CHEMICAL COMPOSITION ( IN PERCENTAGE )
Grade C (Max) Mn (Max) P (Max) S (Max) Si (Max) Cr Ni Mo Nitrogen (Max) Cu/ Others
301 0.15 2.00 0.045 0.030 1.00 16.00 - 18.00 6.00 - 8.00 - 0.10 -
304 0.08 2.00 0.045 0.030 0.75 18.00 - 20.00 8.00- 10.50 - 0.10 -
304L 0.030 2.00 0.045 0.030 0.75 18.00 - 20.00 8.00- 12.00 - 0.10 -
310S 0.08 2.00 0.045 0.030 1.50 24.00- 26.00 19.00 - 22.00 - - -
316 0.08 2.00 0.045 0.030 0.75 16.00 - 18.00 10.00 - 14.00 2.00 - 3.00 0.10 -
316L 0.030 2.00 0.045 0.030 0.75 16.00 - 18.00 10.00 - 14.00 2.00 - 3.00 0.10 -
317 0.08 2.00 0.045 0.030 0.75 18.00 - 20.00 11.00 - 14.00 3.00 - 4.00 0.10 -
317L 0.030 2.00 0.045 0.030 0.75 18.00 - 20.00 11.00 - 15.00 3.00 - 4.00 0.10 -
321 0.08 2.00 0.045 0.030 0.75 17.00 - 19.00 9.00 - 12.00 - 0.10 Ti5 ( C + N ) Min or 0.70 max
347 0.08 2.00 0.045 0.030 0.75 17.00 - 19.00 9.00 - 13.00 - - Cb= 10x ( C Min ) or 1.00 Max
409 0.08 1.00 0.040 0.010 1.00 10.50 - 11.75 0.50 - - Ti= 6x (C+ N ) Min or 0.70 Max
409M 0.03 0.81.2 0.030 0.030 0.40.75 11.00- 12.00 1.5 max. - - Ti= 6x (C) Min or 0.70 Max
410S 0.08 1.00 0.040 0.030 1.00 11.50- 13.50 0.60 - - -
410 0.15 1.00 0.040 0.030 1.00 11.50- 13.50 0.75 - - -
420 0.35 0.50 0.035 0.015 0.50 12.00 - 13.00 0.20.3 - - -
430 0.12 1.00 0.040 0.030 1.00 16.00 - 18.00 0.75 - - -
JSL AUS 0.08 7.08.0 0.070 0.030 0.75 15.50 - 16.50 4.25 - 4.75 - - 0.9 - 1.10
JS- 203 0.08 9.2510.25 0.070 0.030 0.75 14.25 - 15.25 2.25 - 2.75 - - 1.60- 2.0
301M 0.10 4.55.5 0.060 0.030 0.75 14.50 - 15.50 6.0 - 7.0 - - 1.70- 1.90
* Thickness of 1.27mm & below will have elongation of 20% min.
Chemical Analysis of ASTM A691 Material

  1CR 1-1/4CR 2-1/4 CR 5 CR 9 CR 91
C 0.05-0.17 0.05-0.17 0.05-0.15 0.15 0.15 0.08-0.12
Mn 0.40-0.65 0.40-0.65 0.30-0.60 0.30-0.60 0.30-0.60 0.30-0.60
P 0.025 0.025 0.025 0.025 0.025 0.020
S 0.025 0.025 0.025 0.025 0.025 0.010
Si 0.15-0.40 0.50-0.80 0.50 0.50 1.00 0.20-0.50
Cr 0.80-1.15 1.00-1.50 2.00-2.50 4.00-6.00 8.00-10.00 8.00-9.50
Mo 0.45-0.60 0.45-0.65 0.90-1.10 0.45-0.65 0.90-1.10 0.85-1.05
V – – – – 0.04 0.18-0.25