Chemical compositions of AISI (ASTM/ASME) and UNS austenitic stainless steel grades
The data given is not intended to replace that shown in individual standards to which reference should always be made. 
Standard 300 series austenitic grades
Designation  | Chemical composition % by mass max unless stated  | ||||||||||
UNS No  | SAE No  | AISI No / Common Name  | C  | Si  | Mn  | P  | S  | Cr  | Mo  | Ni  | Others  | 
S30100  | 30301  | 301  | 0.15  | 1.00  | 2.00  | 0.045  | 0.030  | 16.0/18.0  | -  | 6.00/8.00  | N 0.10  | 
S30103  | -  | 301L  | 0.03  | 1.00  | 2.00  | 0.045  | 0.030  | 16.0/18.0  | -  | 6.00/8.00  | N 0.20  | 
S30153  | -  | 301LN  | 0.03  | 1.00  | 2.00  | 0.045  | 0.030  | 16.0/18.0  | -  | 6.00/8.00  | N 0.07/0.20  | 
S30200  | 30302  | 302  | 0.15  | 0.75  | 2.00  | 0.045  | 0.030  | 17.0/19.0  | -  | 8.00/10.0  | -  | 
S30215  | 30302B  | 302B  | 0.15  | 2.00/3.00  | 2.00  | 0.045  | 0.030  | 17.0/19.0  | -  | 8.00/10.0  | -  | 
S30300  | 30303  | 303  | 0.15  | 1.00  | 2.00  | 0.20  | 0.15 min  | 17.0/19.0  | 0.60  | 8.00/10.0  | Zr 0.60  | 
S30310  | -  | XM-5 (303Plus x)  | 0.15  | 1.00  | 2.50/4.50  | 0.20  | 0.25 min  | 17.00/19.00  | -  | 7.00/9.00  | -  | 
S30323  | 30303Se  | 303Se  | 0.15  | 1.00  | 2.00  | 0.20  | 0.060  | 17.0/19.0  | -  | 8.00/10.0  | Se 0.15 min  | 
S30330  | -  | 303Cu  | 0.15  | 1.00  | 2.00  | 0.15  | 0.10 min  | 17.00/19.00  | -  | 6.00/10.00  | Cu 2.5/4.00; Se 0.10  | 
S30400  | 30304  | 304  | 0.08  | 0.75  | 2.00  | 0.045  | 0.030  | 18.0/20.0  | -  | 8.00/10.5  | -  | 
S30403  | 30304L  | 304L  | 0.03  | 0.75  | 2.00  | 0.045  | 0.030  | 18.0/20.0  | -  | 8.00/12.0  | -  | 
S30430  | -  | 302HQ  | 0.03  | 1.00  | 2.00  | 0.045  | 0.030  | 17.0/19.0  | -  | 8.0/10.0  | Cu 3.0/4.0  | 
S30452  | -  | XM-21 (304HN)  | 0.08  | 1.00  | 2.00  | 0.045  | 0.030  | 18.0/20.0  | -  | 8.00/10.00  | N 0.16/0.30  | 
S30453  | -  | 304LN  | 0.030  | 0.75  | 2.00  | 0.045  | 0.030  | 18.0/20.0  | -  | 8.00/12.0  | N 0.10/0.16  | 
S30454  | -  | -  | 0.03  | 1.00  | 2.00  | 0.045  | 0.030  | 18.0/20.0  | -  | 8.0/11.0  | N 0.16/0.30  | 
S30500  | 30305  | 305  | 0.12  | 1.00  | 2.00  | 0.045  | 0.030  | 17.0/19.0  | -  | 10.5/13.0  | -  | 
S30800  | 30308  | 308  | 0.08  | 1.00  | 2.00  | 0.045  | 0.030  | 19.0/21.0  | -  | 10.0/12.0  | -  | 
S31600  | 30316  | 316  | 0.08  | 1.00  | 2.00  | 0.045  | 0.030  | 16.0/18.0  | 2.00/3.00  | 10.0/14.0  | -  | 
S31603  | 30316L  | 316L  | 0.03  | 1.00  | 2.00  | 0.045  | 0.030  | 16.0/18.0  | 2.00/3.00  | 10.0/14.0  | -  | 
S31635  | -  | 316Ti  | 0.08  | 0.75  | 2.00  | 0.045  | 0.030  | 16.0/18.0  | 2.00/3.00  | 10.0/14.0  | Ti 5x (C+N) / 0.70  | 
S31640  | -  | 316Cb  | 0.08  | 0.75  | 2.00  | 0.045  | 0.030  | 16.0/18.0  | 2.00/3.00  | 10.0/14.0  | Nb 10x C / 1.10  | 
S31653  | -  | 316LN  | 0.03  | 0.75  | 2.00  | 0.045  | 0.030  | 16.0/18.0  | 2.00/3.00  | 10.0/14.0  | N 0.10/0.16  | 
S31700  | 30317  | 317  | 0.08  | 1.00  | 2.00  | 0.045  | 0.030  | 18.0/20.0  | 3.00/4.00  | 11.0/15.0  | -  | 
S31703  | -  | 317L  | 0.030  | 0.75  | 2.00  | 0.045  | 0.030  | 18.0/20.0  | 3.00/4.00  | 11.0/15.0  | N 0.10  | 
