The chemical compositions for some commonly used austenitic, ferritic, martensitic, precipitation hardening and duplex stainless steels are provided in the following tables. When specifying stainless steel chemistry, it is important to reference the appropriate ASTM standard and the UNS (Unified Numbering System) number associated with the specific alloy or grade. UNS numbers are internationally recognized specific chemistry requirements. If common names such as AISI numbers are referenced, the UNS number should also be used to avoid confusion.
These compositions exclude phosphorus (P), sulfur (S), and silicon (Si). Chemical composition requirements may vary with the specific product requirements so please refer to the appropriate specification.
Common Name
UNS No.
C
Cr
Ni
Mo
N
Mn
Cu
Other
201
S20100
0.15
16.0-18.0
3.5-5.5
-
0.25
5.50-7.50
-
-
301
S30100
0.15
16.0-18.0
6.0-8.0
-
0.1
2
-
-
303
S30300
0.15
17.0-19.0
8.0-10.0
0.60
-
2
-
-
304
S30400
0.08
18.0-20.0
8.0-10.5
-
0.10
2
-
-
304L
S30403
0.03
18.0 - 20.0
8.0-12.0
-
0.1
2
-
-
302HQ
S30430
0.08
17.0-19.0
8.0-10.0
-
-
2
3.0-4.0
-
305
S30500
0.12
17.0-19.0
10.5-13.0
-
-
2
-
-
321
S32100
0.08
17.0-19.0
9.0-12.0
-
0.1
2
-
Ti 5x(C+N)
347
S34700
0.08
17.0-19.0
9.0-13.0
-
-
2
-
Cb 10xC to 1.00
309S
S30908
0.08
22.0-24.0
12.0-15.0
-
-
2
-
-
310S
S31008
0.08
24.0-26.0
19.0-22.0
-
-
2
-
-
316
S31600
0.08
16.0-18.0
10.0-14.0
2.0-3.0
0.10
2
-
-
316L
S31603
0.03
16.0-18.0
10.0-14.0
2.00-3.00
0.1
2
-
-
317L
S31703
0.03
18.0-20.0
11.0-15.0
3.0-4.0
0.1
2
-
-
330
NO8330
0.08
17.0-20.0
34.0-37.0
-
-
2
-
-
317LMN
S31726
0.03
17.0-20.0
13.5-17.5
4.0-5.0
0.10-0.20
2
-
-
904L
N08904
0.02
19.0-23.0
23.0-28.0
4.00-5.00
0.1
2
1.00-2.00
-
XM-19
Nitronic 50
S21900
0.06
20.5-23.5
11.5-13.5
1.5-3.0
0.20-0.40
4.0-6.0
-
-
Alloy 218
Nitronic 60
S21800
0.10
16.0-18.0
8.0-9.0
-
0.08-0.18
7.0-9.0
-
-
Common Name
UNS No.
C
Cr
Ni
Mo
N
Mn
Cu
Other
Table 1: Austenitic Stainless Steel Chemical Compositions (Weight Percent)
Common Name
UNS No.
C
Cr
Ni
Mo
N
Mn
Cu
Other
409
S40910
0.03
10.5-11.7
0.5
-
0.03
1
-
Ti 6x(C+N) to .50
Cb 0.17
S40920
0.03
10.5-11.7
0.5
-
0.03
1
-
Ti 8x(C+N) min.
Ti 0.15-0.50
Cb 0.10
S40930
0.03
10.5-11.7
0.5
-
0.03
1
-
(Ti+Cb) [0.08+8x(C+N)] to 0.75
Ti 0.05 min.
405
S40500
0.08
11.5-14.5
0.6
-
-
1
-
Al 0.10-0.30
430
S43000
0.12
16.0-18.0
0.75
-
-
1
-
-
430F
S43020
0.12
16.0-18.0
-
0.60
-
1.25
-
-
434
S43400
0.12
16.0-18.0
-
0.75-1.25
-
1
-
-
436
S43600
0.12
16.0-18.0
-
0.75-1.25
-
1
-
Cb 5xC to 0.80
439
S43035
0.03
17.0-19.0
0.5
-
0.03
1
-
Ti [0.20+4(C+N)] to 1.10
Al .15 max.
