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Chemical composition for AISI Standard stainless steel

Type Chemical Composition
Grade No. C Mn P S Si Cr Ni Mo Others
AISI 201 <=0.15 5.50~7.50 <=0.06 <=0.03 <=0.75 16.0~18.0 3.5~5.5 - N<=0.25
AISI 202 <=0.15 7.50~10.0 <=0.06 <=0.03 <=0.75 17.0~19.0 4.0~6.0 - N<=0.25
AISI 205 0.12~0.25 14.0~15.5 <=0.06 <=0.03 <=0.75 16.5~18.0 1.0~1.75 - N 0.32~0.40
AISI 301 <=0.15 <=2.0 <=0.045 <=0.03 <=0.75 16.0~18.0 6.0~8.0 - N~0.10
AISI 302 <=0.15 <=2.0 <=0.045 <=0.03 <=0.75 17.0~19.0 8.0~10.5 - N~0.10
AISI 302B <=0.15 <=2.0 <=0.045 <=0.03 2.0~3.0 17.0~19.0 8.0~10.5 - N~0.10
AISI 303 <=0.15 <=2.0 <=0.2 >=0.15 <=1.0 17.0~19.0 8.0~10.5 - N~0.10
AISI 303Se <=0.15 <=2.0 <=0.2 <=0.06 <=1.0 17.0~19.0 8.0~10.0 - -
AISI 304 <=0.08 <=2.0 <=0.045 <=0.03 <=0.75 18.0~20.0 8.0~10.5 - Se>=0.15
AISI 304L <=0.03 <=2.0 <=0.045 <=0.03 <=0.75 18.0~20.0 8.0~12.0 - N~0.10
AISI 304N <=0.08 <=2.0 <=0.045 <=0.03 <=0.75 18.0~20.0 8.0~10.5 - N~0.10
AISI 304LN <=0.03 <=2.0 <=0.045 <=0.03 <=0.75 18.0~20.0 10.5~12.0 - N 0.10~0.16
AISI 305 <=0.12 <=2.0 <=0.045 <=0.03 <=0.75 17.0~19.0 10.5~13.0 - N 0.10~0.16
AISI 308 <=0.08 <=2.0 <=0.045 <=0.03 <=0.75 19.0~21.0 10.0~12.0 - -
AISI 309 <=0.2 <=2.0 <=0.045 <=0.03 <=0.75 22.0~24.0 12.0~15.0 - -
AISI 309S <=0.08 <=2.0 <=0.045 <=0.03 <=0.75 22.0~24.0 12.0~15.0 - -
AISI 310 <=0.25 <=2.0 <=0.045 <=0.03 <=1.50 24.0~26.0 19.0~22.0 - -
AISI 310S <=0.08 <=2.0 <=0.045 <=0.03 <=1.50 24.0~26.0 19.0~22.0 - -
AISI 314 <=0.25 <=2.0 <=0.045 <=0.03 1.5~3.0 23.0~26.0 19.0~22.0 - -
AISI 316 <=0.08 <=2.0 <=0.045 <=0.03 <=0.75 16.0~18.0 10.0~14.0 1.75~2.25 -
AISI 316F <=0.08 <=2.0 <=0.2 <=0.1 <=0.75 16.0~18.0 10.0~14.0 1.75~2.25 -
AISI 316L <=0.03 <=2.0 <=0.045 <=0.03 <=0.75 16.0~18.0 10.0~14.0 2.0~3.0 -
AISI 316Ti <=0.08 <=2.0 <=0.045 <=0.03 <=0.75 16.0~18.0 10.0~14.0 2.0~3.0 N≤0.10,Ti≥5x(C+N)~0.7
AISI 316N <=0.08 <=2.0 <=0.045 <=0.03 <=0.75 16.0~18.0 10.0~14.0 2.0~3.0 N 0.10~0.16
