Aluminum brazing welding foil strip Alloy 4045 4004 4104 4343
Aluminum brazing foil strips made from the alloys 4045, 4004, 4104, and 4343 are commonly used in industrial brazing applications, especially in automotive, HVAC, and heat exchanger manufacturing. These alloys are chosen for their low melting points, good fluidity, and strong bonding properties.
Aluminum Brazing Foil Strip Specifications of Alloy 4045 4004 4104 4343
Alloy | 4045 | 4004 | 4104 | 4343 |
Alloy | 6.0-12.0% Si, Balance Al | 11.0-13.0% Si, Balance Al | 4.0-6.0% Si, 0.10-0.50% Cu, Balance Al | 7.5-9.0% Si, Balance Al |
Melting Point | 585°C (1085°F) | 577°C (1071°F) | 600°C (1112°F) | 575°C (1067°F) |
Strength | Moderate | Moderate | High | Moderate |
Corrosion Resistance | Good | Good | Moderate | Excellent |
Applications | Automotive, HVAC, Electronics | Automotive, HVAC, Marine | Heat Exchangers, Automotive, HVAC | Automotive, Marine, HVAC |
Typical Use | Radiators, Air Conditioners | Radiators, Condensers, Heat Exchangers | Heat Exchangers, A/C Systems | Radiators, Heat Exchangers, Marine |
Typical Sizes for Aluminum brazing welding foil strip Alloy 4045 4004 4104 4343
Dimension | Range |
Thickness | 0.5 mm -- 3.0 mm (sheet) 0.025mm--3.0mm (foil strip) |
Width | 100 mm -- 1500 mm |
Length | 500 mm-- 3000 mm (sheet ,custom lengths available) |
Key Qualities of Aluminum brazing welding foil strip Alloy 4045 4004 4104 4343
l 4045 and 4343 are ideal for applications requiring high fluidity and low melting points for easy filling of gaps in brazing.
l 4004 offers excellent fluidity and is ideal for brazing in automotive and HVAC systems, though it provides slightly less corrosion resistance than 4343.
l 4104 offers higher strength and is better suited for applications where more mechanical integrity is required but still retains good fluidity for brazing.
Common application of Aluminum brazing welding foil strip Alloy 4045 4004 4104 4343
Automotive: Used in radiators, air-conditioning components, and intercoolers;Used in automotive heat exchangers, radiators, and engine cooling components.
HVAC: Ideal for brazing heat exchangers and evaporators in air conditioning systems.
Electronics: Also used in some electronic components requiring heat dissipation.
Marine: Especially suited for marine applications due to its excellent corrosion resistance.
