Abstract: A corrosion resistant strip is disclosed. The strip comprises a core, and an interlayer adapted to be located between the core and an optional Al—Si based clad. The interlayer has a composition essentially consisting of (in percentages by weight): Si?0.9%, Fe?0.7%, Cu?0.5%, Mn 0.5-1.8%, Mg?0.7%, Zn?4.0%, Ni?1.5%, elements selected from group IVb, Vb, and/or VIb of the periodic table ?0.3% each and ?0.5% in total ?0.05 wt % each and ?0.15% in total, of unavoidable impurity elements, balance Al. The core is more noble than the interlayer after brazing. The interlayer exhibits a volume fraction of a texture component of at least 30%.

Abstract: The present invention provides a method for producing AlMn strip or sheet for making components by brazing, as well as the products obtained by said method. In particular this method is related to fin materials used in heat exchangers. The fins can be delivered with or without a cladding depending on application. Rolling slabs are produced from a melt which contains 0.3-1.5% Si, ?0.5% Fe, ?0.3% Cu, 1.0-2.0% Mn, ?0.5% Mg, ?4.0% Zn, ?0.3% each of elements from group IVb, Vb, or VIb elements, and unavoidable impurity elements, as well as aluminum as the remainder in which the rolling slabs prior to hot rolling are preheated at a preheating temperature of less than 550° C., preferably between 400 and 520° C., more preferably between 450 and 520° C. to control the number and size of dispersoid particles, and the preheated rolling slab is hot rolled into a hot strip. The strip is thereafter cold rolled into a strip with a total reduction of at least 90%, and the cold rolled strip is heat treated to obtain a 0.

Abstract: Method for producing AIMn strip or sheet for making components by brazing and products obtained by said method, in particular fin materials of thin gauge used in heat exchangers. Rolling slabs are produced from a melt with <0.3% Si, ?0.5% Fe, ?0.3% Cu, 1.0-2.0% Mn, ?0.5% Mg, ?4.0% Zn, ?0.5% Ni, ?0.3% each of group IVb, Vb, or Vib elements, and unavoidable impurity elements, as well as aluminum that, prior to hot rolling, are preheated at <550° C. to control the number and size of dispersoid particles, hot rolled into a hot strip, cold rolled into a strip with total reduction of at least 90%, and heat treated to obtain a 0.2% proof stress value that is 50-90% of its proof stress value in the as cold rolled condition and in a range between 100 and 200 MPa. The strip may alternatively be produced by twin-roll strip casting.

Abstract: The present invention provides a method for producing AlMn strip or sheet for making components by brazing, as well as the products obtained by said method. In particular this method is related to fin materials used in heat exchangers. The fins can be delivered with or without a cladding depending on application. Rolling slabs are produced from a melt which contains 0.3-1.5% Si, ?0.5% Fe, ?0.3% Cu, 1.0-2.0% Mn, ?0.5% Mg, ?4.0% Zn, ?0.3% each of elements from group IVb, Vb, or VIb elements, and unavoidable impurity elements, as well as aluminum as the remainder in which the rolling slabs prior to hot rolling are preheated at a preheating temperature of less than 550° C., preferably between 400 and 520° C., more preferably between 450 and 520° C. to control the number and size of dispersoid particles, and the preheated rolling slab is hot rolled into a hot strip. The strip is thereafter cold rolled into a strip with a total reduction of at least 90%, and the cold rolled strip is heat treated to obtain a 0.

Abstract: The invention relates to a method for making a sandwich?material for brazing, comprising the steps of: providing a core layer of a first alloy that contains (by wt. %): 0.5-2.0% Mn, ?1.0% Mg, ?0.2% Si, ?0.3% Ti, ?0.3% Cr, ?0.3% Zr, ?0.2% Cu, ?3% Zn, ?0.2% In, ?0.1% Sn and ?0.7% (Fe+Ni), the rest Al and ?0.05% of each of unavoidable impurities; providing a barrier layer of a second alloy that contains (by wt. %): ?0.2% Mn+Cr, ?1.0% Mg, 1.6-5% Si, ?0.3% Ti, ?0.2% Zr, ?0.2% Cu, ?3% Zn, ?0.2% In, ?0.1% Sn and ?1.5% (Fe+Ni), the rest Al and ?0.05% of each of unavoidable impurities; rolling the layers together so that they adhere and form a sandwich material; heat treating the sandwich material at a predetermined temperature and for a predetermined time so that the Si-content is equalized to 0.4-1% in both core layer and barrier layer; rolling the sandwich material to a final thickness.

Abstract: A corrosion resistant strip is disclosed. The strip comprises a core, and an interlayer adapted to be located between the core and an optional Al—Si based clad. The interlayer has a composition essentially consisting of (in percentages by weight): Si?0.9%, Fe?0.7%, Cu?0.5%, Mn0.5-1.8%, Mg?0.7%, Zn?4.0%, Ni?1.5%, elements selected from group IVb, Vb, and/or VIb of the periodic table ?0.3% each and ?0.5% in total ?0.05 wt % each and ?0.15% in total, of unavoidable impurity elements, balance Al. The core is more noble than the interlayer after brazing. The interlayer exhibits a volume fraction of a texture component of at least 30%.