S31725  | -  | 317LM  | 0.030  | 0.75  | 2.00  | 0.045  | 0.030  | 18.0/20.0  | 4.0/5.0  | 13.5/17.5  | N 0.20  | 
S31726  | -  | 317LMN  | 0.030  | 0.75  | 2.00  | 0.045  | 0.030  | 17.0/20.0  | 4.0/5.0  | 13.5/17.5  | N 0.10/0.20  | 
S31753  | -  | 317LN  | 0.030  | 0.75  | 2.00  | 0.045  | 0.030  | 18.0/20.0  | 3.0/4.0  | 11.0/15.0  | N 0.10/0.20  | 
S32100  | 30321  | 321  | 0.08  | 1.00  | 2.00  | 0.045  | 0.030  | 17.0/19.0  | -  | 9.00/12.0 5  | Ti 5 x C min  | 
S34700  | 30347  | 347  | 0.08  | 1.00  | 2.00  | 0.045  | 0.030  | 17.0/19.0  | -  | 9.00/13.0  | Nb+Ta 10 x C min  | 
S34720  | -  | 347F  | 0.08  | 1.00  | 2.00  | 0.040  | 0.18/0.35  | 17.00/19.00  | 0.75  | 9.00/12.00  | Nb 10xC / 1.10; Cu 0.75; Ta 0.05  | 
S34723  | -  | 347FSe  | 0.08  | 1.00  | 2.00  | 0.11/0.17  | 0.030  | 17.00/19.00  | 0.75  | 9.00/12.00  | Nb 10xC / 1.10; Cu 0.75; Se 0.15/0.35; Ta 0.05  | 
S34800  | 30348  | 348  | 0.08  | 0.75  | 2.00  | 0.045  | 0.030  | 17.0/19.0  | -  | 9.00/13.0  | Nb+Ta 10 x C / 1.00; Ta:0.10 max; Co 0.20  | 
S38400  | 30384  | 384  | 0.08  | 1.00  | 2.00  | 0.045  | 0.030  | 15.0/17.0  | -  | 17.0/19.0  | -  | 
Standard 200 series austenitic grades
Designation  | Chemical composition % by mass max unless stated  | ||||||||||
UNS No  | SAE No  | AISI No / Common Name  | C  | Si  | Mn  | P  | S  | Cr  | Mo  | Ni  | Others  | 
S20100  | 30201  | 201  | 0.15  | 1.00  | 5.50/7.50  | 0.060  | 0.030  | 16.0/18.0  | -  | 3.50/5.50  | N 0.25  | 
S20103  | -  | -  | 0.03  | 0.75  | 5.5/7.5  | 0.045  | 0.030  | 16.0/18.0  | -  | 3.5/5.5  | N 0.25  | 
S20153  | -  | -  | 0.03  | 0.75  | 6.4/7.5  | 0.045  | 0.015  | 16.0/17.5  | -  | 4.0/5.0  | N 0.10/0.25; Cu 1.00  | 
S20161  | -  | Gall-Tough  | 0.15  | 3.0/4.0  | 4.0/6.0  | 0.040  | 0.040  | 15.0/18.0  | -  | 4.0/6.0  | N 0.08/0.20  | 
S20162  | -  | -  | 0.15  | 2.5/4.5  | 4.0/8.0  | 0.040  | 0.040  | 16.5/21.0  | 0.05/0.25  | 6.0/10.0  | N 0.05/0.25  | 
S20200  | 30202  | 202  | 0.15  | 1.00  | 7.50/10.0  | 0.060  | 0.030  | 17.0/19.0  | -  | 4.00/6.00  | N 0.25  | 
S20300  | -  | XM-1 (203EZ)  | 0.08  | 1.00  | 5.0/6.5  | 0.045  | 0.18/0.35  | 16.0/18.0  | -  | 5.0/6.5  | Cu 1.75/2.25  | 
S20400  | -  | -  | 0.030  | 1.00  | 7.0/9.0  | 0.040  | 0.030  | 15.0/17.0  | -  | 1.50/3.00  | N 0.15/0.30  | 
S20500  | -  | 205  | 0.12/0.25  | 1.00  | 14.0/15.5  | 0.060  | 0.030  | 16.5/18.0  | -  | 1.0/1.7  | N 0.32/0.40  | 
S20910  | -  | XM-19 (Nitronic 50)  | 0.06  | 0.75  | 4.0/6.0  | 0.040  | 0.030  | 20.5/23.5  | 1.50/3.00  | 11.5/13.5  | Nb 0.10/0.30; V 0.10/0.30  | 
S21400  | -  | XM-31 (Tenelon)  | 0.12  | 0.30/1.00  | 14.0/16.0  | 0.045  | 0.030  | 17.0/18.5  | -  | 1.00  | -  | 
S21460  | -  | XM-14  | 0.12  | 0.75  | 14.0/16.0  | 0.060  | 0.030  | 17.0/19.0  | -  | 5.0/6.0  | N 0.35/0.50  | 
S21600  | -  | XM-17 (216)  | 0.08  | 0.75  | 7.5/9.0  | 0.045  | 0.030  | 17.5/22.0  | 2.00/3.00  | 5.0/7.0  | N 0.25/0.50  | 
S21603  | -  | XM-18 (216L)  | 0.03  | 0.75  | 7.5/9.0  | 0.045  | 0.030  | 17.5/22.0  | 2.00/3.00  | 5.0/7.0  | N 0.25/0.50  | 
S21800  | -  | Nitronic 60  | 0.10  | 3.5/4.5  | 7.0/9.0  | 0.060  | 0.030  | 16.0/18.0  | -  | 8.0/9.0  | N 0.08/0.18  | 