444
S44400
0.025
17.5-19.5
1
1.75-2.50
0.035
1
-
(Ti+Cb) [0.20+4(C+N)] to 0.80 max.
26-3-3
S44660
0.03
25.0-28.0
1.0-3.5
3.0-4.0
0.04
1
-
(Ti+Cb) 0.20 to 1.00 and (Ti+Cb) 6x(C+N) min.
Common Name
UNS No.
C
Cr
Ni
Mo
N
Mn
Cu
Other
Table 2: Common Ferritic Stainless Steel Chemical Compositions (Weight Percent)
Common Name
UNS No.
C
Cr
Ni
Mo
N
Mn
Cu
Other
410
S41000
0.08-0.15
11.5-13.5
-
-
-
1
-
-
416
S41600
0.15
12.0-14.0
-
0.60
-
1.25
-
-
420
S42000
0.15 min.
12.0-14.0
-
0.5
-
1
-
-
420F
S42020
0.15 Min.
12.0-14.0
-
0.60
-
1.25
-
-
440A
S44002
0.60-0.75
16.0-18.0
-
0.75
-
1
-
-
440C
S44004
0.95-1.20
16.0-18.0
-
0.75
-
1
-
-
Common Name
UNS No.
C
Cr
Ni
Mo
N
Mn
Cu
Other
Table 3: Common Martensitic Stainless Steel Chemical Compositions (Weight Percent)
Common Name
UNS No.
C
Cr
Ni
Mo
N
Mn
Cu
Other
XM-13
S13800
0.05
12.3-13.2
7.5-8.5
2.00-2.50
0.01
0.2
-
Al 0.90-1.35
XM-12
S15500
0.07
14.0-15.5
3.5-5.5
-
-
1
2.5-4.5
Cb+Ta 0.15-0.45
XM-25
Custom 450
S45000
0.05
14.0-16.0
5.0-7.0
0.50-1.0
-
1.0
1.25-1.75
Cb 8xC Min
632
S15700
0.09
14.0-16.0
6.5-7.7
2.00-3.00
-
1
-
Al 0.75-1.50
630
S17400
0.07
15.0-17.5
3.0-5.0
-
-
1
3.0-5.0
Cb+Ta 0.15-0.45
A-286
S66286
0.08
13.5-16.0
24.0-27.0
1.0-1.5
-
0.35
-
-
631
S17700
0.09
16.0-18.0
6.5-7.7
-
-
1
-
Al 0.75-1.50
Common Name
UNS No.
C
Cr
Ni
Mo
N
Mn
Cu
Other
Table 4: Common Precipitation Hardening Stainless Steel Chemical Compositions (Weight Percent)
Common Name
UNS No.
C
Cr
Ni
Mo
N
Mn
Cu
Other
S31200
0.03
24.0-26.0
5.5-6.5
1.20-2.00
0.14-0.20
2
-
-
S31260
0.03
24.0-26.0
5.5-7.5
2.5-3.5
0.10-0.30
1
0.20-0.80
W 0.10-0.50
S32001
0.03
19.5-21.5
1.00-3.00
0.6
0.05-0.17
4.0-6.0
1
-
S32003
0.03
19.5-22.5
3.0-4.0
1.50-2.00
0.14-0.20
2
-
-
S32101
0.04
21.0-22.0
1.35-1.70
0.10-0.80
0.20-0.25
4.0-6.0
0.10-0.80
-
S32202
0.03
21.5-24.0
1.00-2.80
0.45
0.18-0.26
2
-
-
2304
S32304
0.03
21.5-24.5
3.0-5.5
0.05-0.60
0.05-0.20
2.5
0.05-0.60
-
2205
S31803
0.03
21.0-23.0
4.5-6.5
2.5-3.5
0.08-0.20
2
-
-
2205
S32205
0.03
22.0-23.0
4.5-6.5
3.0-3.5
0.14-0.20
2
-
-
S32506
0.03
24.0-26.0
5.5-7.2
3.0-3.5
0.08-0.20
1
-
W 0.05-0.30
S32520
0.03
24.0-26.0
5.5-8.0
3.0-4.0
0.20-0.35
1.5
0.50-2.00
-
255
S32550
0.04
24.0-27.0
4.5-6.5
2.9-3.9
0.10-0.25
1.5
1.50-2.50
-
2507
S32750
0.03
24.0-26.0
6.0-8.0
3.0-5.0
0.24-0.32
1.2
0.5
-
S32760
0.03
24.0-26.0
6.0-8.0
3.0-4.0
0.20-0.30
1
0.50-1.00
W 0.50-1.00
S32808
0.03
27.0-27.9
7.0-8.2
0.8-1.2
0.30-0.40
1.1
-
W 2.10-2.50
S32906
0.03
28.0-30.0
5.8-7.5
1.50-2.60
0.30-0.40
0.80-1.5
0.8
-
S32950
0.03
26.0-29.0
3.50-5.20
1.00-2.50
0.15-0.35
2
-
-
S39274
0.03
24.0-26.0
6.8-8.0
2.5-3.5
0.24-0.32
1
0.20-0.80
W 1.50-2.50
S82011
0.03
20.5-23.5
1.0-2.0
0.10-1.00
0.15-0.27
2.0-3.0
0.5
-
Common Name
UNS No.
