Conversion Table

Gauge Inch(Nominal) MM
8 0.1650 4.191
9 0.1500 3.810
10 0.1350 3.429
11 0.1200 3.048
12 0.1050 2.667
13 0.0900 2.286
14 0.0750 1.905
15 0.0670 1.702
16 0.0590 1.499
17 0.0563 1.430
18 0.0480 1.219
19 0.0400 1.016
20 0.0350 0.889
21 0.0320 0.813
22 0.0300 0.762
23 0.0270 0.686
24 0.0240 0.610
25 0.0200 0.508
26 0.0180 0.457
27 0.0172 6.437
28 0.0150 0.381
29 0.0141 0.358
30 0.0125 0.318
31 0.0109 0.277
32 0.0102 0.259
Weight Lb. Kg Metrics Ton Short Ton Long Ton
1 Kb 0.4539 0.0005 0.0005 0.0004465
1 Kg 2.2046 --- 0.001 0.0010 2.2046
1 Metric Ton 2204.6 1000 --- 1.1023 0.9842
1 Short Ton 2000. 907.2 0.9672 --- 0.8929
1 Long Ton 2240. 1016.0 1.0160 1.12 ---

Chemical Composition of Stainless Steel Grades

Designation Cr Ni C max Mn max P max Si max other
201 (AISI) 16-18 3.5-5.5 0.15 7.5 0.0006 1.0 N0.25 Max
202 17-19 4-6 0.15 10.0 0.0006 1.0 N0.25 Max
204 18 5.0 0.07 9 --- 0.05 N0.2
205 17 1.4 0.18 15 0.03 0.04 N0.35
               
301 16-18 6-8 0.15 2 0.045 1.0
302 17-19 8-10 0.15 2 0.045 1.0
303 17-19 8-10 0.15 2 0.20 1.0 S0.15 Min
303 SE 17-19 8-10 0.15 2 0.20 1.0 Se0.15 Min
304 18-20 8-12 0.08 2 0.045 1.0
304 L 18-20 8-12 0.03 2 0.045 1.0
305 17-19 10-13 0.12 2 0.045 1.0
308 19-21 10-12 0.08 2 0.045 1.0
309 22-24 12-15 0.20 2 0.045 1.0
309 S 22-24 12-15 0.08 2 0.045 1.0
310 24-26 19-22 0.25 2 0.045 1.5
310 S 24-26 19-22 0.08 2 0.045 1.5
311 18-20 24-26 0.25 2 0.045 3.0
312 23-26 8-11 0.25 2 0.045 3.0
316 16-18 10-14 0.08 2 0.045 1.0 Mo 2.0 3.0
316 L 16-18 10-14 0.03 2 0.045 1.0 Mo 2.0 3.0
317 18-20 11-15 0.08 2 0.045 1.0 Mo 3.0 4.0
321 17-19 9-12 0.08 2 0.045 1.0 Ti 5xC Min
329 23-30 2.5-5 0.20 2 --- --- Mo 1/1.5
330 14-16 33-36 0.25 2 0.045 0.75
347 17-19 9-13 0.08 2 0.045 1.0 Cb-Ta 10xC Min
348 17-19 9-13 0.08 2 0.045 1.0 Cb-Ta 10xC Max
Ta 0.10 Max
Co 0.10 Max
403 11.5-13 --- 0.15 1 0.04 0.5
405 11.5-14.5 --- 0.8 1 0.04 1.0 Al 0.10 0.30
409 10.5-13.5 --- 0.05 0.55 0.50 0.50 Al 0.5 Ti Q45
410 11.5-13.5 --- 0.15 1 0.04 1.0
414 11.5-13.5 1.25-2.5 0.15 1 0.04 1.0
416 12-14 --- 0.15 1.25 0.06 1.0 S 0.15 Min
420 12-14 --- 0.15MIN 1 0.04 1.0
430 14-18 --- 0.12 1 0.04 1.0
431 15-17 1.25-2.5 0.20 1 0.04 1.0
434 16-18 --- 0.12 1 0.04 1.0 Mo 1.0
439 17.75/18.75 0.5 0.07 10.60 --- 2.6
440 A 16-18 --- 0.75 1 0.04 1.0 Mo 0.75 Max
440 B 16-18 --- 0.95 1 0.04 1.0 Mo 0.75 Max
440 C 16-18 --- 1.20 1 0.04 1.0 Mo 0.75 Max
442 18-23 --- 0.2 1.5 0.04 1.0
446 23-27 --- 0.2 1.5 0.04 1.0 Mo 0.25 Max
               
501 4-6 --- 0.1 1 0.04 --- Mo 0.4 0.65
502 4-6 --- 0.1 1 0.04 --- Mo 0.4 0.65