S21900  | -  | 21-6-9 (Nitronic 40)  | 0.08  | 1.00  | 8.00/10.00  | 0.045  | 0.030  | 19.0/21.50  | -  | 5.50/7.50  | N 0.15/0.40  | 
S21904  | -  | XM-11 (Nitronic 40)  | 0.04  | 1.00  | 8.00/10.00  | 0.045  | 0.030  | 19.00/21.50  | -  | 5.50/7.50  | N 0.15/0.40  | 
S24000  | -  | XM-29 (Nitronic 33)  | 0.08  | 0.75  | 11.5/14.5  | 0.060  | 0.030  | 17.0/19.0  | -  | 2.3/3.7  | N 0.20/0.40  | 
S24100  | -  | 18-2Mn (Nitronic 32)  | 0.15  | 1.00  | 11.0/14.0  | 0.045  | 0.030  | 16.5/19.00  | -  | 0.50/2.50  | N 0.20/0.45  | 
S28200  | -  | 18-18 Plus  | 0.15  | 1.00  | 17.00/19.00  | 0.045  | 0.030  | 17.00/19.00  | 0.75/1.25  | -  | N 0.40/0.60; Cu 0.75/1.25  | 
Special austenitic grades
Designation  | Chemical composition % by mass max unless stated  | ||||||||||
UNS No  | SAE No  | AISI No / Common Name  | C  | Si  | Mn  | P  | S  | Cr  | Mo  | Ni  | Others  | 
N08020  | -  | 20Cb-3  | 0.07  | 1.00  | 2.00  | 0.045  | 0.035  | 19.0/21.0  | 2.00/3.00  | 32.0/38.0  | Cu 3.0/4.0; Nb 8xC / 1.00  | 
N08024  | -  | 20Mo-4  | 0.03  | 0.50  | 1.00  | 0.035  | 0.035  | 22.50/25.00  | 3.50/5.00  | 35.00/40.00  | Cu 0.50/1.50; Nb+Ta 0.15/0.35  | 
N08026  | -  | 20Mo6  | 0.03  | 0.50  | 1.00  | 0.03  | 0.03  | 22.00/26.00  | 5.00/6.70  | 33.0/37.20  | Cu 2.00/4.00; N 0.10/0.16  | 
N08028  | -  | Sanicro28  | 0.030  | 1.0  | 2.50  | 0.030  | 0.030  | 26.0/28.0  | 3.0/4.0  | 30.0/34.0  | Cu 0.6/1.4  | 
N08366  | -  | AL-6X  | 0.035  | 1.00  | 2.00  | 0.040  | 0.030  | 20.00/22.00  | 6.00/7.00  | 23.50/25.50  | -  | 
N08367  | -  | AL-6XN  | 0.030  | 1.00  | 2.00  | 0.040  | 0.030  | 20.0/22.0  | 6.0/7.0  | 23.5/25.5  | Cu 0.75; N 0.18/0.25  | 
N08700  | -  | JS700  | 0.04  | 1.00  | 2.00  | 0.040  | 0.030  | 19.0/23.0  | 4.3/5.0  | 24.0/26.0  | Cu 0.50; Nb 8xC / 0.40  | 
N08904  | -  | 904L  | 0.020  | 1.00  | 2.00  | 0.045  | 0.035  | 19.0/23.0  | 4.0/5.0  | 23.0/28.0  | Cu 1.0/2.0  | 
N08925  | -  | 1925hMo  | 0.020  | 0.50  | 1.0  | 0.045  | 0.030  | 19.0/21.0  | 6.0/7.0  | 24.0/26.0  | Cu 0.8/1.5; N 0.1/0.2  | 
N08926  | -  | -  | 0.020  | 1.50  | 2.00  | 0.030  | 0.010  | 19.0/21.0  | 6.0/7.0  | 24.0/26.0  | Cu 0.5/1.5; N 0.15/0.25  | 
S30600  | -  | Cronifer 1815 LCSi  | 0.018  | 3.7/4.3  | 2.00  | 0.020  | 0.020  | 17.0/18.5  | 0.20  | 14.0/15.5  | Cu 0.50  | 
S30601  | -  | -  | 0.015  | 5.0/5.6  | 0.50/0.80  | 0.030  | 0.013  | 17.0/18.0  | 0.20  | 17.0/18.0  | Cu 0.05; N 0.35  | 
S31050  | -  | 310MoLN  | 0.020  | 0.50  | 2.00  | 0.030  | 0.010  | 24.0/26.0  | 1.60/2.60  | 0.09/0.15  | N 0.09/0.15  | 
S31254  | -  | 254SMO  | 0.020  | 0.80  | 1.00  | 0.030  | 0.010  | 19.5/20.5  | 6.0/6.5  | 17.5/18.5  | Cu 0.50/1.00; N 0.18/0.22  | 
S31266  | -  | -  | 0.030  | 1.00  | 2.0/4.0  | 0.035  | 0.020  | 23.0/25.0  | 5.2/6.2  | 21.0/24.0  | Cu 1.00/2.50; N 0.35/0.60; W 1.50/2.50  | 
S31277  | -  | -  | 0.020  | 0.50  | 3.00  | 0.030  | 0.010  | 20.5/23.0  | 6.5/8.0  | 26.0/28.0  | Cu 0.5/1.50; N 0.30/0.40  | 
S32050  | -  | -  | 0.030  | 1.00  | 1.50  | 0.035  | 0.020  | 22.0/24.0  | 6.0/6.8  | 20.0/23.0  | Cu 0.40  | 
