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US 2020/0048741 A1Published application
Use of a nickel-chromium-molybdenum alloy
AssigneeVDM Metals International GmbH
InventorsMartin WOLF, Rainer BEHRENS
Life of this patent
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Abstract
The invention relates to the use of an alloy having the composition (in mass %) of: Cr 20.0 to 23.0%, Mo 18.5 to 21.05%, Fe≤1.5%, Mn≤0.5%, Si≤0.1%, Co≤0.3%, W≤0.3%, Cu≤0.5%, Al≤0.4%, C≤0.01%, P≤0.015%, S≤0.01%, N 0.02 to 0.15%, if necessary V≤0.3%, Nb≤0.2%, Ti≤0.02%, the rest Ni and further smelting-related impurities as cladding material in the field of thermal reprocessing systems and substitute-material combustion systems.
Claims7
1:
- Use of an alloy having the composition (in mass %) of
- Cr 20.0-23.0%
- Mo 18.5-21.05%
- Fe≤1.5%
- Mn≤0.5%
- Si≤0.1%
- Co≤0.3%
- W≤0.3%
- Cu≤0.5%
- Al≤0.4%
- C≤0.01%
- P≤0.015%
- S≤0.01%
- N 0.02-0.15%
- if necessary
- V≤0.3%
- Nb≤0.2%
- Ti≤0.02%
- Ni the rest as well as smelting-related impurities
- as cladding material in the field of thermal reprocessing systems and substitute-material combustion systems.
17 more elements
2:
- Use according to claim 1 with the following composition (in mass %):
- Cr>20.0-<23.0%
- Mo>18.5-<21.0%
- Fe>0.1-<1.0%
- Mn>0.05-<0.4%
- Si>0.001-<0.10%
- Co≤0.2%
- W≤0.25%
- Cu≤0.4%
- Al≤0.3%
- C≤0.05%
- P≤0.015%
- S≤0.005%
- N 0.04-<0.1%
- if necessary
- V≤0.25%
- Nb≤0.2%
- Ti≤0.02%
- Ni the rest as well as smelting-related impurities.
16 more elements
3:
- Use according to claim 1, wherein the cladding material is used in the field of heat-exchanger tubes of the waste incineration system.
4:
- Use according to claim 1, wherein the cladding material after application has an offset yield strength Rp 0.2 of at least 600 MPa in the operationally stressed condition.
5:
- Use according to claim 1, wherein the cladding material, as a deposition-welding material, has an offset yield strength Rp 0.2 (MPa) above 600, especially above 640.
6:
- Use according to claim 1, wherein the cladding material, as a deposition-welding material, has a tensile strength Rm (MPa) above 800, especially above 840.
7:
- Use according to claim 1, wherein the cladding material is used for repairs.