310MoLN (UNS S31050 / W.Nr. 1.4466)

310MoLN (UNS S31050 / W.Nr. 1.4466) stainless steel grade is a fully austenitic stainless steel that does not have intermetallic phases such as intergranular carbide precipitations. For applications in urea plants 310MoLN steel grade has a specifically designed optimized chemical composition. To stabilize and strengthen the austenitic phase the nitrogen in the chemical composition helps. 310 MoLN, material gives excellent corrosion-resistance in urea carbamate environments such as high-pressure strippers. Among wrought austenitic stainless steels it has a fairly high base cost. And it has a fairly high embodied energy and a fairly low ductility.

Equivalent Grades

Trademark	GB	GOST	ASTM	UNS	DIN	W.Nr.	NF	BS	JIS	SS
Uranus 25 22 2 2RE69 3R60U.G Cronifer 25.25.LCN 725LN Ultra 725LN	022Cr25Ni22Mo2N	02Х25Н22АМ2	AISI 310MoLN	S31050	X1CrNiMoN 25-22-2	1.4466	Z1 CND 25.22.Az	X1CrNiMoN 25-22-2	–	–

Chemical Composition, %

Alloy	C	Si	Mn	P	S	Cr	Ni	Mo	N	Fe
310MoLN	≤0.02	≤0.70	≤2.00	≤0.025	≤0.010	24.0-26.0	21.0-23.0	2.0-2.5	0.10-0.16	Bal

Typical Physical and Mechanical Properties (RT, Annealed)

Density, g/cm3	Melting Point, ℃	Tensile Strength, MPa	Yield Strength, MPa	ELongation, %	Hardness, HB
7.9	1030-1180	540-740	≥250	≥35	/

Available Products and Specifications

Rod, Bar, Wire and Forgings	ASTM A182/ASME SA182
Plate, Sheet and Strip	ASTM A240/ASME SA240, ASTM A959
Pipe and Tube	ASTM A213/ASME SA213, ASTM A312/ASME SA312
Welding Product	–
Others	ASTM B366/ASME SB366