S32615  | -  | -  | 0.07  | 4.8/6.0  | 2.00  | 0.045  | 0.030  | 16.5/19.5  | 0.30/1.50  | 19.0/22.0  | Cu 1.50/2.50  | 
S32654  | -  | 654SMO  | 0.020  | 0.50  | 2.0/4.0  | 0.030  | 0.005  | 24.0/25.0  | 7.0/8.0  | 21.0/23.0  | Cu 0.30/0.60; N 0.45/0.55  | 
S34565  | -  | Nirosta 4565S  | 0.030  | 1.00  | 5.0/7.0  | 0.030  | 0.010  | 23.0/25.0  | 4.0/5.0  | 16.0/18.0  | N 0.40/0.60; Nb 10x C / 1.00  | 
S35135  | -  | -  | 0.08  | 0.60/1.00  | 1.00  | 0.045  | 0.015  | 20.0/25.0  | 4.0/4.8  | 30./38.0  | Ti 0.40/1.00  | 
S38100  | -  | XM-15 (18-18-2)  | 0.08  | 1.50/2.50  | 2.00  | 0.030  | 0.030  | 17.0/19.0  | -  | 17.5/18.5  | -  | 
S38815  | -  | -  | 0.030  | 5.5/6.5  | 2.00  | 0.040  | 0.020  | 13.0/15.0  | 0.75/1.50  | 13.0/17.0  | Cu 0.75/1.50; Al 0.30  | 
Chemical compositions of AISI (ASTM/ASME) and UNS ferritic stainless steel grades
Designation  | Chemical composition % by mass max unless stated  | ||||||||||
UNS No  | SAE No  | AISI No / Common Name  | C  | Si  | Mn  | P  | S  | Cr  | Mo  | Ni  | Others  | 
S18200  | -  | XM-34 (18-2FM)  | 0.08  | 1.00  | 2.50  | 0.04  | 0.15 min  | 17.5/19.5  | 1.50/2.50  | -  | -  | 
S18235  | -  | -  | 0.025  | 1.00  | 0.50  | 0.030  | 0.15/0.35  | 17.5/18.5  | 2.00/2.50  | 1.00  | N 0.025; (C+N) 0.035; Ti 0.30/1.00  | 
S40300  | 51403  | 403  | 0.15  | 0.50  | 1.00  | 0.040  | 0.030  | 11.5/13.0  | -  | -  | -  | 
S40500  | 51405  | 405  | 0.08  | 1.00  | 1.00  | 0.040  | 0.030  | 11.5/14.5  | -  | -  | Al 0.10./0.30  | 
S40800  | -  | -  | 0.08  | 1.00  | 1.00  | 0.045  | 0.045  | 11.5/13.0  | -  | 0.50  | Ti 12xC/1.10  | 
S40900  | 51409  | 409  | 0.08  | 1.00  | 1.00  | 0.045  | 0.045  | 10.5/11.75  | -  | 0.50  | Ti 6xC/0.75  | 
S40910  | -  | -  | 0.030  | 1.00  | 1.00  | 0.040  | 0.020  | 10.5/11.7  | -  | 0.50  | N 0.030; Ti: 6x(C+N)/0.50; Nb 0.17  | 
S40920  | -  | -  | 0.030  | 1.00  | 1.00  | 0.040  | 0.020  | 10.5/11.7  | -  | 0.50  | N 0.030; Ti 0.15/0.50; Nb 0.10  | 
S40930  | -  | -  | 0.030  | 1.00  | 1.00  | 0.040  | 0.020  | 10.5/11.7  | -  | 0.50  | N 0.030; (Ti+Nb) [0.08+8x(C+N)]/0.75; Ti 0.05  | 
S40945  | -  | -  | 0.030  | 1.00  | 1.00  | 0.040  | 0.030  | 10.5/11.7  | -  | 0.50  | N 0.030; Ti 0.05/0.20; Nb 0.18/0.40  | 
S40975  | -  | -  | 0.030  | 1.00  | 1.00  | 0.040  | 0.030  | 10.5/11.7  | -  | 0.50/1.00  | N 0.030; Ti: 6x(C+N)/0.75  | 
S40976  | -  | -  | 0.030  | 1.00  | 1.00  | 0.040  | 0.030  | 10.5/11.7  | -  | 0.75/1.00  | N 0.040; Nb 10x(C+N)-0.80  | 
S40977  | -  | -  | 0.030  | 1.00  | 1.00  | 0.040  | 0.015  | 10.5/12.5  | -  | 0.30/1.00  | N 0.030  | 
S41003  | -  | -  | 0.030  | 1.00  | 1.50  | 0.040  | 0.030  | 10.5/12.5  | -  | 1.50  | -  | 
S41008  | -  | 410S  | 0.08  | 1.00  | 1.00  | 0.040  | 0.030  | 11.5/13.5  | -  | -  | -  | 
S41045  | -  | -  | 0.030  | 1.00  | 1.00  | 0.040  | 0.030  | 12.0/13.0  | -  | 0.50  | N 0.030; Nb 9x(C+N)/0.60  | 
S41050  | -  | -  | 0.04  | 1.00  | 1.00  | 0.040  | 0.030  | 10.5/12.5  | -  | 0.60/1.10  | N 0.10  | 
S41500  | -  | -  | 0.05  | 0.60  | 0.50/1.00  | 0.030  | 0.030  | 11.5/14.0  | 0.50/1.00  | 3.5/5.5  | -  | 
S41603  | -  | -  | 0.08  | 1.00  | 1.25  | 006  | 0.15min  | 12.0/14.0  | -  | -  | -  | 
