Chemical Composition


Round Steel Tube
Chemical Composition:-200 & 300 Series
AISI/ASTM Steel NO Equivalent to DIN EN C MAX Mn MAX P MAX S MAX Si MAX Cr Ni Mo Other Elements
TP 201 1,4372 0.150 5.5-7.5 0.060 0.030 1.00 16-18 3.5-5.5 - N-0.25 MAX
TP 202 1,4373 0.150 75.5-10.0 0.060 0.030 1.00 17-19 4-6 - N-0.25 MAX
TP301 1,431 0.150 2.0 0.045 0.030 1.00 16-18 6-8 - N-0.10 Max
304 1,4301 0.080 2.0 0.045 0.030 1.00 18-20 8-11 - -
TP304L 1,4307 0.035 2.0 0.045 0.030 1.00 18-20 6-8 - -
304N - 0.080 2.0 0.045 0.030 1.00 18-20 8-11 - N-0.10-0.16
TP 304 LN 1,4311 0.035 2.0 0.045 0.030 1.00 18-20 8-11 - N-0.10-0.16
TP 308 - 0.080 2.0 0.045 0.030 1.00 19-21 10-12 - -
TP 309 - 0.200 2.0 0.045 0.030 1.00 22-24 12-151 - -
TP 309S 1,4833 0.080 2.0 0.045 0.030 1.00 22-24 12-15 - -
TP 310 - 0.250 2.0 0.045 0.030 1.50 24-26 19-22 - -
TP 310S 1,4845 0.080 2.0 0.045 0.030 1.00 24-26 19-22 - -
TP 316 1,4401 0.080 2.0 0.045 0.030 1.00 16-18 10-14 2-3 -
TP 316L 1,4404 0.0335 2.0 0.045 0.030 1.00 16-18 10-14 2-3 -
TP 316N - 0.080 2.0 0.045 0.030 1.00 16-18 10-13 2-3 N-0.10-0.16
TP 316LN 1,4406 0.035 2.0 0.045 0.030 1.00 16-18 10-13 2-3 N-0.10-0.16
TP 316 TI 1,4571 0.080 2.0 0.045 0.030 0.75 16-18 10-14 2-3 Ti-5(C+N)-0.70/N-0.10 MAX
TP 317 - 0.080 2.0 0.045 0.030 1.00 18-20 11-15 3-4 -
TP 317L 1.4438 0.035 2.0 0.045 0.030 1.00 18-20 11-15 3-4 -
TP 321 1.4541 0.080 2.0 0.045 0.030 1.00 17-19 9-12 - Ti-5(C+N)-).70
TP 347 1.455 0.080 2.0 0.045 0.030 1.00 17-20 9-13 - NB-10xC-1.10
UNS S31254 - 0.020 1.0 0.030 0.010 0.80 19.5-20.5 17.5-18.5 6.0-6.5 N 0.18-0.22 & Cu-5-1.0

Chemical Composition:-400 Series
AISI/ASTM Steel NO Equivalent to DIN EN C MAX Mn MAX P MAX S MAX Si MAX Cr Ni Mo Other Elements
TP 405 - 0.080 1.00 0.040 0.030 1.00 11.5-14.5 0.50 - AL-0.10-0.30
TP 409 1.4512 0.080 1.00 0.045 0.030 1.00 10.5-11.7 0.50 - Ti-6xc MIN 0.75 MAX
TP 410 1.4006 0.150 1.00 0.045 0.030 1.00 11.5-13.7 - - -
TP 429 - 0.120 1.00 0.040 0.030 1.00 14-16 - - -
TP 430 1.4016 0.120 1.00 0.040 0.030 1.00 16-18 - - -
TP 430 TI 1.451 0.100 1.00 0.040 0.030 1.00 16-19.5 0.75 - Ti-5 x C MIN ; 0.75 Max
TP 439 - 0.070 1.00 0.040 0.030 1.00 17-19 0.50 - N-0.04 MAX TI-0.20+(C+N)MIN:1.10 Max

Duplex & Super Duplex Grades
AISI/ASTM Steel NO Equivalent to DIN EN C MAX Mn MAX P MAX S MAX Si MAX Cr Ni Mo Other Elements
UNS S31500 1.4417 0.030 1.20-2.00 0.030 0.030 1.40-2.00 18-19 4.3-5.2 2.5-30 N-0.05-0.1
UNS S31800 1.4462 0.030 2.00 0.030 0.020 1.00 21-23 4.5-6.5 2.5-3.5 N-0.08-0.20
UNS S32205 - 0.030 2.00 0.030 0.020 1.00 22-23 4.5-6.5 3-3.5 N-0.14-0.20
UNS S32304 1.4362 0.030 2.50 0.040 0.040 1.00 21.5-24.5 3.0-5.5 0.05-0.60 N0.05-0.20 CU0.05-0.600
UNS S32750 1.441 0.030 1.20 0.035 0.020 0.80 24-26 6-8 3-5 N0.024-0.32; CU0.05 MAX
UNS S32760 1.4501 0.050 1.00 0.030 0.010 1.00 24-26 6-8 3-4 N-0.020-0.30; CU0.5-1.0; W-0.5-1.0,%CR + 3.3x% MO + 16X%N=40 Min