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The 3A21 Aluminum Tube is a high-corrosion-resistance aluminum alloy tubing widely used across industrial, automotive, HVAC, refrigeration, and structural applications. Belonging to the Al-Mn alloy family, 3A21 aluminum tubings combine excellent rust resistance, good weldability, and high formability, making them ideal for environments that demand durability in corrosive conditions. Its mechanical strength is enhanced mainly through cold working rather than heat treatment, and it is available in a variety of shapes including round, square, seamless, and coiled tubes to meet diverse engineering requirements. Common temper states include O, H111, H112, H14, and others that influence ductility and strength. Typical applications include pipelines, heat exchanger components, electrical bus conductors, structural frames, and fluid conveyance systems.
3A21 Aluminum Tube
The 3A21 Aluminum Tube is a high-corrosion-resistance aluminum alloy tubing widely used across industrial, automotive, HVAC, refrigeration, and structural applications. Belonging to the Al-Mn alloy family, 3A21 aluminum tubings combine excellent rust resistance, good weldability, and high formability, making them ideal for environments that demand durability in corrosive conditions. Its mechanical strength is enhanced mainly through cold working rather than heat treatment, and it is available in a variety of shapes including round, square, seamless, and coiled tubes to meet diverse engineering requirements. Common temper states include O, H111, H112, H14, and others that influence ductility and strength. Typical applications include pipelines, heat exchanger components, electrical bus conductors, structural frames, and fluid conveyance systems.
| Product Name | 3A21 Aluminum Tube (Al-Mn Series Alloy) |
| Material/Alloy | 3A21 (Aluminum-Manganese Alloy – corrosion-resistant) |
| Standard | ASTM, JIS, GB/DIN/EN selectable per customer needs |
| Temper/Status | O, H111, H112, H14, H16, H18, etc. (customizable) |
| Shape Types | Round Tube, Square Tube, Seamless Tube, Coil Tube |
| Outer Diameter Range | ~2mm up to ~420mm+ (shape and application dependent) |
| Wall Thickness | ~0.5mm – 15mm+ (customizable) |
| Length Options | 1m – 15m (or custom length) |
| Surface Finish | Mill finish, anodized, polished (optional) |
| Mechanical Properties | Moderate strength, corrosion-resistant, good ductility |
| Typical Applications | Oil and fluid pipelines, HVAC & refrigeration tubing, heat exchangers, structural supports, electrical bus conductors, automotive systems, industrial frames |