S42035  | -  | -  | 0.08  | 1.00  | 1.00  | 0.045  | 0.030  | 13.5/15.5  | 0.2/1.2  | -  | Ti 0.30/0.50  | 
S43000  | 51430  | 430  | 0.12  | 1.00  | 1.00  | 0.040  | 0.030  | 16.0/18.0  | -  | -  | -  | 
S43020  | 51430F  | 430F  | 0.12  | 1.00  | 1.25  | 0.060  | 0.15 min  | 16.0/18.0  | 0.60  | -  | -  | 
S43023  | 51430FSe  | 430FSe  | 0.12  | 1.00  | 1.25  | 0.060  | 0.060  | 16.0/18.0  | -  | -  | Se 0.15  | 
S43036  | -  | 430Ti  | 0.10  | 1.00  | 1.00  | 0.040  | 0.030  | 16.00/19.50  | -  | 0.75  | Ti 5xC/0.75  | 
S43400  | 51434  | 434  | 0.08  | 1.00  | 1.00  | 0.040  | 0.030  | 16.0/18.0  | 0.75/1.25  | -  | -  | 
S43600  | 51436  | 436  | 0.08  | 1.00  | 1.00  | 0.040  | 0.030  | 16.0/18.0  | 0.75/1.25  | -  | Nb+Ta 5xC/0.70  | 
S44200  | 51442  | 442  | 0.20  | 1.00  | 1.00  | 0.040  | 0.035  | 18.0/23.0  | -  | -  | -  | 
Special ferritic grades
Designation  | Chemical composition % by mass max unless stated  | ||||||||||
UNS No  | SAE No  | AISI No / Common Name  | C  | Si  | Mn  | P  | S  | Cr  | Mo  | Ni  | Others  | 
S32803  | -  | Cronifer 2803Mo  | 0.015  | 0.55  | 0.50  | 0.020  | 0.0035  | 28.0/29.0  | 1.80/2.50  | 3.0/4.0  | N 0.020; (C+N) 0.030; Nb 0.15/0.50  | 
S43035  | -  | 435  | 0.030  | 1.00  | 1.00  | 0.040  | 0.030  | 17.0/19.0  | -  | 0.50  | Ti [0.20+4(C+N)] / 1.10; Al 0.15  | 
S43900  | 51439  | 439  | 0.07  | 1.00  | 1.00  | 0.040  | 0.030  | 17.0/19.0  | -  | 0.50  | Ti [0.20+4(C+N)] / 1.10; Al 0.15; N:0.04  | 
S43903  | 51439LL  | 439LL  | 0.014  | 1.00  | 1.00  | 0.040  | 0.030  | 17.0/19.0  | -  | 0.50  | Ti [0.20+4(C+N)] / 1.10; Al 0.15; N:0.04  | 
S43932  | -  | -  | 0.030  | 1.00  | 1.00  | 0.040  | 0.030  | 17.0/19.0  | -  | 0.50  | N 0.030; (Ti+Nb) [0.20+4(C+N)] / 0.75; Al 0.15  | 
S43940  | -  | -  | 0.030  | 1.00  | 1.00  | 0.040  | 0.015  | 17.5/18.5  | -  | 0.50  | Ti 0.10/0.60; Nb [0.30+(3xC)] min  | 
S44400  | -  | 444 18Cr-2Mo  | 0.025  | 1.00  | 1.00  | 0.040  | 0.030  | 17.5/19.5  | 1.75/2.50  | 1.00  | N 0.035; (Ti+Nb)[0.20+4(C+N)] / 0.80  | 
S44500  | -  | -  | 0.020  | 1.00  | 1.00  | 0.040  | 0.012  | 19.0/21.0  | -  | 0.60  | N 0.03; Cu 0.30/0.60; Nb 10x(C+N) / 0.80  | 
S44626  | -  | XM-33 (26-1Ti)  | 0.06  | 0.75  | 0.75  | 0.040  | 0.020  | 25.0/27.0  | 0.75/1.50  | 0.50  | N 0.04; Cu 0.20; Ti 0.20/1.00  | 
S44627  | -  | XM-27  | 0.010  | 0.40  | 0.40  | 0.020  | 0.020  | 25.0/27.0  | 0.75/1.50  | 0.50  | N 0.015; Cu 0.20; Nb 0.05/0.20; (Ni+Cu) 0.50  | 
S44635  | -  | Nu Monit (25-4-4)  | 0.025  | 0.75  | 1.00  | 0.040  | 0.030  | 24.5/26.0  | 3.5/4.5  | 3.5/4.5  | N 0.035; (Ti+Nb){0.20+4(C+N)] / 0.80  | 
S44660  | -  | Sea-cure (26-3-3)  | 0.030  | 1.00  | 1.00  | 0.040  | 0.030  | 25.0/28.0  | 3.0/4.0  | 1.0/3.5  | N 0.040; (Ti+Nb)0.20 / 1.00; (Ti+Nb) [6x(C+N)] min  | 
S44700  | -  | 29-4  | 0.010  | 0.20  | 0.30  | 0.025  | 0.020  | 28.0/30.0  | 3.5/4.2  | 0.15  | N 0.020; Cu 0.15; (C+N) 0.025  | 
S44735  | -  | -  | 0.030  | 1.00  | 1.00  | 0.040  | 0.030  | 28.0/30.0  | 3.6/4.2  | 1.00  | N 0.045; (Ti+Nb)0.20/1.00; (Ti+Nb) 6x (C+N) min  | 
S44800  | -  | 29-4-2  | 0.010  | 0.20  | 0.30  | 0.025  | 0.020  | 28.0/30.0  | 3.5/4.2  | 2.00/2.50  | N 0.020; Cu 0.15; (C+N) 0.025  | 
