Quick answer: Common aluminum pipe and tube alloys include 3003, 5052, 5083, 6061, 6063, 6101 and 7075, but availability depends on product form and standard. Select the grade only after defining corrosion, strength, forming, welding, conductivity, pressure/design responsibility and dimensional requirements.
Common Alloy Families for Pipe and Tube
| Alloy / family | Typical reason considered | Important limitation or question |
|---|---|---|
| 3003 | Formability and general corrosion resistance | Confirm strength, joining and actual tube specification |
| 5052 | Formability, corrosion resistance and welded fabrications | Product form and temper availability must match the drawing |
| 5083 | Marine/corrosive environments and welded structures | Temper, thickness and welding/design rules matter |
| 6061 | Balanced strength, machinability, corrosion resistance and fabrication | Welding changes local properties; specify temper and product form |
| 6063 | Extrudability, surface finish and architectural profiles | Lower structural strength than some 6061 tempers |
| 6101 | Electrical conductivity with useful mechanical properties | Temper changes the strength-conductivity balance |
| 7075 | High strength for selected engineering parts | Joining and corrosion protection need careful review |
Pipe, Tube and Hollow Profile Are Not Interchangeable Terms
The governing standard may define products by manufacturing route and intended use. “Pipe” can imply a schedule or pressure-service convention; “tube” is commonly ordered by OD and wall; an extruded hollow profile may use another dimensional system. Put the controlling dimensions and standard on the RFQ.
Temper Can Change the Decision
The same alloy in O, H, T4, T6 or stress-relieved conditions can have different strength, formability and machining behavior. Do not compare alloy numbers without the full temper and product-form property table from the applicable standard.
Standards and Service Requirements
- Identify whether the product is extruded, drawn, welded or otherwise manufactured.
- For pressure or fluid service, state the design code, fluid, pressure and temperature.
- For structural use, state load/design standard, welding and inspection requirements.
- For electrical use, specify conductivity, joint and temperature-rise requirements.
- For close-fit components, state OD, ID, wall, ovality, straightness and surface acceptance.
Buyer Selection Checklist
- Application and failure mode to avoid
- Alloy and full temper
- Governing material/product standard
- OD/ID/wall/length and tolerances
- Joining, bending, machining and finishing route
- Environment and galvanic contacts
- Certificate, traceability and inspection scope
Use the product page to confirm form and then send the full standard, temper and dimensional requirements.
Post time: Jun-24-2025