Abstract

The invention relates to the use of an alloy having the composition (in mass per cent) C max. 0.02%, S max. 0.01%, N max. 0.03%, Cr 20.0 - 23.0%, Ni 39.0 - 44.0%, Mn 0.4 - < 1.0%, Si 0.1 - < 0.5%, Mo > 4.0 - < 7.0%, Nb max. 0.15%, Cu > 1.5 - < 2.5%, Al 0.05 - < 0.3%, Co max. 0.5%, B 0.001 - < 0.005%, Mg 0.005 - < 0.015%, remainder Fe and impurities resulting from fusion, which is further processed via the molten phase as an alloyed solid in the form of a wire, strip, rod or powder and is used in the oil, gas and chemical industry in wet corrosion applications.

IPC Classes  ?

• C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
• B22F 10/00 - Additive manufacturing of workpieces or articles from metallic powder
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B23K 5/14 - Gas flame welding taking account of the properties of the material to be welded of non-ferrous metals
• B23K 5/18 - Gas flame welding for purposes other than joining parts, e.g. built-up welding
• B23K 9/00 - Arc welding or cutting
• B23K 9/04 - Welding for other purposes than joining, e.g. built-up welding
• B23K 10/02 - Plasma welding
• B23K 25/00 - Slag welding, i.e. using a heated layer or mass of powder, slag, or the like in contact with the material to be joined
• B23K 35/02 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
• B23K 35/30 - Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
• C22C 30/00 - Alloys containing less than 50% by weight of each constituent
• C22C 33/02 - Making ferrous alloys by powder metallurgy
• C22C 38/00 - Ferrous alloys, e.g. steel alloys
• C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
• C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
• C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
• C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
• C22C 38/54 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
• C22C 38/52 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt

Abstract

The invention relates to the use of an alloy with the composition (in wt.%) Ni 33.5 - 35.0%, Cr 26.0 - 28.0%, Mo 6.0 - 7.0%, Fe < 33.5%, Mn 1.0 - 4.0%, Si < 0.1%, Cu 0.5 - 1.5%, AI 0.01% - 0.3%, C < 0.01%, P < 0.015%, S < 0.01%, N 0.1 - 0.25%, B 0.001 - 0.004%, sE > 0 - 1.0%, if required W <0.2%, Co <0.5%, Nb < 0.2%, Ti < 0.1%, and impurities from the melting process, as a welding-plating material in the area of thermal processing systems, in particular rubbish, biomass, sewage sludge and substitute fuel systems, wherein, after the build-up welding, in the operationally stressed state in a fully austenitic structural matrix, the welding-plating material forms a sigma phase and other hard particles in the weld material microstructure in a targeted manner.

IPC Classes  ?

• B23K 35/30 - Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
• B23K 9/04 - Welding for other purposes than joining, e.g. built-up welding
• B23K 35/02 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
• C22C 30/02 - Alloys containing less than 50% by weight of each constituent containing copper

Abstract

The invention relates to a nickel alloy comprising (in wt.%) Ni 50 - 55%, Cr 17 - 21%, Mo > 0 - 9%, W 0 - 9%, Nb 1 - 5.7%, Ta > 0 - 4.7%, Ti 0.1 - 3.0%, AI 0.4 - 4.0%, Co max. 3.0%, Mn max. 0.35%, Si max. 0.35%, Cu max. 0.23%, C 0.001 - 0.045%, S max. 0.01%, P 0.001 - 0.02%, B 0.001 - 0.01%, the remainder consisting of Fe and the conventional process-related impurities, wherein the following relations are provided: Nb + Ta 1 - 5.7% (1), AI + Ti > 1.2- 5% (2), Mo + W 3 - 9% (3), where Nb, Ta, Al and Ti are the concentration of the elements in question in wt.%.

IPC Classes  ?

• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• B22F 9/08 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
• C22B 9/16 - Remelting metals
• C22B 9/18 - Electroslag remelting
• C22B 9/20 - Arc remelting
• C22C 1/02 - Making non-ferrous alloys by melting
• C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
• C22C 38/26 - Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
• C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
• C22C 38/32 - Ferrous alloys, e.g. steel alloys containing chromium with boron
• C22C 38/40 - Ferrous alloys, e.g. steel alloys containing chromium with nickel
• C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon