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ASTM A262 Stainless Steel Round Bar 725LN UREA Grade 25-22-2 CR NI MO UNS S31050

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ASTM A262 Stainless Steel Round Bar 725LN UREA Grade 25-22-2 CR NI MO UNS S31050

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Brand Name : MITTEL TISCO BAO STEEL

Model Number : 725LN

Certification : ISO

Place of Origin : China

MOQ : 100KGS

Price : 5.5 USD/KG

Payment Terms : L/C, T/T

Supply Ability : 50000KGS

Delivery Time : 7 Days

Packaging Details : Wooden Box

Type : Round

Application : Construction,decoration,Industry,Mechineal

Standard : DIN,ASTM,AISI,JIS,EN

Grade : 725LN 310MOD

Shape : Round

Special use : Valve Steels

Dimensions : 5.5mm-500mm

Surface : bright,Polished,black

Technique : Cold drawn&hot rolled

Packing : Standard Seaworthy Package

Sample : Available

Price term : CIF CFR FOB Ex-Work

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IGC Practice ASTM A262 (Huey Test) Stainless Steel Material 725LN UREA Grade 25-22-2(CR,NI,MO) UNS S31050

1.4466

  • UNS S31050
  • UREA 25.22.2
  • 310MoLN

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.

Mechanical Properties

Tensile strength: 540-740 N/mm²
Yield strength 0,2% : 250 ≥ N/mm²
Elongation: 35/30 ≥ %
Hardness Brinell: 240 ≤ HB

Chemical Composition

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

Element Content (%)
Iron, Fe Balance
Chromium, Cr 24-26
Nickel, Ni 21-23
Molybdenum, Mo 2-2.50
Manganese, Mn ≤ 2
Nitrogen, N 0.10-0.16
Silicon, Si ≤ 0.70
Phosphorous, P 0.025
Carbon, C ≤ 0.020
Sulfur, S ≤ 0.010

Heat Treatment

heat treatment (1140°-1180°C –2084-2156°F) and water quenching

The corrosion resistance properties are enhanced thanks to the low carbon level, low silicon level and complementary additions of nitrogen.

Typical maximum corrosion results required following different specifications for the 25.22.2 grade after 5 periods of 48 h following ASTM A 262-C practice are:
maximum general corrosion: 1,6 μm/48 h or 65 mg/dm² per hour with a maximum depth of microcracks of 100 μm in the long direction of rolling.

Marking

All material will be marked as follow:

  • Manufacturer’s name
  • Material grade
  • Size
  • Heat Number

Certification

Material will be delivered with certificate EN 10204 3.1

Other UREA grades

EURONORM/DIN WERKSTOFF NR. AISI UNS BRAND NAME

ASTM A262 Stainless Steel Round Bar 725LN UREA Grade 25-22-2 CR NI MO UNS S31050ASTM A262 Stainless Steel Round Bar 725LN UREA Grade 25-22-2 CR NI MO UNS S31050


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ASTM A262 Stainless Steel Round Bar

      

UNS S31050 Stainless Steel Round Bar

      
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