C
Cr
Ni
Mo
N
Mn
Cu
Other
Table 5: Common Duplex Stainless Steel Chemical Compositions (Weight Percent)
Notes for All Tables: Data was extracted from ASTM specifications for plate, sheet, strip, and bar when available or from company data sheets. Chemistries are the maximum percentage, unless range or minimum is indicated.
Austenitic, Ferritic, and Duplex – ASTM A240 for plate, sheet, and strip; and ASTM A276, ASTM A479, or ASTM A582 for bar
Martensitic – ASTM A176, ASTM A240, or ASTM A959, for plate, sheet, and strip; and ASTM A276, ASTM A479, or ASTM A582 for bar
Precipitation Hardening Grades – ASTM A693 for plate, sheet, and strip; and ASTM A 484 or ASTM A564 for bar
High temperature properties
Stainless steels have good strength and good resistance to corrosion and oxidation at elevated temperatures. Stainless steels are used at temperatures up to 1700° F for 304 and 316 and up to 2000 F for the high temperature stainless grade 309(S) and up to 2100° F for 310(S). Stainless steel is used extensively in heat exchangers, super-heaters, boilers, feed water heaters, valves and main steam lines as well as aircraft and aerospace applications.
Figure 1 (below) gives a broad concept of the hot strength advantages of stainless steel in comparison to low carbon unalloyed steel. Table 1 (below) shows the short term tensile and yield strength vs temperature. Table 2 (below) shows the generally accepted temperatures for both intermittent and continuous service.
General comparison of the hot-strength characteristics of austenitic and ferritic stainless steels with those of low-carbon unalloyed steel and semi-austenitic precipitation and transformat ion-hardening steels.
With time and temperature, changes in metallurgical structure can be expected with any metal. In stainless steel, the changes can be softening, carbide precipitation, or embrittlement. Softening or loss of strength occurs in the 300 series (304, 316, etc.) stainless steels at about 1000° F and at about 900° F for the hardenable 400 (410, 420, 440) series and 800° F for the non-hardenable 400 (409, 430) series (refer to Table 1, below).
Carbide precipitation can occur in the 300 series in the temperature range 800 – 1600° F. It can be deterred by choosing a grade designed to prevent carbide precipitation i.e., 347 (Cb added) or 321 (Ti added). If carbide precipitation does occur, it can be removed by heating above 1900° and cooling quickly.
Hardenable 400 series with greater than 12% chromium as well as the non-hardenable 400 series and the duplex stainless steels are subject to embrittlement when exposed to temperature of 700 – 950° F over an extended period of time. This is sometimes call 885F embrittlement because this is the temperature at which the embrittlement is the most rapid. 885F embrittlement results in low ductility and increased hardness and tensile strengths at room temperature, but retains its desirable mechanical properties at operating temperatures.
It may seem to be illogical that the “continuous” service temperature would be higher than the “intermittent” service temperature for the 300 series grades. The answer is that intermittent service involves “thermal cycling”, which can cause the high temperature scale formed to crack and spall. This occurs because of the difference in the coefficient of expansion between the stainless metal and the scale. As a result of this scaling and cracking, there is a greater deterioration of the surface that will occur if the temperature is continuous. Therefore the suggested intermittent service temperatures are lower. This is not the case for the 400 series (both ferritic and martensitic grades). The reason for this is not known.
