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Chemical Composition



Special Grades offered by Gyscoal Alloys Limited

Grade : AISI 201 (0.5% Nickel)
Grade %C %Mn %P %S %Si %Cr %Ni %Cu
Min 0.10 - - - 0.30 13.00 0.30 1.60
  to       to to to to
Max 0.12 10.00 0.060 0.030 0.60 15.00 0.50 1.80
Grade : AISI 201 (1% Nickel)
Grade %C %Mn %P %S %Si %Cr %Ni %Cu
Min 0.08 - - - 0.30 13.00 0.80 1.60
  to       to to to to
Max 0.12 10.0 0.60 0.03 0.60 15.0 1.00 1.80
Grade : AISI 202 (3% Nickel)
Grade %C %Mn %P %S %Si %Cr %Ni %Cu
Min - 7.50 - - - 14.00 2.80 1.20
    to       to to to
Max 0.15 10.00 1.00 0.30 0.60 18.00 3.00 1.50
Grade : AISI 202 (4% Nickel)
Grade %C %Mn %P %S %Si %Cr %Ni %Cu
Min - 7.50 - - - 14.00 3.80 1.20
    to       to to to
Max 0.15 10.00 1.00 0.30 0.60 18.00 4.00 1.50

Standard Grades AS Per AISI Specification

AISI C% Mn% P% S% Si% Cr% Ni% MO
Max Max Max Max Max
Utensil Stainless Steel Grades
201 0.15 5.50/7.50 0.060 0.030 1.00 16.0/18.0 3.5/5.5 -
202 0.15 7.50/10.0 0.060 0.030 1.00 17.0/19.0 4.0/6.0 -
Austenitic Stainless Steel Grades
301 0.15 2.0 max 0.045 0.040 1.00 16.0/18.0 6.0/8.0 -
302 0.15 2.00 0.045 0.030 1.00 17.0/19.0 8.0/10.0 -
303 0.15 2.00 0.045 - 1.00 17.0/19.0 8.0/10.0 -
304 0.08 2.00 0.045 0.030 1.00 18.0/20.0 8.0/10.0 -
304S 0.03 2.00 0.045 0.030 1.00 18.0/20.0 8.0/10.0 -
309 0.20 2.0 max 0.045 0.030 1.00 22.0/24.0 12.0/15.0 -
309S 0.08 2.00 0.045 0.030 1.00 22.0/24.0 12.0/15.0 -
310 0.25 2.00 0.045 0.030 1.50 24.0/26.0 19.0/22.0 -
310S 0.08 2.00 0.045 0.030 1.50 24.0/26.0 19.0/22.0 -
316 0.08 2.00 0.045 0.030 1.00 16.0/18.0 10.0/14.0 2.0/3.0
316L 0.035 2.00 0.045 0.030 0.05 16.0/18.0 10.0/14.0 2.0/3.0
317 0.08 2.00 0.045 0.030 1.00 18.0/20.0 11.0/15.0 3.0/4.0
321 0.08 2.00 0.045 0.030 1.00 17.0/19.0 9.0/12.0 -
347 0.08 2.00 0.045 0.030 1.00 17.0/19.0 9.0/12.0 -
Ferritic Stainless Steel Grades
430 0.12 1.00 0.040 0.030 0.75 14.0/18.0 0.6 -
446 0.2 1.5 max 0.040 0.030 1.00 23.0/210 0.60 max -
Martensitic Stainless Steel Grades
403 0.15 1.00 0.040 0.030 0.50 11.5/13.0 0.6 -
410 0.15 1.00 0.040 0.030 1.00 11.5/13.5 0.6 -
414 0.15 1.00 0.040 0.030 1.00 11.5/13.5 1.25/2.50 -
420 0.15 1.00 0.040 0.030 1.00 12.0/14.0 0.6 -
431 0.2 1.0 max 0.040 0.030 1.00 15.0/17.0 1.25/2.50 -

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