3004 Aluminum Welded Tubes - ASTM B313 Spec

3004 Aluminum Welded Tube is a high-performance, high-frequency welded tube made by forming aluminum flat strips and then connecting the edges through a high-frequency welding process. Compared to extruded and drawn tubes, the main distinction of welded tubes is that they can utilize multiple layers of different aluminum alloys. Composite layers are widely used in the production of heat exchanger piping for in-furnace or flame brazing, providing sacrificial corrosion resistance.

3004 is renowned for its medium strength and excellent corrosion resistance. It primarily consists of aluminum, manganese, and magnesium, with about 1% magnesium added to enhance its performance over traditional 3003 alloy. 3004 aluminum alloy can achieve increased strength through cold working while maintaining good machinability and enhancing its tensile strength.

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Features of 3004 aluminum welded tubes

High Strength: Higher strength than 3003, suitable for occasions where structural integrity is required.
Corrosion Resistance: Excellent corrosion resistance in humid and chemical environments.
Weldability: Good welding performance, suitable for various industrial welding.

Best applications for 3004 aluminum welded tubes

Industrial Equipment - In the field of industrial equipment, 3004 aluminum tube is often used to manufacture pipes for transporting liquids and gases, especially in applications that require lightweight and corrosion resistance.

Pipes and Pressure Vessels - In the chemical and petroleum industries, 3003 aluminum tube is used to manufacture low-pressure containers and piping systems. Its corrosion resistance and strength can withstand medium-pressure environments, making it a safe choice for transporting chemicals.

Roof Drainage Systems - The corrosion resistance of 3004 aluminum tube makes it perform well in roof drainage systems. 3003 aluminum tube is often used in building components such as drainage pipes and gutters to ensure long-term stability and low maintenance costs.

Coolers and Radiators - The thermal conductivity of 3004 makes it an ideal choice for manufacturing coolers and radiators. In automobiles, electronic equipment, and home appliances, 3003 aluminum tube is widely used in heat transfer components to improve heat dissipation efficiency.

3004 Aluminum welded tubes procurement guide

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UNS A93004 aluminum welded tube knowledge center

Equivalent Name of 3004 aluminum alloy

ENAW-AlMn1Mg1
3.0526
AlMn1Mg1
D12
A-M1G
AlMn1Mg1

Specification for 3004 aluminum tube

EN 1592-2: 1998 - Aluminium and aluminium alloys. HF seam welded tubes. Mechanical properties
ASTM B313 - Standard Specification for Aluminum and Aluminum-Alloy Round Welded Tubes
EN 573-3: 2009 Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products

Chemical composition of 3004 aluminum tube

Element	UNS A93004
Si	0.30
Fe	0.7
Cu	0.25
Mn	1.0-1.5
Mg	0.8-1.3
Cr	-
Zn	0.25
Ti	-
Others (Each)	0.05
Others (Total)	0.15
Al	Rem

Physical properties of 3004 aluminum tube

Properties	3004
Density	2.72 g/cm³
Melting point	562-646°C
Thermal conductivity	148 W/m·K
Coefficient of thermal expansion	23.8 µm/m·°C
Electrical conductivity	40 % IACS

Mechanical properties of 3004 aluminum tube

Properties	O	H32	H34	H36	T38
Tensile strength Rm/Ksi	22-29	28-35	32-38	35-41	38
Yield strength Rp0.2/Ksi	8.5	21	25	28	31
Elongation	16-18%	4-6%	3-5%	3-4%	3-4%

3003 vs 3004

3003 is a general-purpose aluminum alloy composed mainly of aluminum and manganese. It has medium strength, good formability and excellent corrosion resistance. This alloy can be cold worked but not heat treated and is commonly used in the manufacture of various types of containers and decorative products.

3004 aluminum alloy is based on 3003 alloy and adds about 1% magnesium, thereby significantly improving the strength of the material. It also has good formability and corrosion resistance, but its mechanical properties are superior.

Strength and Hardness

3003: Suitable for medium-strength applications. It has low tensile strength and yield strength, but good ductility, suitable for deep drawing and stretching.
3004: Stronger than 3003, suitable for applications requiring higher strength, such as beverage can manufacturing and structural parts. Can withstand greater mechanical stress and strain.

Formability

3003: Excellent formability, suitable for forming processes requiring complex shapes.
3004: Good deep drawing forming ability, can process thinner blanks, especially suitable for manufacturing containers with complex shapes.

Corrosion resistance

3003: Good corrosion resistance, stable in most environments.
3004: Due to the addition of magnesium, the corrosion resistance is further enhanced, suitable for use in humid and corrosive environments.

Weldability

3003: Good weldability, suitable for conventional welding operations.
3004: Better weldability than 3003, especially suitable for MIG and TIG welding.

Both 3003 and 3004 aluminum alloys are cost-effective materials commonly used in construction, packaging and industrial manufacturing. 3003 aluminum alloy is suitable for general applications due to its formability and corrosion resistance, while 3004 aluminum alloy is ideal for complex and high-strength occasions due to its higher strength and good corrosion resistance.