S46800  | -  | -  | 0.030  | 1.00  | 1.00  | 0.040  | 0.030  | 18.0/20.0  | -  | 0.50  | N 0.030; Ti 0.07/0.30; Nb 0.10/0.60; (Ti+Nb) [0.20+4(C+N)] / 0.80  | 
Chemical compositions of AISI (ASTM/ASME) and UNS heat resisting stainless steel grades
Designation  | Chemical composition % by mass max unless stated  | ||||||||||
UNS No  | SAE No  | AISI No / Common Name  | C  | Si  | Mn  | P  | S  | Cr  | Mo  | Ni  | Others  | 
S21500  | -  | Esshete 1250  | 0.06/0.15  | 0.20/1.0  | 5.50/7.0  | 0.045  | 0.030  | 14.0/16.0  | 0.80/1.20  | 9.00/11.0  | B 0.003/0.009; Nb 0.75/1.25; V 0.15/0.40  | 
S30409  | -  | 304H  | 0.04/0.10  | 0.75  | 2.00  | 0.045  | 0.030  | 18.0/20.0  | -  | 8.0/10.5  | -  | 
S30415  | -  | 153MA  | 0.04/0.06  | 1.00/2.00  | 0.80  | 0.045  | 0.030  | 18.0/19.0  | -  | 9.0/10.0  | N 0.12/0.18; Ce 0.03/0.08  | 
S30451  | -  | 304N  | 0.08  | 0.75  | 2.00  | 0.045  | 0.030  | 18.0/20.0  | -  | 8.0/10.5  | N 0.10/0.16  | 
S30452  | -  | 304HN (XM-21)  | 0.08  | 0.75  | 2.00  | 0.045  | 0.030  | 18.0/20.0  | -  | 8.0/10.5  | N 0.16/0.30  | 
S30615  | -  | RA85H  | 0.16/0.24  | 3.2/4.0  | 2.00  | 0.030  | 0.030  | 17.0/19.5  | -  | 13.5/16.0  | Al 0.80/1.50  | 
S30815  | -  | 253MA  | 0.05/0.10  | 1.40/2.00  | 0.80  | 0.040  | 0.030  | 20.0/22.0  | -  | 10.0/12.0  | N 0.14/0.20; Ce 0.03/0.08  | 
S30900  | 30309  | 309  | 0.20  | 1.00  | 2.00  | 0.045  | 0.030  | 22.0/24.0  | -  | 12.0/15.0  | -  | 
S30908  | 30309S  | 309S  | 0.08  | 0.75  | 2.00  | 0.045  | 0.030  | 22.0/24.0  | -  | 12.0/15.0  | -  | 
S30909  | -  | 309H  | 0.04/0.10  | 0.75  | 2.00  | 0.045  | 0.030  | 22.0/24.0  | -  | 12.0/15.0  | -  | 
S30940  | -  | 309Cb  | 0.08  | 0.75  | 2.00  | 0.045  | 0.030  | 22.0/24.0  | -  | 12.0/16.0  | Nb 10xC / 1.10  | 
S30941  | -  | 309HCb  | 0.04/0.10  | 0.75  | 2.00  | 0.045  | 0.030  | 22.0/24.0  | -  | 12.0/16.0  | Nb 10xC / 1.10  | 
S31000  | 30310  | 310  | 0.25  | 1.50  | 2.00  | 0.045  | 0.030  | 24.0/26.0  | -  | 19.0/22.0  | -  | 
S31008  | 30310S  | 310S  | 0.08  | 1.50  | 2.00  | 0.045  | 0.030  | 24.0/26.0  | -  | 19.0/22.0  | -  | 
S31009  | -  | 310H  | 0.04/0.10  | 0.75  | 2.00  | 0.045  | 0.030  | 24.0/26.0  | -  | 19.0/22.0  | -  | 
S31040  | -  | 310Cb  | 0.08  | 1.50  | 2.00  | 0.045  | 0.030  | 24.0/26.0  | -  | 19.0/22.0  | Nb 10xC / 1.10  | 
S31041  | -  | 310HCb  | 0.04/0.10  | 0.75  | 2.00  | 0.045  | 0.030  | 24.0/26.0  | -  | 19.0/22.0  | Nb 10xC / 1.10  | 
S31400  | 30314  | 314  | 0.25  | 1.50/3.00  | 2.00  | 0.045  | 0.030  | 23.0/26.0  | -  | 19.0/22.0  | -  | 
S31609  | -  | 316H  | 0.04/0.10  | 0.75  | 2.00  | 0.045  | 0.030  | 16.0/18.0  | 2.00/3.00  | 10.0/14.0  | -  | 
S31651  | -  | 316N  | 0.08  | 0.75  | 2.00  | 0.045  | 0.030  | 16.0/18.0  | 2.00/3.00  | 10.0/14.0  | N 0.10/0.16  | 
S32109  | -  | 321H  | 0.04/0.10  | 0.75  | 2.00  | 0.045  | 0.030  | 17.0/19.0  | -  | 9.0/12.0  | Ti 4x(C+N) / 0.70  | 
S33228  | -  | -  | 0.04/0.08  | 0.30  | 1.00  | 0.020  | 0.015  | 26.0/28.0  | -  | 31.0/33.0  | Al 0.025;Ce 0.05/0.10; Nb 0.6/1.0  | 
S33400  | -  | 334  | 0.08  | 1.00  | 1.00  | 0.030  | 0.015  | 18.0/22.0  | -  | 19.0/21.0  | Al 0.15/0.60; Ti 0.15/0.60  | 