Abstract: Method for producing AIMn strip or sheet for making components by brazing and products obtained by said method, in particular fin materials of thin gauge used in heat exchangers. Rolling slabs are produced from a melt with <0.3% Si, ?0.5% Fe, ?0.3% Cu, 1.0-2.0% Mn, ?0.5% Mg, ?4.0% Zn, ?0.5% Ni, ?0.3% each of group IVb, Vb, or Vib elements, and unavoidable impurity elements, as well as aluminium that, prior to hot rolling, are preheated at <550° C. to control the number and size of dispersoid particles, hot rolled into a hot strip, cold rolled into a strip with total reduction of at least 90%, and heat treated to obtain a 0.2% proof stress value that is 50-90% of its proof stress value in the as cold rolled condition and in a range between 100 and 200 MPa. The strip may alternatively be produced by twin-roll strip casting.

Abstract: A method for making a sandwich material. A core layer of a first alloy is provided. The first alloy includes by wt. %: 0.5-2.0% Mn, ?1.0% Mg, ?0.2% Si, ?0.3% Ti, ?0.3% Cr, ?0.3% Zr, ?0.2% Cu, ?3% Zn, ?0.2% In, ?0.1% Sn and ?0.7% (Fe+Ni), the rest Al and ?0.05% of each of unavoidable contaminants. A barrier layer of a second alloy is provided. The second alloy includes by wt. %: ?0.2% Mn+Cr, ?1.0% Mg, 1.6-5% Si, ?0.3% Ti, ?0.2% Zr, ?0.2% Cu, ?3% Zn, ?0.2% In, ?0.1% Sn and ?1.5% (Fe+Ni), the rest Al and ?0.05% of each of unavoidable contaminants. The core and barrier layers are rolled together so that they adhere and form a sandwich material. The sandwich material is heat treated so that the Si-content is equalized to 0.4-1% in the core and barrier layers. The sandwich material is rolled to a final thickness.

Abstract: An aluminium alloy brazing sheet comprising: a core material made of an aluminium alloy consisting of ?0.1 wt % Si, most preferably ?0.06 wt % Si, ?0.35 wt % Mg, from 1.0 to 2.0 wt %, preferably 1.4 to 1.8 wt % Mn, from 0.2 to 1.0, preferably 0.6 to 1.0 wt % Cu, ?0.7 wt % Fe, ?0.3 wt % each of Zr, Ti, Ni, Hf, V, Cr, In, Sn and ?0.5 wt % total of Zr, Ti, Ni, Hf, V, Cr, In, Sn, the remainder being Al and unavoidable impurities; and a waterside cladding material clad on at least one side of the core material, said cladding material being made of an aluminium alloy having a potential lower than that of said core material and consisting essentially of 0.5-1.5 wt % of Si, 1.0 to 2.0 wt % preferably 1.4-1.8 wt % of Mn, ?0.15 wt % Mg, ?0.1% Cu, ?0.7 wt % Fe, ?1.4 wt %, preferably ?1.1 wt %, most preferably ?0.4 wt % Zn, ?0.3 wt % each of Zr, Ti, Ni, Hf, V, Cr, In, Sn and ?0.

Abstract: The present invention provides a method for producing AlMn strip or sheet for making components by brazing, as well as the products obtained by said method. In particular this method is related to fin materials used in heat exchangers. The fins can be delivered with or without a cladding depending on application. Rolling slabs are produced from a melt which contains 0.3-1.5% Si, ?0.5% Fe, ?0.3% Cu, 1.0-2.0% Mn, ?0.5% Mg, ?4.0% Zn, ?0.3% each of elements from group IVb, Vb, or VIb elements, and unavoidable impurity elements, as well as aluminium as the remainder in which the rolling slabs prior to hot rolling are preheated at a preheating temperature of less than 550° C., preferably between 400 and 520° C., more preferably between 450 and 520° C. to control the number and size of dispersoid particles, and the preheated rolling slab is hot rolled into a hot strip. The strip is thereafter cold rolled into a strip with a total reduction of at least 90%, and the cold rolled strip is heat treated to obtain a 0.

Abstract: The present invention provides a method for producing AlMn strip or sheet for making components by brazing, as well as the products obtained by said method. In particular this method is related to fin materials used in heat exchangers. The fins can be delivered with or without a cladding depending on application. Rolling slabs are produced from a melt which contains 0.3-1.5% Si, ?0.5% Fe, ?0.3% Cu, 1.0-2.0% Mn, ?0.5% Mg, ?4.0% Zn, ?0.3% each of elements from group IVb, Vb, or VIb elements, and unavoidable impurity elements, as well as aluminium as the remainder in which the rolling slabs prior to hot rolling are preheated at a preheating temperature of less than 550° C., preferably between 400 and 520° C., more preferably between 450 and 520° C. to control the number and size of dispersoid particles, and the preheated rolling slab is hot rolled into a hot strip. The strip is thereafter cold rolled into a strip with a total reduction of at least 90%, and the cold rolled strip is heat treated to obtain a 0.