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Carbon Steels - Heat Chemical Ranges and Limits
Carbon Steel Composition


Chemical Composition Limits, percent

AISI
or
SAE

C

Mn

P
Max.

S
Max.

1005*
1006*
1008
1010

.06 max
.08 max
.10 max
.08/.13

.35 max
.25/.40
.30/.50
.30/.60

.040
.040
.040
.040

.050
.050
.050
.050

1011*
1012
1013*
1015

.08/.13
.10/.15
.11/.16
.13/.18

.60/.90
.30/.60
.50/.80
.30/.60

.040
.040
.040
.040

.050
.050
.050
.050

1016
1017
1018
1019

.13/.18
.15/.20
.15/.20
.15/.20

.60/.90
.30/.60
.60/.90
.70/1.00

.040
.040
.040
.040

.050
.050
.050
.050

1020
1021
1022
1023

.18/.23
.18/.23
.18/.23
.20/.25

.30/.60
.60/.90
.70/1.00
.30/.60

.040
.040
.040
.040

.050
.050
.050
.050

1025
1026
1029
1030

.22/.28
.22/.28
.25/.31
.28/.34

.30/.60
.60/.90
.60/.90
.60/.90

.040
.040
.040
.040

.050
.050
.050
.050

1035
1037
1038
1039

.32/.38
.32/.38
.35/.42
.37/.44

.60/.90
.70/1.00
.60/.90
.70/1.00

.040
.040
.040
.040

.050
.050
.050
.050

1040
1042
1043
1044

.37/.44
.40/.4?
.40/.47
.43/.50

.60/.90
.60/.90
.70/1.00
.30/.60

.040
.040
.040
.040

.050
.050
.050
.050

1045
1046
1049
1050

.43/.50
.43/.50
.46/.53
.48/.55

.60/.90
.70/1.00
.60/.90
.60/.90

.040
.040
.040
.040

.050
.050
.050
.050

1053
1055
1059*
1060
1064*

.48/.55
.50/.60
.55/.65
.55/.65
.60/.70

.70/1.00
.60/.90
.50/.80
.60/.90
.50/.80

.040
.040
.040
.040
.040

.050
.050
.050
.050
.050

*SAE only

Chemical Composition Limits, percent

AISI
or
SAE

C

Mn

P
Max.

S
Max.

1065*
1069*
1070
1074*

.60/.70
.65/.75
.65/.75
.70/.80

.60/.90
.40/.70
.60/.90
.50/.80

.040
.040
.040
.040

.050
.050
.050
.050

1075*
1078
1080
1084

.70/.80
.72/.85
.75/.88
.80/.93

.40/.70
.30/.60
.60/.90
.60/.90

.040
.040
.040
.040

.050
.050
.050
.050

1085*
1086*
1090
1095

.80/.93
.80/.93
.85/.98
.90/1.03

.70/1.00
.30/.50
.60/.90
.30/.50

.040
.040
.040
.040

.050
.050
.050
.050

CARBON-MANGANESE STEELS

(Manganese Maximum Over 1.00 Per Cent)

Chemical Composition Limits, percent

AISI
or
SAE

C

Mn

P
Max.

S
Max.

1513
1518*
1522
1524

0.10/0.16
0.15/0.21
0.18/0.24
0.19/0.25

1.10/1.40
1.10/1.40
1.10/1.40
1.35/1.65

0.040
0.040
0.040
0.040

0.050
0.050
0.050
0.050

1525*
1526
1527
1533

0.23/0.29
0.22/0.29
0.22/0.29
0.30/0.37

0.80/1.10
1.10/1.40
1.20/1.50
1.10/1.40

0.040
0.040
0.040
0.040

0.050
0.050
0.050
0.050

1534
1536
1541
1544

0.30/0.37
0.30/0.37
0.36/0.44
0.40/0.47

1.20/1.50
1.20/1.50
1.35/1.65
0.80/1.10

0.040
0.040
0.040
0.040

0.050
0.050
0.050
0.050

1545
1546
1547*
1548

0.43/0.50
0.44/0.52
0.43/0.51
0.44/0.52

0.80/1.10
1.00/1.30
1.35/1.65
1.10/1.40

0.040
0.040
0.040
0.040

0.050
0.050
0.050
0.050

1551
1552
1553
1566

 0.45/0.56
0.47/0.55
0.48/0.55
0.60/0.71		 0.85/1.15
1.20/1.50
0.80/1.10
0.85/1.15		 0.040
0.040
0.040
0.040

0.050
0.050
0.050
0.050

1570
1572
1580
1590

0.65/0.75
0.65/0.76
0.75/0.88
0.85/0.98

0.80/1.10
1.00/1.30
0.80/1.10
0.80/1.10

 0.040
0.040
0.040
0.040

0.050
0.050
0.050
0.050
Note 1. Silicon When silicon ranges or limits are required, consult producer for ranges and limits.
Note 2. Copper When copper is required, 0.020 per cent minimum is generally specified.
Note 3. Lead See footnote for lead under Table 2.