(in the annealed condition except for 410)
Temperature
304
& TS
ksi
316
YS
ksi
309
& TS
ksi
309S
YS
ksi
310
& TS
ksi
310S
YS
ksi
410*
TS
ksi
YS
ksi
430
TS
ksi
YS
ksi
Room Temp.
84
42
90
45
90
45
110
85
75
50
400°F
82
36
80
38
84
34
108
85
65
38
600°F
77
32
75
36
82
31
102
82
62
36
800°F
74
28
71
34
78
28
92
80
55
35
1000°F
70
26
64
30
70
26
74
70
38
28
1200°F
58
23
53
27
59
25
44
40
22
16
1400°F
34
20
35
20
41
24
---
---
10
8
1600°F
24
18
25
20
26
22
---
---
5
4
Temperature
304
& TS
ksi
316
YS
ksi
309
& TS
ksi
309S
YS
ksi
310
& TS
ksi
310S
YS
ksi
410*
TS
ksi
YS
ksi
430
TS
ksi
YS
ksi
*heat-treated by oil quenching from 1800° F and tempering at 1200° F
Material
Intermittent
Service Temperature
Continuous
Service Temperature
Austenitic
304
1600°F
(870°C)
1700°F
(925°C)
316
1600°F
(870°C)
1700°F
(925°C)
309
1800°F
(980°C)
2000°F
(1095°C)
310
1900°F
(1035°C)
2100°F
(1150°C)
Martensitic
410
1500°F
(815°C)
1300°F
(705°C)
420
1350°F
(735°C)
1150°F
(620°C)
Ferritic
430
1600°F
(870°C)
1500°F
(815°C)
Material
Intermittent
Service Temperature
Continuous
Service Temperature
Elastic Modulus in Tension GPa (ksi x 1,000)
Carbon Steel: High temperature elastic modulus in tension for some stainless steels
Common
Name
UNS
No.
20°C
(68°F)
100°C
(212°F)
200°C
(392°F)
300°C
(572°F)
400°C
(754°F)
500°C
(932°F)
Carbon steel
G10200
207 (30.0)
–
–
–
–
–
Austenitic Stainless Steels: High temperature elastic modulus in tension for some stainless steels
Common
Name
UNS
No.
20°C
(68°F)
100°C
(212°F)
200°C
(392°F)
300°C
(572°F)
400°C
(754°F)
500°C
(932°F)
304
S30400
193
(28)
193
(28)
193
(27.9)
187
(27.1)
183
(26.6)
179
(26.0)
321
S32100
193
(28)
193
(28)
193
(28)
188
(27.3)
183
(26.5)
178
(25.8)
347
S34700
200
(29)
–
194
(28.2)
190
(27.5)
185
(26.8)
180
(26.1)
310S
S31008
200
(29)
–
194
(28.2)
190
(27.5)
185
(26.8)
181
(26.2)
316L
S31603
200
(29.0)
194
(28.1)
185
(26.9)
177
(25.9)
169
(24.5)
160
(23.2)
317LMN
S31726
200
(29.0)
194
(28.1)
186
(27.0)
179
(26.0)
171
(24.8)
163
(23.6)
AL-6XN
(4)
N08367
28.3
(195)
189
(27.4)
180
(26.1)
172
(24.9)
163
(23.7)
158
(23.0)
Duplex Stainless Steels: High temperature elastic modulus in tension for some stainless steels
Common
Name
UNS
No.
20°C
(68°F)
100°C
(212°F)
200°C
(392°F)
300°C
(572°F)
400°C
(754°F)
500°C
(932°F)
S32101
200
(29.0)
194
(28.0)
186
(27.0)
180
(26.1)
-
-
2304
S32304
200
(29.0)
190
(27.6)
180
(26.1)
170
(24.7)
160
(23.2)
150
(21.8)
2205
S31803
200
(29.0)
190
(27.6)
180
(26.1)
170
(24.7)
160
(23.2)
150
(21.8)
2205
S32205
200
(29.0)
190
(27.6)
180
(26.1)
170
(24.7)
160
(23.2)
150
(21.8)
S32520
205
(29.7)
185
(26.8)
185
(26.8)
170
(24.7)
-
-
255
S32550
210
(30.5)
200
(29.9)
198
(28.7)
192
(27.8)
182
(26.4)
170
(24.7)
2507
S32750
200
(29.0)
190
(27.6)
180
(26.1)
170
(24.7)
160
(23.2)
150
(21.8)
Common
Name
UNS
No.