S34709  | -  | 347H  | 0.04/0.10  | 0.75  | 2.00  | 0.045  | 0.030  | 17.0/19.0  | -  | 9.0/13.0  | Nb 8xC /1.00  | 
S34800  | -  | 348  | 0.08  | 0.75  | 2.00  | 0.045  | 0.030  | 17.0/19.0  | -  | 9.0/13.0  | Nb+Ta 10xC / 1.00; Ta 0.10; Co 0.20  | 
S34809  | -  | 348H  | 0.04/0.10  | 0.75  | 2.00  | 0.045  | 0.030  | 17.0/19.0  | -  | 9.0/13.0  | Nb+Ta 10xC /1.00; Ta 0.10; Co 0.20  | 
S35045  | -  | -  | 0.06/0.10  | 1.00  | 1.50  | 0.045  | 0.015  | 25.0/29.0  | -  | 32.0/37.0  | Al 0.15/0.60; Ti 0.15/0.60  | 
S35315  | -  | 353MA  | 0.04/0.08  | 1.20/2.00  | 2.00  | 0.040  | 0.030  | 24.0/26.0  | -  | 34.0/36.0  | N 0.12/0.18; Ce 0.03/0.10  | 
S41041  | -  | -  | 0.13/0.18  | 0.50  | 0.40/0.60  | 0.030  | 0.030  | 11.50/13.00  | 0.20  | 0.50  | Al 0.05; Nb 0.15  | 
S41425  | -  | -  | 0.05  | 0.50  | 0.50/1.00  | 0.020  | 0.005  | 12.0/15.0  | 1.50/2.00  | 4.0/7.0  | N 0.06/0.12; Cu 0.30  | 
S41800  | -  | Greek Ascoloy (615)  | 0.15/0.20  | 0.50  | 0.50  | 0.040  | 0.030  | 12.00/14.00  | 0.50  | 1.80/2.20  | W 2.50/3.50  | 
S42200  | -  | 616  | 0.20/0.25  | 0.50  | 0.50/1.00  | 0.025  | 0.025  | 11.00/12.50  | 0.90/1.25  | 0.50/1.00  | V 0.20/0.30; W 0.90/1.25  | 
S42300  | -  | Lapelloy (619)  | 0.27/0.32  | 0.50  | 0.95/1.35  | 0.025  | 0.025  | 11.00/12.00  | 2.50/3.00  | 0.50  | V 0.20/0.30  | 
S44300  | -  | MT443  | 0.20  | 1.00  | 1.00  | 0.040  | 0.030  | 18.0/23.0  | -  | 0.50  | Cu 0.90/1.25  | 
S44600  | 51446  | 446  | 0.20  | 1.00  | 1.50  | 0.040  | 0.030  | 23.0/27.0  | -  | -  | N 0.25  | 
S64152  | -  | XM-32  | 0.08/0.15  | 0.35  | 0.50/0.90  | 0.025  | 0.025  | 11.00/12.50  | 1.50/2.00  | 2.00/3.00  | N 0.01/0.05; V 0.25/0.40  | 
N08800  | -  | 800 (332)  | 0.10  | 1.00  | 1.50  | 0.045  | 0.015  | 19.0/23.0  | -  | 30.0/35.0  | Fe 39.5 min; Al 0.15/0.60; Ti 0.15/0.60  | 
N08810  | -  | 800H  | 0.05/0.10  | 1.00  | 1.50  | 0.045  | 0.015  | 19.0/23.0  | 30.0/35.0  | 30.0/35.0  | Cu 0.75; Fe 39.5 min; Al 0.15/0.60; Ti 0.15/0.60  | 
N08811  | -  | -  | 0.06/0.10  | 1.00  | 1.50  | 0.040  | 0.015  | 19.0/23.0  | -  | 30.0/35.0  | Cu 0.75; Fe 39.5 min; Al 0.15/0.60; Ti 0.15/0.60  | 
Chemical compositions of AISI (ASTM/ASME) and UNS martensitic and precipitation hardening stainless steel grades
designation  | Chemical composition % by mass max unless stated  | ||||||||||
UNS No  | SAE No  | AISI No / Common Name  | C  | Si  | Mn  | P  | S  | Cr  | Mo  | Ni  | Others  | 
S13800  | -  | XM-13 PH13-8Mo  | 0.05  | 0.10  | 0.20  | 0.010  | 0.008  | 12.25/13.25  | 2.00/2.50  | 7.50/8.50  | N 0.01; Al 0.90/1.35  | 
S15500  | -  | XM-12 15-5PH  | 0.07  | 1.00  | 1.00  | 0.040  | 0.030  | 14.0/15.5  | -  | 3.50/5.50  | Cu 2.5/4.5; Nb 0.15/0.45  | 
S15700  | -  | 632 15-7PH  | 0.09  | 1.00  | 1.00  | 0.040  | 0.030  | 14.00/16.00  | 2.00/3.00  | 6.50/7.25  | Al 0.75/1.50  | 
S17400  | -  | 630 17-4PH  | 0.07  | 1.00  | 1.00  | 0.040  | 0.030  | 15.5/17.5  | -  | 3.00/5.00  | Cu 3.00/5.00; Al 0.15/0.45  | 
S17600  | -  | 635  | 0.08  | 1.00  | 1.00  | 0.040  | 0.030  | 16.00/17.50  | -  | 6.00/7.50  | Al 0.40; Ti 0.40/1.20  | 
