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Technical Information
 
Theoritic Weight of Stainless Steel Round Bars
Size (mm)
Weight kgs/ meter
Size (mm)
Weight kgs/ meter
2
0.025
16
1.595
3
0.056
17
1.801
4
0.100
18
2.019
5
0.156
19
2.250
6
0.224
20
2.493
7
0.305
21
2.748
8
0.399
22
3.016
9
0.505
23
3.297
10
0.623
24
3.590
11
0.754
25
3.895
12
0.897
26
4.213
13
1.053
28
4.886
14
1.221
30
5.609
15
1.402
32
6.382
34
7.204
85
45.026
35
7.634
90
50.479
36
8.077
95
56.244
38
8.999
100
62.320
40
9.971
105
68.708
45
12.620
110
75.407
50
15.580
115
82.418
55
18.852
120
89.741
58
20.964
125
97.375
60
22.435
130
105.321
65
26.330
135
113.578
70
30.537
140
122.147
75
35.055
145
131.028
80
39.885
150
140.220
 
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
 
Theoritic Weight of Stainless Steel Hex & Square Bars
Size (mm)
Weight (Hex) kg/ meter
Weight (Square) kg/ meter

5

0.172

 0.197

6

0.248

 0.283

8

0.441

 0.504

10

0.689

 0.787

12

0.992

1.134

14

1.350

1.543

15

1.550

1.771

16

1.763

 2.015

17

1.991

2.275

18

2.232

2.551

19

2.487

2.842

20

 2.755

3.149

21

3.038

3.472

22

3.334

3.810

24

 3.967

4.534

25

 4.305

4.920

27

 5.021

5.739

28

 5.400

6.172

30

 6.199

 7.085

32

 7.053

 8.061

34

7.963

 9.100

35

8.438

9.643

36

8.927

 10.202

38

9.946

11.367

40

11.021

12.595

42

12.150

13.886

45

13.948

 15.941

50

17.220

19.680

 
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
 
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