CHEMICAL REQUIREMENTS

Grade
UNS
DesignationA
 
Carbon
maxB
Manganese
max
Phosphorus
max
Sulfur
max
Silcon
max
Chromium
Nickel
Molybdenum
Titanium
Columbium
Plus
Tantalum
Nitrogen
max
TP304L
S30403
0.030
2.00
0.045
0.030
1.00
18.00-20.00
 8.00-13.00
0.10
TP316L
S31603
0.030
2.00
0.045
0.030
1.00
16.00-18.00
10.00-15.00
2.00-3.00
0.10
TP317L
S31703
0.030
2.00
0.045
0.030
1.00
18.00-20.00
11.00-14.00
3.00-4.00
0.10
TP321
S32100
0.080
2.00
0.045
0.030
1.00
17.00-19.00
 9.00-12.00
C
TP347
S34700
0.080
2.00
0.045
0.030
1.00
17.00-19.00
 9.00-13.00
D

A New designation established in accordance with ASTM E527 and SAE J1086, Recommended Practice for Numbering Metals and Alloys (UNS).

B The carbon analysis shall be reported to the nearest 0.01 percent except for the low carbon (0.030) types, that shall be reported to the nearest 0.001 percent.

C The titanium content shall be not less than five times the carbon content and not more than 0.70 percent.

D The columbium plus tantalum content shall be not less than ten times the carbon content and not more than 1.10 percent.

STAINLESS STEEL
CHEMICAL REQUIREMENTS

Grade
UNS
DesignationA
Composition %
Carbon
maxB
Manganese
maxB
Phosphorus
max
Sulfer
max
Silicon
Nickel
Chromium
Molybdenum
Titanium
Columbium
plus
Tantalum
Tantalum
max
NitrogenC
Vanadium
Copper
Cenum
TP304
S30400
0.08
2.00
0.040
0.030
0.75 max
8.00-11.0
18.0-20.0
TP304H
S30409
0.04-0.10
2.00
0.040
0.030
0.75 max
8.00-11.0
18.0-20.0
TP304L
S30403
0.035D
2.00
0.040
0.030
0.75 max
8.00-13.0
18.0-20.0
TP304N
S30451
0.08
2.00
0.040
0.030
0.75 max
8.00-11.0
18.0-20.0
0.10-0.16
TP304LN
S30453
0.035
2.00
0.040
0.030
0.75 max
8.00-11.0
18.0-20.0
0.10-0.16
TP309
S30900
0.15
2.00
0.040
0.030
0.75 max
12.0-15.0
22.0-24.0
TP309Cb
S30904
0.08
2.00
0.045
0.030
0.75 max
12.0-16.0
22.0-24.0
0.75 max
10 x C
Min
1.110
max
0.75 max
TP 309S
S30908
0.08
2.00
0.045
0.030
0.75 max
12.0-15.0
22.0-24.0
0.75 max
0.75 max
TP310
S31000
0.15
2.00
0.040
0.030
0.75 max
19.0-22.0
24.0-26.0
TP310Cb
S31040
0.08
2.00
0.045
0.030
0.75 max
19.0-22.0
24.0-26.0
0.75 max
10 x C
min.
1.10
max
0.75 max
TP310S
S31008
0.08
2.00
0.045
0.030
0.75 max
19.0-22.0
24.0-26.0
0.75 max
0.75 max
TP316
S31600
0.08
2.00
0.040
0.030
0.75 max
11.0-14.0D
16.0-18.0
2.00-3.00
TP316H
S31609
0.04-0.10
2.00
0.040
0.030
0.75 max
11.0-14.0D
16.0-18.0
2.00-3.00
TP316L
S31603
0.035E
2.00
0.040
0.030
0.75 max
10.0-15.0
16.0-18.0
2.00-3.00
TP316N
S31651
0.08
2.00
0.040
0.030
0.75 max
11.0-14.0D
16.0-18.0
2.00-3.00
0.10-0.16
TP316LN
S31653
0.035
2.00
0.040
0.030
0.75 max
11.0-14.0D
16.0-18.0
2.00-3.00
0.10-0.16
TP317
S31700
0.08
2.00
0.040
0.030
0.75 max
11.0-14.0
18.0-20.0
3.00-4.00
TP317L
S31703
0.035
2.00
0.040
0.030
0.75 max
11.0-15.0
18.0-20.0
3.00-4.00
TP321
S32100
0.08
2.00
0.040
0.030
0.75 max
9.00-13.0
17.0-20.0
F
TP321H
S32109
0.04-0.10
2.00
0.040
0.030
0.75 max
9.00-13.0
17.0-20.0
G

