Alloy 59
Alloy 59 ( material number 2.4605) is a chemically resistant nickel-chromium-molybdenum alloy belonging to the group of nickel alloys . It is mainly used in the chemical industry, paper industry and in flue gas desulphurisation systems . The UNS number is N06059. The material is also marketed under the brand name Nicrofer 5923hMo .
development
Alloy 59 was developed by Thyssenkrupp VDM (now VDM Metals ) in the 1990s. Formally, the alloy belongs to the group of "C alloys". The classics of the C alloys go back to developments of the 1930s, Alloy C. Further developments in this group include Alloy C-276 (~ 1960), Alloy C4 (~ 1970) and Alloy C22 (~ 1980).
Since Alloy 59 was patent pending, American competitors brought similar alloys (Haynes Alloy C2000 and Special Metals Alloy 686) onto the market.
The ThyssenKrupp patent has now expired and Alloy 59 is now also being produced by other manufacturers.
Product forms
Sheets, plates, flanges, rods, rods, pipes, pipe accessories and others are made from the alloy. Alloy 59 is included in the BAM list ( dangerous goods transport ).
Alloy 59 is used in environmental technology, the chemical industry (chemical processes with oxidizing and reducing media, resistance to moist chlorine gas) and in waste incineration plants.
Chemical composition of Alloy 59
| C ≤ 0.01% | Si ≤ 0.10% | Mn ≤ 0.50% | P ≤ 0.025% | S ≤ 0.015% | Cr 22.0 - 24.0% |
| Mon 15.0 - 16.0% | Al 0.10-0.40% | Co ≤ 0.30% | Cu ≤ 0.50% | Fe ≤ 1.50% | Ni% remainder |
Special properties of Alloy 59
| density | 8.6 kg / dm³ |
| Elongation at break at 20 ° C | 30% |
| ISO-V notched impact strength | ≥ 225 J / cm² at room temperature |
| ≥ 200 J / cm² at −196 ° C |
Alloy 59 is a wet corrosion material. It has little susceptibility to intergranular corrosion .
It has the highest possible ISO 15156 / NACE MR0175 Class 7 for sour gas applications in the oil and gas industry. The material is described in VdTÜV data sheet 505.
Welding filler metals
Welding rod (TIG), welding wire and wire electrode 2.4607, covered rod electrode 2.4609
Individual evidence
- ↑ DC Agarwal: A NEW Ni-Cr-Mo ALLOY 59, UNS N06059, FOR PROVIDING COST-EFFECTIVE / RELIABLE SOLUTIONS TO VARIOUS MAINTENANCE AND CORROSION PROBLEMS IN NAVAL APPLICATIONS. ( Memento from May 31, 2014 in the Internet Archive ) (PDF; 263 kB)
- ^ Margit Weltschev, Dr. Ralph Bäßler: Resistance of high-alloy special stainless steels and nickel-based alloys as tank wall materials for containers for the transport of dangerous goods and water-polluting substances. ( Memento of the original from June 16, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 6.6 MB)
- ↑ Material Data Sheet VDM Metals (PDF; 458 kB)
- ↑ Homepage , brief overview.
