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Related ferritic stainless steel grades


The table is intended to relate former BS, En, German and Swedish grade designations to the current EN steel numbers, AISI grades, (‘grades’ in (brackets), are not a true AISI grades), and UNS, (Unified Numbering System), numbers. The table is based on the ‘wrought’, i.e. long products, (bars etc), flat products, (plates etc.), steel numbers published in EN 10088 and related standards. Castings products use different compositions and so have their own steel numbers in EN 10283. There are however no ferritic stainless steel grades specified in either EN 10283 or BS 3100.

The ‘Composition Guide’ is intended to represent the composition only. This does not show the specified or typical compositions of commercially available steels. Specified ranges for the wrought European grades can be found in either the BS EN 10088-2 or BS EN 10088-3 tables. Most of the specified ranges for the ‘BS’ grades can be found in the BS 1449 or BS 970 tables. Direct links to tables giving the specified range is available for the grades with underlines in the table. Just click on the number.

As an alternative to scanning down the list try the ‘find’ facility on your keyboard, using the ‘Ctrl’ and ‘F’ keys together. Type in the term you are looking for in the dialog box that then appears.

These are comparisons only and cannot be assumed to be direct equivalent grades. The data given is not intended to replace that shown in individual standards to which reference should always be made.

Grades table

EN (10088) Common Names BS (Wrought) AISI UNS En German SS EN(10283) BS (Cast) Composition Guide
. . . . . . . . . . C Cr Ni Mo Others
1.4000 403S17 410S S41008 X6Cr13 2301 0.08x 12
1.4002 405S17 405 S40500 X6CrAl13 0.08x 12 0.2 Al
1.4003 3Cr12 S41050 X2Cr11 0.03x 11 0.5
1.4016 430S17 430 S43000 60 X6Cr17 2320 0.08x 17
1.4113 434S17 434 S43400 X6CrMo17-1 0.08x 17 1
1.4509 18CrCb 441 S44100 0.015x 18 NbandTi
1.4510 430Ti 439 S43035 X6CrTi17 0.05x 17 0.6 Ti
1.4511 430Nb X6CrNb17 0.05x 17 0.6 Nb
1.4512 409S19 409 S40900 X6CrTi12 0.03x 11 0.5 Ti
1.4520 X2CrTi17 0.025x 17 0.5 Ti:0.015N
1.4521 444 S44400 X2CrMoTi18-2 0.025x 17 2 0.6 Ti
1.4526 436 S43600 X2CrMoNb17-1 0.08x 17 1.2 0.6 Nb
1.4592 X2CrMoTi2-4 0.025x 28 4.0 0.6 Ti
1.4605 X2CrAlTi18-2 0.03x 17 0.6 Ti:2.0 Al

Composition Guide figures are intended to be representative of the grade, not typical.
‘x’ indicates a maximum

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