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Related heat resisting 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 10095 and related standards. Castings products use different compositions and so have their own steel numbers in EN 10283. The related castings grades in both EN 10283 and BS 3100 are included in the table.

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 the BS EN 10095 table. Most of the specified ranges for the ‘BS’ grades can be found in the BS 1449 or BS 970 tables. The castings grades specified ranges can be found in the BS EN 10283 or BS 3100 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 (10095) Common Names BS (Wrought) AISI UNS En German SS EN (10283) BS (Cast) Composition Guide
. . . . . . . . . . C Cr Ni Others
1.4713 Sicromal 8 X10CrAlSi7 0.12x 6 0.5Al
1.4724 X10CrAl13 0.12x 12 1.0Al
1.4742 Sicromal 10 X10CrAl18 0.12x 17 1.0Al
1.4762 Sicromal 12 X10CrAl24 0.12x 23 1.5Al
1.4749 446 S44600 X18CrN28 .15-.20 26 0.2N
1.4818 153MA S30415 2371 .04-0.8 18 9 1.5Si:0.15N:0.05Ce
1.4828 X15CrNiSi20-12 0.20x 19 11 2.0Si
1.4833 309S16 309 S30900 (S30908) X12CrNi24-12 309C30 0.15x 22 12
1.4835 253MA S30815 X10CrNiSiN21-11 2368 .05-.12 20 10 2.0Si:0.15N:0.05Ce
1.4841 314 S31400 X15CrNiSi25-20 310C45 0.20x 25 20 2.0Si
1.4845 310S24 310 S31000 (S31008) X12CrNi25-21 0.10x 25 20
1.4854 353MA S35315 X6NiCrSiNCe35-25 0.4-.08 25 35 1.5Si:0.15N:0.05Ce
1.4941 321S51 321H S32109 X12CrNiTi18-9 2337 0.10x 18 9 0.6Ti


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


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