X2CrNiMoN22-5-2, X2CrNiMoN22-5-3, X12CrNiMoN duplex steel

S31803 (F51, 2205, 1.4462) Duplex stainless steel similar brands:
UNS S31803 (USA), W.Nr.1.4462, X2CrNiMoN22-5-2, X2CrNiMoN22-5-3, X12CrNiMoN (Germany), 00Cr22Ni5Mo3N, 022Cr19Ni5Mo3Si2N, 00Cr18Ni5Mo3Si2, F51 (China)、SS2377, SAF2205 (Sweden), 329J3L (Japan), Z3CrNi22.05AZ (France)

Chemical composition of duplex stainless steel:

C≤	Si≤	Mn≤	P≤	S≤	Cr	Ni	Mo	N
0.03	1.00	2.00	0.030	0.020	21.0 23.0	4.50 6.50	2.50 3.50	0.08 0.20

 

Mechanical properties of duplex stainless steel:

Heat treatment system      ℃	σb(Mpa) ≥	σs(Mpa)≥	δ%≥	Brinell	Rockwell
1020~1100	620	450	25	290	30.5

 

Duplex stainless steel applications:

has medium to high strength and good resistance to common corrosion / stress, corrosion / cracking. Applications include pumps, valves, flanges and piping systems that are widely used in the oil and gas, chemical, power and brewing industries.