20°C
(68°F)
100°C
(212°F)
200°C(392°F)
300°C
(572°F)
400°C
(754°F)
500°C
(932°F)
Mean Coefficient of Thermal Expansion – Temperature 20°C (68°F) to T cm/cm/°C x 10-6 (in./in./°F x 10-6)
Carbon Steel: Mean high temperature coefficient of thermal expansion for some stainless steels
Common Name
UNS No.
20°C (68°F)
100°C (212°F)
200°C (392°F)
260°C (500°F)
300°C (572°F)
316°C (600°F)
400°C (754°F)
482°C (900°F)
500°C (932°F)
538°C (1000°F)
600°C (1112°F)
649°C (1200°F)
787°C (1450°F)
800°C (1472°F)
871°C (1600°F)
1000°C (1832°F)
Carbon steel
G10200
–
12.1 (6.70)
13.0 (7.22)
–
–
–
14
(7.78)
–
–
–
–
–
–
–
–
–
Austenitic Stainless Steels: Mean high temperature coefficient of thermal expansion for some stainless steels
Common Name
UNS No.
20°C (68°F)
100°C (212°F)
200°C (392°F)
260°C (500°F)
300°C (572°F)
316°C (600°F)
400°C (754°F)
482°C (900°F)
500°C (932°F)
538°C (1000°F)
600°C (1112°F)
649°C (1200°F)
787°C (1450°F)
800°C (1472°F)
871°C (1600°F)
1000°C (1832°F)
201
S20100
–
16.6 (9.2)
–
–
–
18.0 (10.0)
–
–
–
19.6 (10.9)
–
–
–
–
20.3 (11.3)
–
301
S30100
–
16.6 (9.2)
–
–
17.6 (9.8)
–
–
–
18.6 (10.3)
–
–
–
–
–
19.8 (11.0)
–
304L
S30403
–
16.6 (9.2)
–
–
–
–
–
–
–
–
–
–
–
–
19.8 (11.0)
–
305
S30500
–
16.6 (9.2)
–
–
–
–
–
–
–
–
–
–
–
–
19.8 (11.0)
–
321
S32100
–
16.6 (9.2)
–
–
–
–
–
–
17.1 (9.5)
–
18.9 (10.5)
–
–
–
–
20.5 (11.4)
347
S34700
–
16.6 (9.2)
–
–
–
–
–
–
–
–
18.9 (10.5)
–
–
–
–
20.5 (11.4)
309
S30900
–
15.6 (8.7)
–
–
–
–
–
–
17.6 (9.8)
–
–
–
–
–
–
19.4 (10.8)
309S
S30908
–
15.6 (8.7)
–
–
–
–
–
–
17.6 (9.8)
–
–
–
–
–
–
–
310
S31000
–
15.9 (8.8)
–
–
–
–
–
–
17.1 (9.5)
–
–
–
–
–
–
18.9 (10.5)
310S
S31008
–
15.9 (8.8)
–
–
–
–
–
–
17.1 (9.5)
–
–
–
–
–
–
–
316L
S31603
15.7 (8.72)
16.5 (9.16)
16.9 (9.38)
–
17.3 (9.61)
–
17.6 (9.78)
–
18.0 (10.0)
–
–
–
–
–
–
19.5 (10.8)
317L
S31703
–
16.5 (9.2)
–
–
–
–
–
–
18.2 (10.1)
–
–
–
–
–
–
19.5 (10.8)
317LMN
S31726
16.1 (8.94)
16.6 (9.22)
17.2 (9.55)
–
17.8 (9.89)
–
18.5 (10.3)
–
18.2 (10.1)
–
–
–
–
–
–
19.5 (10.8)
904L
N08904
15.0 (8.33)
15.3 (8.50)
15.7 (8.72)
–
16.1 (8.94)
–
16.5 (9.17)
–
16.9 (9.39)
–
–
–
–
–
–
–
–
S31254
–
16.9 (9.40)
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
N08367
–
15.3 (8.5)
–
–
–
–
–
–
16.0 (8.9)
–
–
–
–
–
–
–
Ferritic Stainless Steels: Mean high temperature coefficient of thermal expansion for some stainless steels
Common Name
UNS No.
