4A43 Brazing Aluminum Sheet Foil Coil Strip

• Customization: Available
• Color: Silver
• Application: Transportation Tools, Door & Window, Decorations
• Model NO.: 4A43
• Certification: ISO9001, ASTM, JIS, GB, EN
• Technique: Cold Excruding
• Grade: 4000 Series
• Temper: O/F
• Surface Treatment: Polished
• Alloy: Alloy
• Elongation: More Than 10%
• Transport Package: Export Standard Wooden Pallet
• Specification: According to Customer Requirement
• Trademark: Chalco Aluminum
• Origin: Henan China
• HS Code: 7606125900
• Production Capacity: 20000mt/Month

Product Description

4A43 brazing aluminum sheet foil coil strip

1.The Introduction of 4A43 brazing aluminum sheet foil coil strip
The Si content of 4A43 brazing aluminum sheet foil coil strip is 6.8%-8.2%, which is a hypoeutectic alloy in the aluminum-silicon series.
Its Si content is the same as that of 4343 aluminum alloy, but the Zn content is slightly different. It has higher Si content than 4043 aluminum alloy, and has the characteristics of low melting point and good fluidity. In addition, it also has the characteristics of small cladding interface diffusion layer, good sag resistance and excellent corrosion resistance.
It is often used as a cladding layer for aluminum heat transfer materials and as a brazing material for cladding plates and cladding fins.
Its typical brazing alloy combination is 4A43/3003/4A43, 4A43/3003/7072.

2.The Specification of 4A43 brazing aluminum sheet foil coil strip
*Alloy: 4A43
*Temper: O,H12,H22,H14,H24,H16,H26,H18,F,H112 etc
*Thickness: 0.05mm~6mm
*Sheet width: 450mm -2200mm; coil width: 5mm-2200mm
*Length: 500-15000mm or Coiled, coil outer diameter: Max 2500mm
*Delivery shape: aluminum foil: 0.05mm~0.20mm; plate shape; Coil shape; Strip shape
*Inner diameter of coils: 75mm, 76mm, 150mm, 152mm, 200mm, 250mm, 300mm, 405mm, 505mm
Paper core or aluminum core, outer diameter according to customer requirements.

3.The Chemical composition of 4A43 brazing aluminum sheet foil coil strip

4A43  Chemical Composition(%)
Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	Ni	Alu
6.8--8.2	<0.8	<0.25	<0.10	--	--	0.50--1.5	--	--	Remainder

4.The Mechanical properties of 4A43 brazing aluminum sheet foil coil strip
 

Alloy	Temper	Thickness (mm)	Mechanical properties
			Tensile Strength(Mpa)	Yield strength (Mpa)	Elongation (%)
			standard value	standard value	A50
			Not less than
4A43	O	0.05-0.5	90-140	35	5
		>0.5-3.0			10
	H12 H22	0.05-0.5	120-170	100	2
		>0.5-3.0			3
	H14 H24	0.05-0.5	140-190	120	1
		>0.5-3.0			1
	H16 H26	0.05-0.5	160-210	140	0.5
		>0.5-3.0			1
	H18	0.05-0.5	180	160	0.2
		>0.5-3.0			1

5.The Performance advantages of 4A43 brazing aluminum sheet foil coil strip
A: The alloy has the characteristics of low melting point and good fluidity.
B: The alloy also has the characteristics of small composite interface diffusion layer, good sag resistance and excellent corrosion resistance.
C: The aluminum heat transfer material produced with this alloy has the characteristics of high yield and high production efficiency.
D: The aluminum heat transfer material produced with this alloy makes it possible to further thin the composite material.

6.The Usage of 4A43 brazing aluminum sheet foil coil strip
4A43 brazing aluminum sheet foil coil strip is often used as the cladding layer of aluminum heat transfer materials, as the brazing material for cladding plates and cladding fins. It is widely used in the manufacture of heat exchangers in automobiles, electronic appliances, chemicals, diesel machinery and other fields, such as water tank radiators, evaporators, air-conditioning condensers, heaters, electrical components radiators, etc.