W.Nr.1.4466, X1CrNiMoN25-22-2, S31050, 310MoLN, 25-22-2 urea grade stainless steel

Overview of 725LN (310Lmod, 310MoLN, 1.4466) urea grade stainless steel:

The most important corrosion resistance of 725LN (316Lmod, 1.4466) urea grade stainless steel is that it has a much higher passivation capacity than 316L steel, even when under severe reducing conditions (when the steel needs to be kept in a blunt solution in ammonium carbamate solution) When the amount of oxygen in the state is very low), its passivation film still exists, thereby ensuring that this steel has good corrosion resistance. The test indicates that at 200 ° C, when the amount of oxygen in the ammonium carbamate solution is only 3 ppm, 316L is in an activated state, and its corrosion rate is as high as 40mm / a. For 725LN steel, its corrosion resistance is still the same, with little change. .

The corrosion resistance of 725LN in nitric acid, acetic acid and sulfuric acid is better than that of 304 and 316L steels.

 

Chemical composition of 725LN (310Lmod, 310MoLN, 1.4466) urea grade stainless steel:

C≤	Si≤	Mn≤	P≤	S≤	Cr	Ni	Mo	N
0.03	0.40	2.00	0.030	0.015	24.0 26.0	21.0 23.0	2.00 3.00	0.10 0.16

 

The above data is for reference only. Please contact us for specific requirements.

Special alloy materials commonly used in the chemical industry:

Stainless steel: 253MA, 316L, 353MA, 654SMO, 904L, etc.

Nickel-based alloys: Alloy 31, Alloy 59, Hastelloy B, Hastelloy C, Hastelloy C-276, etc.

Corrosion-resistant alloys: NS112, NS322, NS333, NS335