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Related austenitic stainless steel grades

Introduction

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’ ie 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. 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 either the BS EN 10088-2 or BS EN10088-3 tables. 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 (10088) Common Names BS (Wrought) AISI UNS En German SS EN (10283) BS (Cast) Composition Guide
. . . . . . . . . . C Cr Ni Mo Others
1.4301 304S31 304 S30400 58E X5CrNi18-10 2333 1.4308 304C15 0.07x 18 8
1.4303 305S19 305 S30500 X5CrNi18-12 0.06x 18 11
1.4305 303S31 303 S30300 58M X10CrNiS18-9 2346 0.10x 18 8 0.35xS
1.4306 304L X2CrNi19-11 2352 0.030x 18 10
1.4307 304S11 304L S30403 2352 304C12 0.030x 18 8
1.4310 301S21 301 S30100 X12CrNi17-7 2331 .05/.15 17 6
1.4311 304S61 304LN S30453 X2CrNiN18-10 2371 1.4309 0.030x 18 9 0.22xN
1.4372 201 S20100 0.15x 17 4.5 6.5Mn
1.4401 316S31 316 S31600 58J X5CrNiMo17-12-2 2347 1.4408 316C16 0.07x 17 11 2
1.4404 316S11 316L S31603 X2CrNiMo17-13-2 2348 1.4409 316C12 0.030x 17 11 2
1.4406 316S61 316LN S31653 X2CrNiMoN17-12-2 0.030x 17 11 2 0.22xN
1.4432 316S13 316L 2353 0.030x 17 11 2.5
1.4435 316S13 316L XCrNiMo18-14-3 2353 0.030x 17 13 2.5
1.4436 316S33 316 58J X5CrNiMo17-13-3 2343 0.05 17 11 2.5
1.4438 317S12 317L S31703 2367 0.030x 18 13 3
1.4439 X2CrNiMoN17-13-5 1.4446 0.030x 17 13 4 0.22xN
1.4541 321S31 321 S32100 58B X6CrNiTi18-10 2337 0.08x 18 9 0.5Ti
1.4550 347S31 347 S34700 58F X6CrNiNb18-10 2338 1.4552 347C17 0.08x 18 9 0.5Nb
1.4563 Sanicro28/Alloy28 N08028 X1NiCrMoCu31-27-4 2584 0.02x 26 30 3.0 1.0Cu
1.4567 394S17 304Cu S30430 0.04x 18 9 4xCu
1.4571 320S31 (316Ti) S31635 X6CrNoMoTi17-12-2 2350 1.4581 0.08x 17 11 2 0.5Ti
1.4539 904L 904S13 N08904 X1CrNiMoCuN25-20-5 2562 1.4584 0.020x 19 24 4 1.5Cu
1.4547 254SMO/F44 S31254 2378 1.4593 0.020x 20 18 6 0.75Cu
1.4529 1925hMo N08925 X1NiCrMoCuN25-20-6 1.4588 0.020x 19 24 6 1.25Cu

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

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