# US 2013/0157080 A1 · Clad material

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- Number: US 2013/0157080 A1
- Document ID: US20130157080A1
- Status: Published application
- Kind: A1
- Application number: 13/709,298
- Filed: 2012-12-10
- Published: 2013-06-20
- Earliest claimed: 2011-12-14
- Assignees: Showa Denko K.K.
- Inventors: Takashi Terada; Kazuyuki Takahashi; Yohei Ikawa
- Web page: https://patentgrep.com/patent/US20130157080A1

## CPC

- B32B 15/016: {all layers being formed of aluminium or aluminium alloys}
- B23K 35/0238: {layered}
- B23K 35/286: {Al as the principal constituent}
- B23K 35/288: {with Sn or Zn}
- C22C 21/00: Alloys based on aluminium
- C22C 21/02: with silicon as the next major constituent
- F28D 1/05375: {with particular pattern of flow, e.g. change of flow direction (F28D1/05391 takes precedence)}
- F28F 9/02: Header boxes; End plates
- F28F 19/00: Preventing the formation of deposits or corrosion, e.g. by using filters {or scrapers}
- F28F 21/084: {from aluminium or aluminium alloys}
- F28F 21/089: {Coatings, claddings or bonding layers made from metals or metal alloys (F28F19/06 takes precedence)}
- Y10T 428/12764: Next to Al-base component
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

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 core material is made of an Al alloy containing Cu (0.05 to 0.2 mass %), Mn (1.0 to 1.5 mass %), Zn (0.3 to 1.0 mass %), Ti (0.05 to 0.25 mass %), Fe (0.2 mass % or less), and Si (0.2 mass % or less), the balance being 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), the balance being 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 %), the balance being Al and unavoidable impurities.

## Claims

### Claim 1

A clad material which is composed of 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 being brazed in a state in which the first skin material and the second skin material overlap each other, wherein
the core material is made of an Al alloy containing Cu in an amount of 0.05 to 0.2 mass %, Mn in an amount of 1.0 to 1.5 mass %, Zn in an amount of 0.3 to 1.0 mass %, Ti in an amount of 0.05 to 0.25 mass %, Fe in an amount of 0.2 mass % or less, and Si in an amount of 0.2 mass % or less, the balance being Al and unavoidable impurities;
the first skin material is made of an Al alloy containing Si in an amount of 6.8 to 11.0 mass % and Zn in an amount of 0.05 mass % or less, the balance being Al and unavoidable impurities; and
the second skin material is made of an Al alloy containing Si in an amount of 4.0 to 6.0 mass % and Cu in an amount of 0.5 to 1.0 mass %, the balance being Al and unavoidable impurities.