Stainless steel grade 310 MoLN Duplex S31050 Duplex Stainless Steel Fasteners

1.Introduction

Stainless steel grade 310 MoLN is a fully austenitic stainless steel that does not have intermetallic phases such as intergranular carbide precipitations. The 310MoLN steel grade has an optimized chemical composition designed specifically for applications in urea plants. The nitrogen in the chemical composition helps to stabilize and strengthen the austenitic phase. This material provides improved corrosion-resistance in urea carbamate environments such as high-pressure strippers.

The following datasheet provides an overview of stainless steel grade 310 MoLN.

2.Chemical Composition

The chemical composition of stainless steel grade 310 MoLN is outlined in the following table.

3.Mechanical Properties

The mechanical properties of stainless steel grade 310 MoLN are displayed in the following table.

4.UREA 25.22.2

UREA 25.22.2 chemical composition has been optimised for specific uses in Urea plants. It is a 310L modified austenitic stainless steel with low carbon, low silicon and high nitrogen additions in order to stabilize and strengthen the austenitic phase. The alloy is particularly designed for improved corrosion resistance properties in urea carbonate environments including strippers. The grade is also well designed for resistance in wet corrosive conditions due to its high contents of chromium, molybdenum and nitrogen (PREN > 33). UREA 25.22.2 is designed for the fabrication of lining interiors in Urea units or complementary products (pipes, fittings…). The grade can be used for urea strippers.

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