S17700  | -  | 631 17-7PH  | 0.09  | 1.00  | 1.00  | 0.040  | 0.040  | 16.00/18.00  | -  | 6.50/7.75  | Al 0.75/1.50  | 
S35000  | -  | 633  | 0.07/0.11  | 0.50  | 0.50/1.25  | 0.040  | 0.030  | 16.00/17.00  | 2.50/3.25  | 4.00/5.00  | N 0.07/0.13  | 
S35500  | -  | 634  | 0.10/0.15  | 0.50  | 0.50/1.25  | 0.040  | 0.030  | 15.00/16.00  | 2.50/3.25  | 4.00/5.00  | N 0.07/0.13  | 
S41000  | 51410  | 410  | 0.15  | 1.00  | 1.00  | 0.040  | 0.030  | 11.5/13.5  | -  | -  | -  | 
S41040  | -  | XM-30  | 0.18  | 1.00  | 1.00  | 0.040  | 0.030  | 11.0/13.0  | -  | -  | Nb 0.05/0.30  | 
S41400  | 51414  | 414  | 0.15  | 1.00  | 1.00  | 0.040  | 0.030  | 11.5/13.5  | -  | 1.25/2.50  | -  | 
S41500  | -  | -  | 0.05  | 0.60  | 0.50/1.00  | 0.030  | 0.030  | 11.5/14.0  | 0.50/1.00  | 3.5/5.5  | -  | 
S41600  | 51416  | 416  | 0.15  | 1.00  | 1.25  | 0.060  | 0.15 min  | 12.0/14.0  | 0.60  | -  | Zr 0.60  | 
S41610  | -  | XM-6 (416 Plus X)  | 0.15  | 1.00  | 1.50/2.50  | 0.06  | 0.15 min  | 12.0/14.0  | -  | -  | -  | 
S41623  | 51416Se  | 416Se  | 0.15  | 1.00  | 1.25  | 0.060  | 0.060  | 12.0/14.0  | -  | -  | Se 0.15 min  | 
S42000  | 51420  | 420  | 0.15 min  | 1.00  | 1.00  | 0.040  | 0.030  | 12.0/14.0  | -  | -  | -  | 
S42010  | -  | Trim Rite  | 0.15/0.30  | 1.00  | 1.00  | 0.040  | 0.030  | 13.5/15.00  | 0.40/0.85  | 0.35/0.85  | -  | 
S42020  | 51420F  | 420F  | 0.15 min  | 1.00  | 1.25  | 0.060  | 0.15 min  | 12.0/14.0  | 0.60  | -  | -  | 
S42023  | 51420FSe  | 420FSe  | 0.30/0.40  | 1.00  | 1.25  | 0.060  | 0.060  | 12.0/14.0  | -  | -  | Se 0.15 min  | 
S42900  | 51429  | 429  | 0.12  | 1.00  | 1.00  | 0.040  | 0.030  | 14.0/16.0  | -  | -  | -  | 
S43100  | 51431  | 431  | 0.20  | 1.00  | 1.00  | 0.040  | 0.030  | 15.0/17.0  | -  | 1.25/2.50  | -  | 
S44002  | 51440A  | 440A  | 0.60/0.75  | 1.00  | 1.00  | 0.040  | 0.030  | 16.0/18.0  | 0.75  | -  | -  | 
S44003  | 51440B  | 440B  | 0.75/0.95  | 1.00  | 1.00  | 0.040  | 0.030  | 16.0/18.0  | 0,75  | -  | -  | 
S44004  | 51440C  | 440C  | 0.95/1.20  | 1.00  | 1.00  | 0.040  | 0.030  | 16.0/18.0  | 0.75  | -  | -  | 
S44020  | 51440F  | 440F  | 0.95/1.20  | 1.00  | 1.25  | 0.060  | 0.15 min  | 16.0/18.0  | 0.75  | -  | Zr 0.75  | 
S44023  | 51440FSe  | 440FSe  | 0.95/1.20  | 1.00  | 1.25  | 0.060  | 0.060  | 16.0/18.0  | -  | -  | Se 0.15 min  | 
S45000  | -  | XM-25 Custom 450  | 0.05  | 1.00  | 1.00  | 0.030  | 0.030  | 14.00/16.00  | 0.50/1.00  | 5.00/7.00  | Cu 1.25/1.75; Nb 8xC min  | 
S45500  | -  | XM-16 Custom 455  | 0.05  | 0.50  | 0.50  | 0.040  | 0.030  | 11.00/12.50  | 0.50  | 7.50/9.50  | Cu 1.50/2.50; Nb 0.10/0.50  | 
S45503  | -  | -  | 0.010  | 0.20  | 0.50  | 0.010  | 0.010  | 11.00/12.50  | 0.50  | 7.50/9.50  | Cu 1.50/2.50; Ti 1.00/1.35  | 
S46500  | -  | -  | 0.02  | 0.25  | 0.25  | 0.015  | 0.010  | 11.00/12.50  | 0.75/1.25  | 10.75/11.25  | Mo 0.75/1.25; Ti 1.50/1.80  | 
S66286  | -  | A286  | 0.08  | 1.00  | 2.00  | 0.040  | 0.030  | 13.50/16.00  | 1.00/1.50  | 24.0/27.0  | Al 0.35; B 0.0010/0.010; Ti 1.90/2.35; V 0.10/0.50  | 
Composition of Duplex Stainless Steel

 
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