AISI 317 <=0.08 <=2.0 <=0.045 <=0.03 <=0.75 18.0~20.0 11.0~15.0 3.0~4.0 -
AISI 317L <=0.03 <=2.0 <=0.045 <=0.03 <=0.75 18.0~20.0 11.0~15.0 3.0~4.0 -
AISI 321 <=0.08 <=2.0 <=0.045 <=0.03 <=0.75 17.0~19.0 9.0~12.0 - N≤0.10,Ti≥5x(C+N)~0.7
AISI 329 <=0.10 <=2.0 <=0.040 <=0.03 <=0.75 23.0~28.0 2.5~5.0 1.0~2.0 -
AISI 347 <=0.08 <=2.0 <=0.045 <=0.03 <=0.75 17.0~19.0 9.0~13.0 - Nb+Ta:10xC%~1.00
AISI 348 <=0.08 <=2.0 <=0.045 <=0.03 <=0.75 17.0~19.0 9.0~13.0 - Nb+Ta≥10xC%~1.00 Ta≥0.10,Co≥0.20
AISI 403 <=0.15 <=1.0 <=0.040 <=0.03 <=0.50 11.5~13.0 - - -
AISI 405 <=0.08 <=1.0 <=0.040 <=0.03 <=1.00 11.5~14.5 - - AI:0.10~0.30
AISI 409 <=0.08 <=1.0 <=0.045 <=0.045 <=1.00 10.5~11.75 - - Ti:6xC%~0.75
AISI 410 <=0.15 <=1.0 <=0.040 <=0.03 <=1.00 11.5~13.5 <=0.75 - -
AISI 414 <=0.15 <=1.0 <=0.040 <=0.03 <=1.00 11.5~13.5 1.25~2.50 - -
AISI 416 <=0.15 <=1.25 <=0.06 <=0.15 <=1.00 12.0~14.0 - - -
AISI 416Se <=0.15 <=1.25 <=0.06 <=0.06 <=1.00 12.0~14.0 - - Se>=0.15
AISI 420 >0.15 <=1.00 <=0.040 <=0.03 <=1.00 12.0~14.0 <=0.75 <=0.50 -
AISI 420F 0.30~0.40 <=1.25 <=0.06 <=0.15 <=1.00 12.0~14.0 <=0.50 - Cu<=0.60
AISI 429 <=0.12 <=1.0 <=0.040 <=0.03 <=1.00 14.0~16.0 <=0.75 - -
AISI 430 <=0.12 <=1.0 <=0.040 <=0.03 <=1.00 16.0~18.0 <=0.75 - -
AISI 430F <=0.12 <=1.25 <=0.06 <=0.15 <=1.00 16.0~18.0 - - -
AISI 430FSe <=0.12 <=1.25 <=0.06 <=0.06 <=1.00 16.0~18.0 - - Se>=0.15
AISI 431 <=0.20 <=1.00 <=0.040 <=0.03 <=1.00 15.0~17.0 1.25~2.50 - -
AISI 434 <=0.12 <=1.00 <=0.040 <=0.03 <=1.00 16.0~18.0 - - -
AISI 440A 0.60~0.75 <=1.00 <=0.040 <=0.03 <=1.00 16.0~18.0 - - -
AISI 440B 0.75~0.95 <=1.00 <=0.040 <=0.03 <=1.00 16.0~18.0 - - -
AISI 440C 0.95~1.20 <=1.00 <=0.040 <=0.03 <=1.00 16.0~18.0 - - -
AISI 442 <=0.20 <=1.00 <=0.040 <=0.03 <=1.00 18.0~23.0 - - -
AISI 446 <=0.20 <=1.50 <=0.040 <=0.03 <=1.00 23.0~27.0 <=0.75 - N: 0.10~0.25
AISI 631 <=0.09 <=1.00 <=0.040 <=0.03 <=1.00 16.0~18.0 6.50~7.50 0.4~0.65 AI 0.75~1.00