.; Cu+Ni+Cr+V+Mo, 1.00 max; Cr+Mo, 0.32 max.
Source CAT 1E0621-15 Custom grade ASTM A350-97

(1) Not required by specification but may be specified

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