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- Alloy 31 (UNS N08031) (3)
- Alloy 59 (UNS N06059) (3)
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Eingeladener Vortrag
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A global transition towards more sustainable, affordable and reliable energy systems is being stimulated by the Paris Agreement and the United Nation's 2030 Agenda for Sustainable Development. This poses a challenge for the corrosion industry, as building climate‐resilient energy systems and infrastructures brings with it a long‐term direction, so as a result the long‐term behaviour of structural materials (mainly metals and alloys) becomes a major prospect. With this in mind “Corrosion Challenges Towards a Sustainable Society” presents a series of cases showing the importance of corrosion protection of metals and alloys in the development of energy production to further understand the science of corrosion, and bring the need for research and the consequences of corrosion into public and political focus. This includes emphasis on the limitation of greenhouse gas emissions, on the lifetime of infrastructures, implants, cultural heritage artefacts, and a variety of other topics.
Une transition mondiale vers des systèmes énergétiques plus durables, abordables et fiables a été initiée par l’accord de Paris et l’Agenda 2030 des Nations unies pour un développement durable. Il s’agit là d’un défi industriel majeur car les systèmes et infrastructures énergétiques résilients au changement climatique exigent de se positionner pour le long terme. Se pencher sur le comportement dans la durée des matériaux structurels - principalement des métaux et des alliages - s’impose alors comme une nécessité. Dans cette optique, « La corrosion : un défi pour une société durable »présente une série de cas montrant l’importance de la tenue à la corrosion et de la protection anticorrosion des métaux et des alliages pour le développement de systèmes durables, économiques et fiables de production d’énergie.
Use of Corrosion Resistant High-Alloyed Metallic Materials for Transport Tanks of Dangerous Goods
(2005)
In Germany the BAM-List Requirements for Tanks for the Transport of Dangerous
Goods is the basis for substance-related prototype approvals for tank containers designed for
the carriage of dangerous goods. Such approval is undertaken by the Federal Institute for
Materials Research and Testing (BAM). Compatibility evaluations of selected metallic
material groups as well as of polymeric gasket and lining materials under the influence of
dangerous goods and water-polluting substances are published in section 5 of the BAM-List.
According to the relevant regulations for rail, road and sea transportation a compulsory
internal inspection after certain intervals is required. The required corrosion resistance
depends on the length of the inspection interval.
There is a large number of dangerous goods with a high corrosivity to metals, where the standard
steels are not corrosion resistant. Chemical companies, transportation providers and tank
producers need tanks made of corrosion-resistant materials in order to protect the tank shell
and prevent contamination of high-value cargo as well as the environment. One solution is to
line the tank with a polymeric material, an alternative solution to corrosion problems is the
application of high-alloyed materials.
Only a narrow limited number of corrosion test results of these high-alloyed materials under
the influence of corrosive dangerous goods are available. In order to change this situation and
include the superaustenitic steels X1NiCrMoCuN25-20-7 (Alloy 926), X1NiCrMoCu32-28-7
(Alloy 31) and the nickel-based alloy NiCr23Mo16Al (Alloy 59) in the BAM-List, BAM,
IKS Dresden and ThyssenKrupp VDM started an comprehensive test program with welded
specimens made. The program comprises corrosion resistance evaluations of the high-alloyed
materials in substances representing 12 major groups of corrosive dangerous goods (e.g.
inorganic halogenides, organic acidic halogenides, halogenic carbonic acids, chlorosilanes,
chlorates, perchlorates, chlorites, hypochlorites and hydrogen sulphates).
The test results, presented in this paper, will be included in the upcoming 8th edition of the
BAM-List and therefore available for the costumer.
Evaluation of the resistance of alloy 31 and alloy 59 for the transport of mixed acids in tanks
(2007)
To set up recommendations on how to define “reasonable minimum composition thresholds” for CO2 streams to access CO2 pipeline networks, we investigated potential impacts of CO2 streams with different and temporally variable compositions and mass flow rates along the CCS chain. All investigations were based on a generic “CCS cluster scenario” in which CO2 streams captured from a spatial cluster of eleven emitters (seven fossil-fired power plants, two cement plants, one refinery and one steel mill) are collected in a regional pipeline network. The resulting CO2 stream (19.78 Mio t impure CO2 per year) is transported in a trunk line (onshore and offshore) and injected into five generic replicate storage structures (Buntsandstein saline aquifers) offshore. Experimental investigations and modeling of selected impacts revealed beneficial as well as adverse impacts of different impurities and their combinations. Overall, no fundamental technical obstacles for transporting, injecting and storing CO2 streams of the considered variable compositions and mass flow rates were observed. We recommend to define minimum composition thresholds for each specific CCS project through limiting
i) the overall CO2 content,
ii) maximum contents of relevant impurities or elements,
iii) acceptable variability of concentrations of critical impurities, and defining impurity combinations to be avoided.