20°C (68°F)
100°C (212°F)
200°C (392°F)
260°C (500°F)
300°C (572°F)
316°C (600°F)
400°C (754°F)
482°C (900°F)
500°C (932°F)
538°C (1000°F)
600°C (1112°F)
649°C (1200°F)
787°C (1450°F)
800°C (1472°F)
871°C (1600°F)
1000°C (1832°F)
409
S40910
–
10.52 (5.84)
–
11.11 (6.12)
–
–
–
11.88 (6.60)
–
–
–
12.34 (6.86)
–
–
–
–
–
S40920
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
S40930
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
405
S40500
–
9.7 (5.39)
10.2 (5.67)
–
–
–
–
–
11.8 (6.56)
–
–
–
–
12.7 (7.06)
–
–
430
S43000
–
10.3 (5.7)
–
–
–
–
–
–
11.2 (6.2)
–
–
–
11.9
(6.6)
–
–
–
434
S43400
–
10.4 (5.8)
–
–
–
–
–
–
–
11.4 (6.3)
–
–
–
–
–
–
439
S43035
–
10.2 (5.6)
–
–
–
–
–
–
11.6 (6.4)
–
–
–
–
12.5 (6.9)
–
13.6 (7.5)
444
S44400
–
–
10.3
(5.7)
–
–
–
–
–
–
–
–
–
–
–
–
–
26-3-3
S44660
–
9.7
(5.4)
10.2
( 5.7)
–
10.5 (5.9)
–
10.8
(6.0)
–
–
–
–
–
–
–
–
–
–
S44735
–
9.4
(5.2)
9.7
(5.4)
–
–
–
–
–
–
–
–
–
–
–
–
–
Martensitic Stainless Steels: Mean high temperature coefficient of thermal expansion for some stainless steels
Common Name
UNS No.
20°C (68°F)
100°C (212°F)
200°C (392°F)
260°C (500°F)
300°C (572°F)
316°C (600°F)
400°C (754°F)
482°C (900°F)
500°C (932°F)
538°C (1000°F)
600°C (1112°F)
649°C (1200°F)
787°C (1450°F)
800°C (1472°F)
871°C (1600°F)
1000°C (1832°F)
410
S41000
–
–
10.8 (6.0)
–
–
–
–
–
–
–
12.5 (7.0)
–
–
–
–
–
420
S42000
–
–
10.8 (6.0)
–
–
–
–
–
–
–
12.5 (7.0)
–
–
–
–
–
440A
S44002
–
–
10.8 (6.0)
–
–
–
–
–
–
–
12.2 (6.8)
–
–
–
–
–
440C
S44004
–
–
10.1 (5.6)
–
–
–
–
–
–
–
–
–
–
–
–
–
Duplex Stainless Steels: Mean high temperature coefficient of thermal expansion for some stainless steels
Common Name
UNS No.
20°C (68°F)
100°C (212°F)
200°C (392°F)
260°C (500°F)
300°C (572°F)
316°C (600°F)
400°C (754°F)
482°C (900°F)
500°C (932°F)
538°C (1000°F)
600°C (1112°F)
649°C (1200°F)
787°C (1450°F)
800°C (1472°F)
871°C (1600°F)
1000°C (1832°F)
S32101
13.0 (7.22)
13.5 (7.50)
14.0 (7.78)
2304
S32304
13.0 (7.22)
13.5 (7.50)
14.0 (7.78)
14.5 (8.06)
15.0 (8.33)
2205
S31803
13.0 (7.22)
13.5 (7.50)
14.0 (7.78)
14.5 (8.06)
15.0 (8.33)
2205
S32205
13.0 (7.22)
13.5 (7.50)
14.0 (7.78)
14.5 (8.06)
15.0 (8.33)
S32520
12.5 (6.94)
13.0 (7.22)
13.5 (7.50)
255
S32550
12.1 (6.72)
12.6 (7.00)
13.0 (7.22)
13.3 (7.39)
13.6 (7.56)
2507
S32750
13.0 (7.22)
13.5 (7.50)
14.0 (7.78)
14.5 (8.06)
15.0 (8.33)
Common Name
UNS No.
