Alloy 31 / 1.4562
Some features of Alloy 31 are:
Excellent resistance to corrosion and erosion in phosphoric acid media
Excellent resistance to general and localized corrosion in Chloridoxid bleaching plants in paper production
Certification to ISO 15156/MR 0175 to level VI for sour gas applications in the oil and gas industry
Excellent resistance in reducing and oxidizing media, as well as in boiling 67% nitric acid
Excellent corrosion resistance in alkaline and acid halide media
Approval for pressure vessels with operating temperatures from -196 to 550 ° C
Good processability and weldabilityExcellent resistance to sulfuric acid in a highly concentrated form
Material Data Sheet
| Material Designation | 1.4562 |
|---|---|
| Alloy | Alloy 31 |
| EN Material Symbol | X1NiCrMoCu32-28-7 |
| UNS | N08031 |
| Trademark | Nicrofer 3127 hMo |
| ISO | ISO 15156/MR 0175 |
| VdTÜV Data Sheet | 509 |
Main fields of application of alloy 31
Alloy31 is an iron-nickel-chromium-molybdenum alloy with nitrogen addition. The alloy fills the gap between special alloyed austenitic stainless steels and nickel alloys. 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.
Chemical composition of alloy 31
| C | Si | Mn | P | S | Cr |
|---|---|---|---|---|---|
| ≤ % | ≤ % | ≤ % | ≤ % | ≤ % | % |
| 0-0.015 | 0-0.3 | 0-2.0 | 0-0.02 | 0-0.01 | 26.0-28.0 |
| Mo | N | N | Cu | Fe |
|---|---|---|---|---|
| % | % | % | ≤ % | |
| 6.0-7.0 | 30.0-32.0 | 0.15-0.25 | 1.0-1.4 | rest |
Characteristics of alloy 31
| Temperature Range | Material for wet corrosion |
|---|---|
| Density | 8,1 g/cm³ |
| Elongation at break of Alloy 31 | ≥ 40 % |
| ≥ 185 J/cm² at room temperature | ≥ 185 J/cm² at room temperature |
| ≥ 140 J/cm² at -196°C |
Filler metal (for welding with alloy 31)
Welding Rod Nicrofer S 5923 – FM 59 (Material Designation 2.4607)
UNS N06059
Covered electrode 2.4609
UNS W86059
AWS A5.11: ENiCrMo-13
DIN EN ISO 14172:E Ni 6059 (NiCr23Mo16)