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Chemical Information For Stainless Grade

  Grades (Austenitic)
 
AISI
TYPE
Chemical Composition ( % ) Common Characteristics &
Applications
C Mn Si Cr Ni Mo Other
201 0.15 5.5 - 7.5 1.00 16.00 - 18.00 3.50 - 5.50
- N:0.25 max
Tabular
Furniture
Hospital Care
Decorative Parts
202 0.15 7.5 - 10 1.00 17.00 - 19.00 4.00 - 6.00 - N:0.25 max
204 CU 0.08 6.5 - 8.5 2.00 16.00 - 17.00 1.50 - 3.00 0.30 MAX N:0.25 max
Cu:2.0-3.0
   
  Grades (Austenitic)
 
AISI
TYPE
Chemical Composition ( % ) Common Characteristics
&
Applications
C Mn Si Cr Ni Mo Other
303 0.15 2.00 1.00 17.0 - 19.0 8.0 - 10.0 - S O . 15 min Free machining grade for high speed repetition machining
304 0.08 2.00 1.00 18.0 - 20.0 8.0 - 11.0 - - Standard 18/8 austentic grade. Very good fabrication characteristics with high corrosion resistance
304L 0.030 2.00 1.00 18.0 - 20.0 8.0 - 11.0 - - Good resistance to intergranular corrosion for heavy section welding and high temperature applications.
316 0.080 2.00 1.00 16.0 - 18.0 10.0 - 14.0 2.0 - 3.0   Higher resistance than 304 to general corrosion and pitting.
316L 0.030 2.00 1.00 16.0 - 18.0 10.0 - 14.0 2.0 - 3.0   Good resistance to intergranular corrosion for heavy section welding and high temperature applications.
316Ti 0.080 2.00 1.00 16.0 - 18.0 10.0 - 14.0 2.0 - 3.0 N 0. 10
Ti5x(C+N)- 0.70
Titanium stabilished 18/8 steel for high temperature applications.
321 0.080 2.00 1.00 17.0 - 19.0 9.0 - 12.0     Titanium stabilished grade resists intergranular corrosion For high temperature application.
  Grades ( Ferritic & Martensitic )
 
AISI
TYPE
Chemical Composition ( % ) Common Characteristics &
Applications
C Mn Si Cr Ni Mo Other
Ferritic
430 0.12 1.00 1.00 16.0 - 18.0 - - - Good combination of corrosion resistance and formability Non hardnable, used for cold headed fasteners.
Martensitic
410 0.15 1.00 1.00 11.5 - 13.5 - - - Hardneble to achieve best strength and corrision resistance.
416 0.15 1.25 1.00 12.0 - 14.0 - - S 0.15 min Free machining hardenable grade. orrosion resistance not as good as for 410.
420 0.16 - 0.25 1.00 1.00 15.0 - 17.0 - - - Higher carbon content than 410 gives higher hardness for cutlery knife blades, dies and surgical instruments. Also used for pump shaft.
431 0.20 1.00 1.00 15.0 - 17.0 1.25 - 2.50
    High Strength, excellent toughness and corrision resistance similar to that of 304. Used pump shafts, bolts and valve components.
 
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