Aluminum Heat Exchange Tube and Process for Fabricating Same
First Claim
1. An aluminum heat exchange tube made of an alloy containing 0.90 to 1.50 mass % of Mn, the balance being Al and impurities, the tube having electric conductivity of 30 to 43% IACS.
1 Assignment
0 Petitions
Accused Products
Abstract
An aluminum heat exchange tube 4 is made of an alloy comprising 0.90 to 1.50 mass % of Mn, and the balance Al and inevitable impurities, and has electric conductivity of 30 to 43% IACS. The tube 4 is fabricated from a tube blank made of an alloy comprising 0.90 to 1.50 mass % of Mn, and the balance Al and inevitable impurities, by holding the blank heated at 550 to 600 C in the atmosphere or in an inert gas atmosphere for 10 to 600 minutes and subsequently cooling the blank. The tube is easy and inexpensive to make and satisfactory in resistance to pitting corrosion.
11 Citations
15 Claims
- 1. An aluminum heat exchange tube made of an alloy containing 0.90 to 1.50 mass % of Mn, the balance being Al and impurities, the tube having electric conductivity of 30 to 43% IACS.
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5. A process for fabricating an aluminum heat exchange tube wherein a tube blank made of an alloy comprising 0.90 to 1.50 mass % of Mn, and the balance Al and impurities is held heated at 550 to 600°
- C. in the atmosphere or in an inert gas atmosphere for 10 to 600 minutes and subsequently cooled.
- View Dependent Claims (6, 7, 8, 9, 10)
Specification