20°C (68°F)
100°C (212°F)
200°C (392°F)
260°C (500°F)
300°C (572°F)
316°C (600°F)
400°C (754°F)
482°C (900°F)
500°C (932°F)
538°C (1000°F)
600°C (1112°F)
649°C (1200°F)
787°C (1450°F)
800°C (1472°F)
871°C (1600°F)
1000°C (1832°F)
Thermal Conductivity – W/m °C (Btu in/hr ft2 °F)
Carbon Steel: High temperature thermal conductivity for some stainless steels
Common
Name
UNS No.
20°C
(68°F)
100°C
(212°F)
200°C
(392°F)
300°C
(572°F)
400°C
(754°F)
500°C
(932°F)
Carbon Steel
G10200
52 (360)
51 (354)
49 (340)
–
43 (298)
–
Austenitic Stainless Steels: High temperature thermal conductivity for some stainless steels
Common
Name
UNS No.
20°C
(68°F)
100°C
(212°F)
200°C
(392°F)
300°C
(572°F)
400°C
(754°F)
500°C
(932°F)
201
S20100
–
16.9 (117)
–
–
–
21.4 (148)
304
S30400
–
16.2 (112)
–
–
–
21.4 (148)
309S
S30908
–
16.2 (112)
–
–
–
19.4 (135)
310S
S31008
15 (104)
-
-
-
-
19 (132)
316L
S31603
14.0 (97)
14.9 (103)
16.0 (111)
17.3 (120)
18.6 (129)
19.9 (138)
317LMN
S31726
14.0 (97)
-
-
-
-
-
904L
N08904
11.5 (80)
13.1 (91)
15.1 (105)
–
–
–
–
S31254
14.0 (97)
–
–
–
–
–
–
N08367
13.7 (95)
–
–
–
–
–
Martensitic Stainless Steels: High temperature thermal conductivity for some stainless steels
Common
Name
UNS No.
20°C
(68°F)
100°C
(212°F)
200°C
(392°F)
300°C
(572°F)
400°C
(754°F)
500°C
(932°F)
440C
S44004
-
24.2 (168)
-
-
-
-
Duplex Stainless Steels: High temperature thermal conductivity for some stainless steels
Common
Name
UNS No.
20°C
(68°F)
100°C
(212°F)
200°C
(392°F)
300°C
(572°F)
400°C
(754°F)
500°C
(932°F)
S32101
15.0
(105)
16.0
(110)
17.0
(118)
18.0
(124)
-
-
2304
S32304
16.0
(110)
17.0
(118)
19.0
(132)
20.0
(138)
21.0
(147)
22.0
(153)
2205
S31803
16.0
(110)
17.0
(118)
19.0
(132)
20.0
(138)
21.0
(147)
22.0
(153)
2205
S32205
16.0
(110)
17.0
(118)
19.0
(132)
20.0
(138)
21.0
(147)
22.0
(153)
S32520
17.0
(118)
18.0
(124)
19.0
(132)
20.0
(138)
–
–
255
S32550
13.5
(94)
15.1
(105)
17.2 (119)
19.1
(133)
20.9
(145)
22.5
(156)
2507
S32750
16.0
(110)
17.0
(118)
19.0
(132)
20.0
(138)
21.0
(147)
22.0
(153)
Common
Name
UNS No.
20°C
(68°F)
100°C
(212°F)
200°C
(392°F)
300°C
(572°F)
400°C
(754°F)
500°C
(932°F)
Credit: These tables were extracted the following legacy brochures;
Nickel Institute brochure No. 11 021 High Performance Stainless Steels
International Molybdenum Association brochure Practical Guidelines for the Fabrication of Duplex Stainless Steels
Mechanical Properties for Common Stainless Steels
These mechanical properties correspond to the requirements for UNS grade or alloy designations in the ASTM specifications for plate, sheet, and strip referenced below. Material certified as meeting the requirements of a specification within one system, e.g., ASTM, will not necessarily meet the requirements for similar material in another specification system, e.g., EN or JIS.
Minimum Mechanical Properties of Several Stainless Plate, Sheet, and Strip Steels
