| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite material for a tube of a heat exchanger particularly having reduced mass, and having a long service life, high strength and high corrosion resistance. SOLUTION: The composite material (1) includes: a core layer (2) containing, as alloying constituents, 0.2 to 1.2% silicon Si,≤0.8% iron Fe, 0.15 to 1.0% copper Cu,≤1.2% manganese Mn,≤1.2% magnesium Mg, 0.04 to 0.35% chromium Cr,≤0.2% zinc Zn,≤0.25% titanium Ti and≤0.3% zirconium Zr; a corrosion protective layer (3) containing≤0.6% silicon Si, 0.7% iron Fe, 0.10 to 0.3% copper Cu, 0.9 to 1.5% manganese Mn,≤0.15% magnesium Mg,≤0.2% chromium Cr,≤0.2% Zn zinc,≤0.30% titanium Ti and≤0.3% zirconium Zr; and a brazing material layer (4) containing 5 to 15% silicon Si,≤0.8% iron Fe,≤0.3% copper Cu,≤0.1% manganese Mn,≤0.05% magnesium Mg,≤0.5% zinc Zn and≤0.20% titanium Ti. COPYRIGHT: (C)2006,JPO&NCIPI |
