{"id":3928,"date":"2025-11-26T19:53:49","date_gmt":"2025-11-26T11:53:49","guid":{"rendered":"https:\/\/zhss.org\/?p=3928"},"modified":"2025-12-17T11:10:30","modified_gmt":"2025-12-17T03:10:30","slug":"astm-a815-s31803-s32205","status":"publish","type":"post","link":"https:\/\/zhss.org\/tr\/metals\/stainless-steel\/high-performance-stainless-steels\/astm-a815-s31803-s32205\/","title":{"rendered":"ASTM A815 (S31803\/S32205)"},"content":{"rendered":"\t\t
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Stainless Steel, Duplex\n\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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ASTM A815 (S31803\/S32205)\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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A duplex stainless steel with a microstructure of 50:50 austenite and ferrite.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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ASTM A815 \/ UNS S31803<\/a> refers to duplex stainless steel pipe fittings made from grade S31803 (2205)<\/a> \u2013 a ferritic\u2013austenitic (duplex) stainless steel with about 22% Cr, 5\u20136% Ni, 3% Mo and nitrogen, offering high strength and excellent resistance to chloride stress-corrosion cracking, pitting and crevice corrosion.<\/p>

Duplex stainless steels are extremely corrosion resistant, work hardenable alloys. Their microstructures consist of a mixture of austenite and ferrite phases. As a result, duplex stainless steels display properties characteristic of both austenitic and ferritic stainless steels. This combination of properties can mean some compromise when compared with pure austenitic and pure ferritic grades.<\/p>

Duplex stainless steels are in most cases, tougher than ferritic stainless steels. Strengths of duplex stainless steels can in some cases be double that for austenitic stainless steels.<\/p>

Whilst duplex stainless steels are considered resistant to stress corrosion cracking, they are not as resistant to this form of attack as ferritic stainless steels. However, the corrosion resistance of the least resistant duplex stainless steels is greater than that for the most commonly used grades of stainless steels, i.e. 304<\/a> and 316<\/a>.<\/p>

Duplex steels are also magnetic, a property that can be used to easily differentiate them from common austenitic grades of stainless.<\/p>

Property data given in this document is typical for flat rolled products covered by ASTM A240\/A240M. ASTM, EN or other standards may cover products sold. It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this datasheet.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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PLEASE NOTE<\/strong><\/span><\/p>

If you do not see what you are looking for, please contact your\u00a0local service centre<\/a>\u00a0<\/span>with your specific requirements.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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S31803\/S32205 Stainless Steel Related Specifications\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\n System \/ Standard <\/td>\n \n Country \/ Region <\/td>\n \n Grade \/ Designation <\/td>\n <\/tr>\n
\n UNS <\/td>\n \n International <\/td>\n \n S31803 <\/td>\n <\/tr>\n
\n Common Name <\/td>\n \n International <\/td>\n \n 2205 duplex <\/td>\n <\/tr>\n
\n EN \/ W.Nr. <\/td>\n \n Europe <\/td>\n \n 1.4462 <\/td>\n <\/tr>\n
\n EN Name <\/td>\n \n Europe <\/td>\n \n X2CrNiMoN22-5-3 <\/td>\n <\/tr>\n
\n ASTM A182 <\/td>\n \n USA <\/td>\n \n F51 (forgings, flanges) <\/td>\n <\/tr>\n
\n ASTM A240 <\/td>\n \n USA <\/td>\n \n 2205 (plate, sheet, strip) <\/td>\n <\/tr>\n
\n ASTM A276 \/ A479 <\/td>\n \n USA <\/td>\n \n 2205 \/ S31803 (bars, shapes) <\/td>\n <\/tr>\n
\n ASTM A789 \/ A790 <\/td>\n \n USA <\/td>\n \n S31803 (duplex tubes \/ pipes) <\/td>\n <\/tr>\n
\n ASTM A815 <\/td>\n \n USA <\/td>\n \n WPS S31803 duplex pipe fittings <\/td>\n <\/tr>\n
\n GB \/ China <\/td>\n \n China <\/td>\n \n 022Cr22Ni5Mo3N (duplex 2205 equivalent) <\/td>\n <\/tr>\n
\n JIS <\/td>\n \n Japan <\/td>\n \n SUS329J3L (2205 \/ S31803 family) <\/td>\n <\/tr>\n <\/table>\n<\/div>