Alloy 31 is an iron-nickel-chromium-molybdenum alloy with nitrogen addition. It has a pitting resistance in high chloride environments between those of super-austenitic stainless steels and nickel alloys. The Nickel-based alloy steel Alloy 31 has very good corrosion resistance in mixed acid and high chloride environments. The material is approved in ISO 15156/ NACE MR0175 to test level VI for sour gas service
Alloy31 alloy Chemical composition:
Alloy |
Ni |
Cr |
Fe |
Mo |
N |
C |
Mn |
Si |
S |
Cu |
P |
Min |
30 |
26 |
balance |
6 |
0.15 |
1 |
|
|
|
|
|
Max |
32 |
28 |
7 |
0.2 |
0.015 |
2 |
0.3 |
0.01 |
1.4 |
0.02 |
|
The mechanical properties of Alloy 31 at room temperature, the minimum value:
Alloy |
Tensile strength Rm N/mm2 |
Yield strength Rp0.2 N/mm2 |
Elongation A5 % |
Solid solution treatment |
650 |
350 |
35 |
Main fields of application of Alloy 31
Alloy 31 is an iron-nickel-chromium-molybdenum alloy with nitrogen addition. The alloy fills the gap between special alloyed austenitic stainless steels and nickel alloys. Nickel-based alloy steel Alloy 31 has been proven especially in the chemical and petrochemical industry, in ore extractors, environmental and marine engineering as well as in oil and gas production.
Alloy 31 alloy steel Products have common form and status of delivery SteelAlloy 31 Pipe: annealing pickling state Alloy 31 Pipe fittings: annealing pickling, rolling sand, sand blasting, etcAlloy 31 Bar, forging, welding wire, seamless pipe, flange, steel belt, etc
We can supply Nickel-based alloy steel Alloy 31 plates or sheets, tubes, flanges, forged or die-cut rings and round blanks, elbows, T-fittings, reductions, screws, nuts or washers according to your request. According to your individual wishes, we are able to cut our material with our plasma- or water jet cutter. If you need Alloy 31 ,please contact us by email [email protected] ,we will do our best to help you!
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