Stainless Steels - Specifications

Stainless steel is essentially a low carbon steel which contains chromium at 10% or more by weight. It is this addition of chromium that gives the steel its unique stainless, corrosion resisting properties. The corrosion resistance and other useful properties of the steel are enhanced by increased chromium content and the addition of other elements such as molybdenum, nickel and nitrogen.

Grades - Chemical Composition and Equivalent Standards

Classification Specification Chemical Composition other
JIS AISI C Si Mn P S Ni Cr Mo Cu N
Martensitic Grades SUS403 403 Max.0.15 Max.0.50 Max.1.00 Max.0.040 Max.0.030 (1) 11.50~13.00 - - - -
SUS410 410 Max.0.15 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 11.50~13.50 - - - -
SUS410J1 - 0.08~0.18 Max.0.60 Max.1.00 Max.0.040 Max.0.030 (1) 11.50~14.00 0.30~0.60 - - -
SUS410F2 - Max.0.15 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 11.50~13.50 - - - Pb 0.05˜0.30
SUS416 416 Max.0.15 Max.1.00 Max.1.25 Max.0.060 Min.0.15 (1) 12.00~14.00 (2) - - -
SUS420J1 420 0.16~0.25 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 12.00~14.00 - - - -
SUS420J2 420 0.26~0.40 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 12.00~14.00 - - - -
SUS420F 420F 0.26~0.40 Max.1.00 Max.1.25 Max.0.060 Min.0.15 (1) 12.00~14.00 (2) - - -
SUS420F2 - 0.26~0.40 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 12.00~14.00 - - - Pb 0.05~0.30
SUS431 431 Max.0.20 Max.1.00 Max.1.00 Max.0.040 Max.0.030 1.25~2.50 15.00~17.00 - - - -
SUS440A 440A 0.60~0.75 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 16.00~18.00 (3) - - -
SUS440B 440B 0.75~0.95 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 16.00~18.00 (3) - - -
SUS440C 440C 0.95~1.20 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 16.00~18.00 (3) - - -
SUS440F S44020 0.95~1.20 Max.1.00 Max.1.25 Max.0.060 Min.0.15 (1) 16.00~18.00 (3) - - -
Ferritic Grades SUS405 405 Max.0.08 Max.1.00 Max.1.00 Max.0.040 Max.0.030 - 11.50~14.50 - - - Al 0.10~0.30
SUS410L - Max.0.03 Max.1.00 Max.1.00 Max.0.040 Max.0.030 - 11.00~13.50 - - - -
SUS430 430 Max.0.12 Max.0.75 Max.1.00 Max.0.040 Max.0.030 - 16.00~18.00 - - - -
SUS430F 430F Max.0.12 Max.1.00 Max.1.25 Max.0.060 Min.0.15 - 16.00~18.00 (2) - - -
SUS434 434 Max.0.12 Max.1.00 Max.1.00 Max.0.040 Max.0.030 - 16.00~18.00 0.75~1.25 - - -
SUS447J1 - Max.0.01 Max.0.40 Max.0.40 Max.0.030 Max.0.020 - 28.50~32.00 1.50~2.50 - Max.0.015 -
SUSXM27 - Max.0.01 Max.0.40 Max.0.40 Max.0.030 Max.0.020 - 25.00~27.50 0.75~1.50 - Max.0.015 -
Austenitic Ferritic Grades SUS329J1 329 Max.0.08 Max.1.00 Max.1.50 Max.0.040 Max.0.030 3.00~6.00 23.00~28.00 1.00~3.00 - - -
SUS329J3L S31803 Max.0.03 Max.1.00 Max.2.00 Max.0.040 Max.0.030 4.50~6.50 21.00~24.00 2.50~3.50 - 0.08~0.20 -
SUS329J4L S31260 Max.0.03 Max.1.00 Max.1.50 Max.0.040 Max.0.030 5.50~7.50 24.00~26.00 2.50~3.50 - 0.08~0.30 -
Austenitic Grades SUS201 201 Max.0.15 Max.1.00 5.50~7.50 Max.0.060 Max.0.030 3.50~5.50 16.00~18.00 - - 0.25?? -
SUS202 202 Max.0.15 Max.1.00 7.50~10.00 Max.0.060 Max.0.030 4.00~6.00 17.00~19.00 - - Max.0.25 -
SUS301 301 Max.0.15 Max.1.00 Max.2.00 Max.0.045 Max.0.030 6.00~8.00 16.00~18.00 - - - -
SUS302 302 Max.0.15 Max.1.00 Max.2.00 Max.0.045 Max.0.030 8.00~10.00 17.00~19.00 - - - -
