Aluminum alloy clad material for heat exchanger

Patent metadata

Field	Value
Publication number	US-12552135-B2
Application number	US-202218700106-A
Country	US
Kind code	B2
Filing date	Sep 26, 2022
Priority date	Oct 11, 2021
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

An aluminum alloy clad material for a heat exchanger comprises a cladding material on one side surface or both side surfaces of a core material, wherein the core material comprises: Mn at 0.50 to 1.80 mass %; and one or more types selected from Cu at more than 0.05 mass % and less than 0.20 mass % and Ti at 0.05 to 0.30 mass % with the balance being Al and inevitable impurities, and the cladding material comprises: Si at 3.00 to 10.00 mass %; Fe at 0.30 to 0.80 mass %; Mn at 0.30 to 1.80 mass %; and Zn at 1.00 to 5.00 mass % with the balance being Al and inevitable impurities, in which the total content of the Fe and the Mn is 2.10 mass % or less.

First claim

The invention claimed is:

1 . An aluminum alloy clad material for a heat exchanger comprising a cladding material on one side surface or both side surfaces of a core material, wherein
the core material comprises: Mn at 0.50 to 1.80 mass %; Cu at more than 0.05 mass % and less than 0.20 mass % and Ti at 0.05 to 0.30 mass % with the balance being Al and inevitable impurities, and the cladding material comprises: Si at 3.00 to 7.00 mass %; Fe at 0.30 to 0.80 mass %; Mn at 0.30 to 1.80 mass %; and Zn at 1.00 to 5.00 mass % with the balance being Al and inevitable impurities, in which the total content of the Fe and the Mn is 2.10 mass % or less, wherein a cladding-material residual ratio is 50 to 98 wt % in a heating test in which a temperature is raised at an average temperature-rising rate of 50° C./min from room temperature to 600° C. and kept at 600° C. for 3 minutes, and wherein the thickness of the aluminum alloy clad material is 0.15 to 0.50 mm.

2 . The aluminum alloy clad material for a heat exchanger according to claim 1 , wherein the core material further comprises one or more types selected from Cr at 0.300 mass % or less (including zero) and Zr at 0.300 mass % or less (including zero).

3 . The aluminum alloy clad material for a heat exchanger according to claim 1 , wherein the core material further comprises Mg at 0.500 mass % or less (including zero).

4 . The aluminum alloy clad material for a heat exchanger according to claim 1 , wherein the core material further comprises one or more types selected from Si at 0.8 mass % or less (including zero) and Fe at 0.7 mass % or less (including zero).

5 . The aluminum alloy clad material for a heat exchanger according to claim 1 , wherein the cladding material further comprises Mg at 0.500 mass % or less (including zero).

6 . The aluminum alloy clad material for a heat exchanger according to claim 1 , wherein the cladding material further comprises Sr at 0.050 mass % or less (including zero).

7 . The aluminum alloy clad material for a heat exchanger according to claim 1 , wherein the cladding material further comprises one or more types selected from Cr at 0.300 mass % or less (including zero) and Zr at 0.300 mass % or less (including zero).

8 . The aluminum alloy clad material for a heat exchanger according to claim 1 , wherein the cladding material further comprises one or more types selected from In at 0.100 mass % or less (including zero) and Sn at 0.100 mass % or less (including zero).

Assignees

• Uacj Corp

Inventors

• Nakamura Shinichi
• Shoji Tomohiro
• TOMORI Ryo

Classifications

• B23K35/22 Primary

  characterised by the composition or nature of the material · CPC title

• B23K35/286

  Al as the principal constituent · CPC title

• B23K35/28

  with the principal constituent melting at less than 950°C · CPC title

• B23K35/0238

  layered · CPC title

• C22C21/10

  with zinc as the next major constituent · CPC title