The invention relates to an ingot consisting of an aluminium solder alloy having in percentage by weight 4.5%≦Si≦12%; and optionally one or more of the following alloying constituents in percentage by weight: Ti≦0.2%, Fe≦0.8%, Cu≦0.3%, Mn≦0.10%, Mg≦2.0%, Zn_23 0.20%, Cr≦0.05%, with the remainder aluminium and unavoidable impurities, individually at most 0.05 wt %, in total at most 0.15 wt %, wherein boron is additionally provided as an alloying constituent, wherein the boron content is at least 100 ppm and the aluminium alloy is free from primary Si particles having a size of more than 20 μm. The invention further relates to an aluminium alloy product consisting of an aluminium alloy, to an ingot consisting of an aluminium alloy and to a method for producing an aluminium alloy.

A clad material for a cooler is provided by executing production of a tensile strain of 3 to 10% or rolling at a finish rolling ratio of 10 to 25%, and optionally performing a heat treatment for 1 to 8 hours at a temperature within a range from 150 to 400° C., on a clad raw material having a three layer structure of a core material, a first brazing filler metal layer that covers one side (the surface on the side of a cooling water passage) of this core material, and a second brazing filler metal layer that covers the other side (the surface on the opposite side from the cooling water passage). Specific ranges are prescribed for certain properties before and after brazing.

Multilayered brazing sheet material including an aluminium core alloy layer having a first brazing clad layer material on one face of the core layer and a second brazing clad layer material on the other face of the core material, and an inter-layer between the core layer and the first brazing clad layer material, wherein the core layer is 3xxx-series aluminium alloy having, in wt. %, up to 0.4% Si, up to 0.5% Fe, 0.4% to 0.75% Cu, 0.6% to 1.1% Mn, up to 0.04% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.2% Ti, up to 0.15% Zn, balance aluminium and impurities, wherein the first brazing layer and the second brazing layer are 4xxx-series aluminium alloy having 7% to 14% Si and up to 2% Mg, balance aluminium and impurities, and wherein the inter-layer is aluminium alloy of the 1xxx-series alloys.

A clad material includes a core material, a first skin material covering one side of the core material, and a second skin material covering the other side of the core material. The clad material is brazed in a state in which the first and second skin materials overlap each other. The core material is made of an Al alloy containing Mn (0.6 to 1.5 mass %), Ti (0.05 to 0.25 mass %), Cu (less than 0.05 mass %), Zn (less than 0.05 mass %), Fe (0.2 mass % or less), and Si (0.45 mass % or less) (balance: Al and unavoidable impurities). The first skin material is made of an Al alloy containing Si (6.8 to 11.0 mass %) and Zn (0.05 mass % or less) (balance: Al and unavoidable impurities). The second skin material is made of an Al alloy containing Si (4.0 to 6.0 mass %) and Cu (0.5 to 1.0 mass %) (balance: Al and unavoidable impurities).

Disclosed is an aluminum alloy brazing sheet including a core material, a brazing filler material provided on one surface of the core material and formed of an Al—Si based alloy, and a sacrificial anode material provided on the other surface of the core material, the brazing sheet having a thickness of less than 200 μm, wherein the core material includes more than 1.5% by mass and 2.5% or less by mass of Cu, and 0.5 to 2.0% by mass of Mn, with the balance being Al and inevitable impurities, wherein the sacrificial anode material includes 2.0 to 10.0% by mass of Zn, an Mg content in the sacrificial anode material being restricted to 0.10% or less by mass, with the balance being Al and inevitable impurities, and wherein each of the brazing filler material and the sacrificial anode material has a thickness thereof in a range of 15 to 50 μm, and the total of cladding rates of the brazing filler material and sacrificial anode material is 50% or less.

An aluminum alloy foil having superior formability is provided. An aluminum alloy foil, including 0.8 to 2.0 mass % of Fe, 0.05 to 0.2 mass % of Si, and 0.0025 to 0.5 mass % of Cu, with the rest consisting of Al and unavoidable impurities, wherein the aluminum alloy foil has an average crystal grain size of 20 μm or less, and a number of intermetallic compounds existing in the aluminum alloy foil, the intermetallic compounds having a circle equivalent diameter of 1.0 to 5.0 μm, is 1.0×10.sup.4 grains/mm.sup.2 or more, is provided.

An evaporative element for use in a humidifier. In order to reduce the amount of chloride species evaporated into the air with the water, the evaporate element includes a dechlorination agent, such as sulfur compounds, ascorbic acid, sodium ascorbate, or combinations thereof. The dechlorination agent can be applied to the water retaining elements of the evaporate element or to the rigid members used to support the water retaining elements.

An apparatus includes first, second, and third layers. The first layer includes a plurality of flanges. The second layer includes a deformable membrane. The second layer is connected to the first layer along a first major surface of the deformable membrane. The third layer is connected to the second layer along a second major surface of the deformable membrane opposite the first major surface. The third layer includes a first series of internal structures.

The invention relates to a brazable three-layered aluminum composite material having at least three layers with at least two different aluminum alloys, whereby an inner layer of the at least three layers is an aluminum brazing layer made from an aluminum brazing alloy, the other layers are configured as covering layers and include at least one further aluminum alloy, wherein the at least one further aluminum alloy has a higher solidus temperature than the liquidus temperature of the aluminum brazing alloy. The individual covering layers have a thickness which exceeds the thickness of the aluminum brazing layer by at least a factor of 1.5, preferably by a factor of 5. The brazable aluminum composite material is simply structured, has good brazing properties for the production of butt-joint brazing connections, significantly reduces the risk of a ‘burning through’ of brazed-on components and provides sufficient mechanical properties.

A three-layer clad material includes a core material, a cladding material 1, and a cladding material 2, the core material including an aluminum alloy that includes 0.5 to 1.8% of Mn, and either or both of more than 0.05% and less than 0.2% of Cu, and 0.05 to 0.30% of Ti, with the balance being Al and unavoidable impurities, the cladding material 1 including an aluminum alloy that includes 3 to 10% of Si, and 1 to 10% of Zn, with the balance being Al and unavoidable impurities, and the cladding material 2 including an aluminum alloy that includes 3 to 13% of Si, and 0.05% or less of Cu, with the balance being Al and unavoidable impurities, wherein the Si content X (%) in the cladding material 1 and the Si content Y (%) in the cladding material 2 satisfy the value (Y-X) is −1.5 to 9%.