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| Material Number - alloy |
thickness (mm) - t |
min. width (mm) - B |
Location | Origin | Surface Type |
Total Quantity (kg) |
Min deliverable quantity (kg) - lot |
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| 2.4858 - 825 | 0.50 | 1250.00 | IN, 400004 | JP | 2B | 3000.00 | 300.00 | €25.00 / kg Negotiate |
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| 2.4858 - 825 | 0.20 | 5.00 | IN, 400004 | US | 2B | 1000.00 | 100.00 | €39.50 / kg Negotiate |
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Alloy 825 / 2.4858
Alloy 825 is a titanium-stabilized, fully austenitic nickel-iron-chromium alloy with additions of copper and molybdenum. Alloy 825 is characterized by:
Material Data Sheet
| Material Designation | 2.4858 |
| Alloy | Alloy 825 |
| EN Material Symbol | NiCr21Mo |
| UNS | N 08825 |
| VdTÜV Datasheet | 432/1 |
| ISO | NiFe30Cr21Mo3 |
Main fields of application of alloy 825
Typical examples for the use of 825 are as follows:
- chemical plants
- Air-cooled heat exchangers in LNG process (LPG)
- Heat exchangers, evaporators, scrubbers, fork tubes, in the phosphoric acid production
- Components in sulfuric acid pickling lines, such as heating coils, tanks, boilers, baskets and chains
- Fuel element for a variety of media, such as dissolver sulfuric and nitric acid, sodium hydroxide, etc., which are used in the recycling process
- Food preparation
- seawater-cooled heat exchangers, offshore pipelines, pipes and parts in natural gas operation
Chemical composition of alloy 825
| C | Si | Mn | P | S | Cr | Mo |
| % | ≤ % | ≤ % | ≤ % | ≤ % | % | % |
| 0.025 | 0.5 | 1.0 | 0.02 | 0.015 | 19.5-23.5 | 2.5-3.5 |
Characteristics of alloy 825
| Temperature Range | up to 550°C |
| Density | 8.1 g/cm³ |
| Melting Range | 1370°C – 1400°C |
| Elongation at break of Alloy 825 | 30 % |
| ISO-V notch impact toughness | ≥ 150 J/cm² at room temperature, lengthwise (only bars and forgings) |
| ≥ 100 J/cm² at room temperature, across |
Filler metal (for welding with alloy 825)
Alloy 825 can be welded by all conventional methods.
The following welding is recommended:
WIG/MIG2.4831
SG- NiCr21Mo9NbFilter Rod2.4621
EL- NiCr20Mo9Nb