SUS303 303 Max.0.15 Max.1.00 Max.2.00 Max.0.200 Min.0.15 8.00~10.00 17.00~19.00 (2) - - -
SUS303Se 303Se Max.0.15 Max.1.00 Max.2.00 Max.0.200 Max.0.060 8.00~10.00 17.00~19.00 - - - Se Min.0.15
SUS303Cu - Max.0.15 Max.1.00 Max.3.00 Max.0.200 Min.0.15 8.00~10.00 17.00~19.00 (2) 1.50~3.50 - -
SUS304 304 Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 8.00~10.50 18.00~20.00 - - - -
SUS304L 304L Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 9.00~13.00 18.00~20.00 - - - -
SUS304N1 304N Max.0.08 Max.1.00 Max.2.50 Max.0.045 Max.0.030 7.00~10.50 18.00~20.00 - - 0.10~0.25 -
SUS304N2 - Max.0.08 Max.1.00 Max.2.50 Max.0.045 Max.0.030 7.50~10.50 18.00~20.00 - - 0.15~0.30 Nb Max.0.15
SUS304LN 304LN Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 8.50~11.50 17.00~19.00 - - 0.12~0.22 -
SUS304J3 - Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 8.00~10.50 17.00~19.00 - 1.00~3.00 - -
SUS305 305 Max.0.12 Max.1.00 Max.2.00 Max.0.045 Max.0.030 10.50~13.00 17.00~19.00 - - - -
SUS309S 309S Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 12.00~15.00 22.00~24.00 - - - -
SUS310S 310S Max.0.08 Max.1.50 Max.2.00 Max.0.045 Max.0.030 19.00~22.00 24.00~26.00 - - - -
SUS316 316 Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 10.00~14.00 16.00~18.00 2.00~3.00 - - -
SUS316L 316L Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 12.00~15.00 16.00~18.00 2.00~3.00 - - -
SUS316N 316N Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 10.00~14.00 16.00~18.00 2.00~3.00 - 0.10~0.22 -
SUS316LN 316LN Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 10.50~14.50 16.50~18.50 2.00~3.00 - 0.12~0.22 -
SUS316Ti - Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 10.00~14.00 16.00~18.00 2.00~3.00 - - Ti Min.5xC%
SUS316J1 - Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 10.00~14.00 17.00~19.00 1.20~2.75 1.00~2.50 - -
SUS316J1L - Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 12.00~16.00 17.00~19.00 1.20~2.75 1.00~2.50 - -
SUS316F - Max.0.08 Max.1.00 Max.2.00 Max.0.045 Min.0.10 10.00~14.00 16.00~18.00 2.00~3.00 - - -
SUS317 317 Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 11.00~15.00 18.00~20.00 3.00~4.00 - - -
SUS317L 317L Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 11.00~15.00 18.00~20.00 3.00~4.00 - - -
SUS317LN - Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 11.00~15.00 18.00~20.00 3.00~4.00 - 0.10~0.22 -
SUS317J1 - Max.0.04 Max.1.00 Max.2.50 Max.0.045 Max.0.030 15.00~17.00 16.00~19.00 4.00~6.00 - - -
SUS836L - Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 24.00~26.00 19.00~24.00 5.00~7.00 - Max.0.25 -
SUS890L - Max.0.02 Max.1.00 Max.2.00 Max.0.045 Max.0.030 23.00~28.00 19.00~23.00 4.00~5.00 1.00~2.00 - -
SUS321 321 Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 9.00~13.00 17.00~19.00 - - - Ti Min.5xC%
SUS347 347 Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 9.00~13.00 17.00~19.00 - - - Nb Min.10xC%
SUSXM7 304Cu Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 8.50~10.50 17.00~19.00 - 3.00~4.00 - -
SUSXM15J1 - Max.0.08 3.00~5.00 Max.2.00 Max.0.045 Max.0.030 11.50~15.00 15.00~20.00 - - - -
Precipitation Hardening Grades SUS630 S17400 Max.0.07 Max.1.00 Max.1.00 Max.0.040 Max.0.030 3.00~5.00 15.00~17.50 - 3.00~5.00 - Nb 0.15~0.45
SUS631 S17700 Max.0.09 Max.1.00 Max.1.00 Max.0.040 Max.0.030 6.50~7.75 16.00~18.00 - - - Al 0.75~1.50