STAINLESS STEEL
CHEMICAL REQUIREMENTS

Grade
UNS
DesignationA
Composition %
Carbon
maxB
Manganese
maxB
Phosphorus
max
Sulfur
max
Silicon
Nickel
Chromium
Molybdenum
Titanium
Columbium
plus
Tantalum
Tantalum
max
NitrogenC
Vanadium
Copper
Cenum
TP347
S34700
0.08
2.00
0.040
0.030
0.75 max
9.00-13.0
17.0-20.0
H
TP347H
S34709
0.04-0.10
2.00
0.040
0.030
0.75 max
9.00-13.0
17.0-20.0
I
TP348
S34800
0.08
2.00
0.040
0.030
0.75 max
9.00-13.0
17.0-20.0
H
0.10
TP348H
S34809
0.04-0.10
2.00
0.040
0.030
0.75 max
9.00-13.0
17.0-20.0
I
0.10
TPXM-10
S21900
0.08
8.00-10.00
0.040
0.030
1.00 max
5.50-7.50
19.0-21.5
0.15-0.40
TPXM-11
S21903
0.04
8.00-10.00
0.040
0.030
1.00 max
5.50-7.50
19.0-21.5
0.15-0.40
TPXM-15
S38100
0.08
2.00
0.030
0.030
1.50-2.50
17.5-18.5
17.0-19.0
TPXM-19
S20910
0.060
4.00-6.00
0.040
0.030
1.00 max
11.5-13.5
20.5-23.5
1.50-3.00
0.10-0.30
0.20-0.40
0.10-0.30
TPXM-29
S24000
0.080
11.5-14.5
0.060
0.030
1.00 max
2.25-3.75
17.0-19.0
0.20-0.40
S31254
0.020
1.00
0.030
0.010
0.80 max
17.5-18.5
19.5-20.5
6.00-6.50
0.18-0.22
0.50-1.00
S30815
0.05-0.10
0.80
0.040
0.030
1.40-2.00
10.0-12.0
20.0-22.0
0.14-0.20
0.03-0.08
S01815
0.018
2.00
0.02
0.02
3.7-4.3
14.0-15.5
17.0-18.5
0.20 max
0.50 max
S31725
0.03
2.00
0.040J
0.030
0.75
13.5-17.5
18.0-20.0
4.0-5.0
0.10 max
0.75 max
S31726
0.03
2.00
0.040J
0.030
0.75
13.5-17.5
17.0-20.0
4.0-5.0
0.10-0.20
0.75 max

A New designation established in accordance with ASTM E-527 and SAE J1086. Practice for Numbering Metals and Alloys (UNS).

B Maximum, unless otherwise indicated.

C The method of analysis for nitrogen shall be a matter of agreement between the purchaser and manufacturer.

D For welded TP316, TP316N, TP316LN, and TP316H pipe, the nickel range shall be 10.0-14.0 percent.

E For small diameter or thin walls or both, where many drawing passes are required, a carbon maximum of 0.040 percent is necessary in grades TP304L and TP316L. Small outside diameter tubes are defined as those less than 0.500 inch (12.7 mm) in outside diameter and light wall tubes as those less than 0.049 inch (1.20 mm) in average wall thickness (0.044 inch [1.10 mm] in minimum wall thickness).

F The titanium content shall be not less than five times the carbon content and not more than 0.70 percent.

G The titanium content shall be not less than four times the carbon content and not more than 0.60 percent.

H The columbium plus tantalum content shall be not less than ten times the carbon content and not more than 1.00 percent.

I The columbium plus tantalum content shall be not less than eight times the carbon content and not more than 1.0 percent.

J For welded pipe, the phosphorus maximum shall be 0.045 percent.