*SAE only.

CARBON "H" GRADES

Chemical Composition Limits, percent

Grade
No.

C

Mn

P
Max.

S
Max.

Si

1038-H
1045-H
1522-H
1524-H

.34/.43
.42/.51
.17/.25
.18/.26

.50/1.00 .50/1.00
1.00/1.50
1.25/1.75

.040
.040
.040
.040

.050
.050
.050
.050

.15/.35
.15/.35
.15/.35
.15/.35

1526-H
1541-H

.21/.30
.35/.45

1.00/1.50
1.25/1.75

.040
.040

.050
.050

.15/.35
.15/.35

CARBON BORON "H" GRADES

(These steels can be expected to contain 0.0005 to 0.003 percent Boron)

Chemical Composition Limits, percent

Grade
No.

C

Mn

P
Max.

S
Max.

Si

15B21H
15B35H
15B37H
15B41H

.17/.24
.31/.39
.30/.39
.35/.45

.70/1.20
.70/1.20
1.00/1.50
1.25/1.75

.040
.040
.040
.040

.050
.050
.050
.050

.15/.35
.15/.35
.15/.35
.15/.35

15B48H
15B62H

.43/.53
.54/.67

1.00/1.50
1.00/1.50

.040
.040

.050
.050

.15/.35
.40/.60

Silicon. When silicon is required, the following ranges and limits are commonly used:

Standard Steel
Designations

Silicon Ranges or Limits

Up to 1015 excl.

.10 Max.

1015 to 1025 incl.

.10Max., .10/.20, .15/.35, .20/.40, or .30/.60

Over 1025

.10/.20, .15/.35, .20/.40, or .30/.60

Copper. When required, copper is specified as an added element to a standard steel.

Lead. When required, lead is specified as an added element to a standard steel and is identified by inserting letter "L" between second and third numerals.

Boron. When required, boron is specified as an added element to a standard steel and is identified by inserting letter "B" between second and third numerals

NOTE: The chemical ranges and limits shown are subject to the check analysis tolerance shown in the A.l.S.l. Manual for Alloy, Carbon and High Strength Low Alloy Steels

RESULFURIZED CARBON STEELS
HEAT CHEMICAL RANGES AND LIMITS

Chemical Composition Limits, percent

AISI
or
SAE

C

Mn

P
Max.

S
Max.

1108*
1109*
1110
1117

.08/.13
.08/.13
.08/.13
.14/.20

.50/.80
.60/.90
.30/.60
1.00/1.30

.040
.040
.040
.040

.08/.13
.08/.13
.08/.13
.08/.13

1118
1119*
1132*
1137

.14/.20
.14/.20
.27/.34
.32/.39

1.30/1.60
1.00/1.30
1.35/1.65
1.35/1.65

.040
.040
.040
.040

.08/.13
.24/.33
.08/.13
.08/.13

1139
1140
1141
1144

.35/.43
.37/.44
.37/.45
.40/.48

1.35/1.65
.70/1.00
1.35/1.65
1.35/1.65

.040
.040
.040
.040

.13/.20
.08/.13
.08/.13
.24/.33

1145*
1146
1152

.42/49
.42/49
.48/55

.70/1.00
.70/1.00
.70/1.00

.040
.040
.040

.04/.07
.08/.13
.06/.09

*SAE Only


Silicon.When silicon is required, the following ranges and limits are commonly used:

Standard Steel
Designations

Silicon Ranges or Limits

Up to 1110 incl.

10 Max.

1115 and over

.10 Max., .10/.20, .15/.35, .20/.40, or .30/.60

REPHOSPHORIZED AND RESULFURIZED
CARBON STEELS
HEAT CHEMICAL RANGES AND LIMITS

Chemical Composition Limits, percent

Grade No.

C
Max.

Mn

P

S

1212
1213
12L14

1215

.13
.13
.15

09

.70/1.00
.70/1.00
.85/1.15

75/1.05

.07/.12
.07/.12
.04/.09

04/09