* SUS329J1 denotes austenitic and ferritic stainless steel. Note:
(1) May contain at most 0.6% Ni.
(2) May have at most 0.6% Mo added.
(3) May have at most 0.75% Mo added.
Remarks:
1) Ferritic SUS447J1 and SUSXM27 may contain at most 0.60% Ni.
  SUS447J1 and SUSXM27 may contain at most 0.50% Ni, 0.20% Cu, and 0.50% Ni + Cu; and any alloy element other than listed can be added if required.
2) With SUSXM15J1 any alloy element other than listed can be added if required.

Benefits of Stainless Steel

• Corrosion Resistance • Fire And Heat Resistance
• Hygiene • Aesthetic Appearance
• Strength-To-Weight Advantage • Impact Resistance
• Lower Total Life Cycle Cost • 100%Recyclable

Conversion of Inch to millimeter and their corresponding weight

Inch
Inch (Dec)
Size (mm)
Weight kgs/ meter
1/8"
0.125
3.175
0.063
3/16"
0.188
4.763
0.141
1/4"
0.250
6.350
0.251
5/16"
0.313
7.938
0.393
3/8"
0.375
9.525
0.565
7/16"
0.438
11.113
0.770
1/2"
0.500
12.700
1.005
5/8"
0.625
15.875
1.571
3/4"
0.750
19.050
2.262
7/8"
0.875
22.225
3.078
1"
1.000
25.400
4.021
1-1/8"
1.125
28.575
5.089
1-3/16"    1.188
30.163
5.670
3-3/16"    3.188
1-1/4"
1.250
31.750
6.282
1-5/16"    1.313
33.338
6.926
3-5/16"    3.313
1-3/8"
1.375
34.925
7.602
1-7/16"    1.438
36.513
8.308
3-7/16"    3.438
1-1/2"
1.500
38.100
9.046
1-5/8"
1.625
41.275
10.6171
1-3/4"
1.750
44.450
12.313
1-7/8"
1.875
47.625
14.135
2"
2.000
50.800
16.083
2-1/8"
2.125
53.975
18.156
2-3/16"    2.188
55.563
19.239
4-3/16"    4.188
2-1/4"
2.250
57.150
20.354
2-5/16"    2.313
58.738
21.501
4-5/16"    4.313
2-3/8"
2.375
60.325
22.679
2-7/16"    2.438
61.913
23.888
4-7/16"    4.438
2-1/2"
2.500
63.500
25.129
2-5/8"
2.625
66.675
27.705
2-3/4"
2.750
69.850
30.406
2-7/8"
2.875
73.025
33.233
3"
3.000
76.200
36.186
3-1/8"
3.125
79.375
39.264
80.963
40.850
5-3/16"    5.188
131.763 
3-1/4"
3.250
82.550
42.468
84.138
44.117
5-5/16"    5.313
134.938 
3-3/8"
3.375
85.725
45.798
87.313
47.509
5-7/16"    5.438
138.113 
3-1/2"
3.500
88.900
49.253
3-5/8"
3.625
92.075
52.834
3-3/4"
3.750
95.250
56.540
3-7/8"
3.875
98.425
60.372
4"
4.000
101.600  
64.330
4-1/8"
4.125
104.775
 68.414
106.363
70.503
-
-
4-1/4"
4.250
107.950 
 72.623
109.538 
 74.774
-
-
4-3/8"
4.375
111.125 
 76.958
112.713 
 79.172
-
-
4-1/2"
4.500
114.300 
 81.418
4-5/8"
4.625
117.475 
 86.004
4-3/4"
4.750
120.650 
 90.716
4-7/8"
4.875
123.825 
 95.553
5"
5.000
127.000 
 100.516
5-1/8"
5.125
130.175 
 105.605
 108.196
-
-
-
5-1/4"
5.250
133.350 
 110.819
 113.473
-
-
-
5-3/8"
5.375
136.525 
 116.159
 118.876
-
-
-
5-1/2"
5.500
139.700 
 121.624
5-5/8"
5.625
142.875 
 127.215
5-3/4"
5.750
146.050 
 132.932
5-7/8"
5.875
149.225 
 138.775
6"
6.000
152.400 
 144.743

Tolerance Chart for SS Round Bars as per ISO

Size Range (mm) h8 h9 h10 h11 h12 h13 K12/K13
Upto 6 -0.018 -0.030 -0.048 -0.075 -0.120 -0.180 -
Over 6 upto 10 -0.022 -0.036 -0.058 -0.090 -0.150 -0.220 -
Over 10 upto 18 -0.027 -0.043 -0.070 -0.110 -0.180 -0.270 -
Over 18 upto 30 -0.033 -0.052 -0.084 -0.130 -0.210 -0.330 +0.10/+0.15
Over 30 upto 50 -0.039 -0.062 -0.100 -0.160 -0.250 -0.390 +0.15/+0.20
Over 50 upto 80 -0.046 -0.074 -0.120 -0.190 -0.300 -0.460 +0.20/+0.25
Over 80 upto 120 -0.054 -0.087 -0.140 -0.220 -0.350 -0.540 +0.25/+0.30

Tolerance Chart For SS Round Bars as per ASTM A 484

Cold Finished Round Bars

Size Range in Inch Tolerance
1/16” to less than 5/16” +/- 0.001”
5/16” to less than 1/2” +/- 0.0015”
1/2” to less than 1” +/- 0.002”
1” to less than 1-1/2” +/- 0.0025”
1-1/2” to less than 4” +/- 0.003”

Cold Finished Hexagon & Square Bars

Size Range in Inch
Tolerance
1/16” to less than 5/16”
+/- 0.002”
5/16” to less than 1/2”
+/- 0.003”
1/2” to less than 1”
+/- 0.004”
1” to less than 2”
+/- 0.006”
2” to less than 3”
+/- 0.008”
3" and over
+/- 0.010”

Hardness Conversions Chart

Brinnel Hardness HB
Vickers Hardness HV
Rockwell Hardness HRC
Rockwell Hardness HRB
Tensile Strength ksi
321
339
34
108
158
311
328
33
108
154
302
319
32
107
150
293
309
31
106
146
285
301
30
105
142
277
292
29
104
138
269
284
28
104
135
262
276
27
103
131
255
269
25
102
125
248
261
24
101
121
241
253
23
100
119
235
247
22
99
117
229
241
21
98
113
223
234
-
97
110
217
228
-
96
107
212
222
-
95
102
207
218
-
95
100
202
212
-
94
98
197
207
-
93
96
192
202
-
92
94
187
196
-
91
90
183
192
-
90
89
179
188
-
89
87
174
182
-
88
84
170
178
-
87
82
166
175
-
86
80
163
171
-
85
78
159
167
-
84
77
156
163
-
83
76
153
160
-
82
75
149
156
-
81
74
146
153
-
80
72
143
150
-
79
71
140
147
-
78
70
137
143
-
76
67
134
140
-
75
66
131
137
-
74
65
128
134
-
73
64
126
132
-
72
63
124
129
-
71
62
121
127
-
70
60
118
124
-
69
59
116
122
-
68
58
114
119
-
67
57
111
117
-
66
56