7020 aluminum is a medium-strength 7xxx series wrought alloy with zinc and magnesium as the main hardeners. It is valued for excellent weldability, good corrosion resistance, and strong fatigue performance, making it a common choice for welded transport and structural assemblies. Compared with 7075 it offers slightly lower peak strength but better fabrication behavior, especially in marine or humid service. Linsy supplies 7020 in sheet, plate, tube, bar, and wire with full mill certificates and a range of tempers for welding and structural use.
Available forms: sheet / plate, tube, bar / rod, wire
Common tempers: O, T5, T6, T651
Processing support: CNC machining, laser cutting, TIG/MIG welding, anodizing, polishing, powder coating
Quality documents: MTC report with every order
7020 aluminum is a medium-strength 7xxx series wrought alloy with zinc and magnesium as the main hardeners. It is valued for excellent weldability, good corrosion resistance, and strong fatigue performance, making it a common choice for welded transport and structural assemblies. Compared with 7075 it offers slightly lower peak strength but better fabrication behavior, especially in marine or humid service. Linsy supplies 7020 in sheet, plate, tube, bar, and wire with full mill certificates and a range of tempers for welding and structural use.
Available tempers: T5, T6, T651
| Temper | Thickness (mm) | Width (mm) | Length (mm) |
|---|---|---|---|
| T5, T6, T651 | 0.5 – 150 | 500 – 2600 | 500 – 16000 (cut-to-length) |
Available tempers: T5, T6, T651, O
| Temper | Outer Diameter (mm) | Wall (mm) | Length (mm) |
|---|---|---|---|
| T5, T6, T651, O | 6 – 300 | 0.5 – 40 | 500 – 12000 |
Available tempers: T5, T6, T651, O
| Temper | Diameter (mm) | Length (mm) |
|---|---|---|
| T5, T6, T651, O | 3 – 300 | 500 – 12000 |
Available tempers: T5, T6, T651, O
| Diameter (mm) | Coil weight | Tolerance |
|---|---|---|
| 0.8 – 30 | Min 50 kg | ± 0.02 mm |
7020 aluminum (EN AW-7020, AlZn4.5Mg1) is supplied to common wrought-alloy specifications. Typical standards by form: ASTM B209 (sheet and plate), ASTM B221 (extruded tube, bar, and profiles), ASTM B211 (bar and rod), and ASTM B313 (welded tube). Forging stock follows ASTM B247. Always confirm the exact specification and temper with our team for your order.
| Element | Percentage (%) |
|---|---|
| Si | 0.35 max |
| Fe | 0.50 max |
| Cu | 0.20 max |
| Mn | 0.20 – 0.60 |
| Mg | 1.0 – 1.4 |
| Cr | 0.10 – 0.35 |
| Zn | 4.0 – 5.0 |
| Ti | 0.20 max |
| Zr | 0.10 max |
| Others (each) | 0.05 |
| Others (total) | 0.15 |
| Al | Balance |
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Shear Strength (MPa) |
|---|---|---|---|---|
| T6 | 360 – 420 | — | 8 – 12 | ~ 250 |
| T651 | 360 – 420 | — | 8 – 12 | ~ 250 |
Values are typical for the indicated condition. An em dash (—) means the value was not available in the source data; confirm with the mill certificate. Asterisked values are estimates pending verification — see the audit report.
One of the more weldable 7xxx grades; widely used in welded frameworks.
Performs well under cyclic loading in transport structures.
Better than high-copper 7xxx alloys in humid and marine atmospheres.
Lower peak strength than 7075 but easier to fabricate and join.
Linsy cuts 7020 with laser and machines it on CNC centers. It welds well with MIG/TIG using matching or compatible fillers; post-weld aging can recover properties. Anodizing or powder coating improves surface durability.
Linsy is a Shenzhen-based aluminum supplier with more than 20 years of experience. Our quality system is certified to ISO 9001, ISO 14001, and ISO 45001. Every order ships with a mill test certificate (MTC). SGS third-party test reports are available on request. Typical custom lead time is 10–60 days depending on temper, size, and quantity.
For deeper reading on 7xxx selection and fabrication, see our guides on aluminum alloy selection and welding 7000-series alloys. (Internal links to be connected to published Linsy blog articles.)
7020 trades some peak strength for much better weldability and corrosion behavior, which matters for welded transport and marine structures.
We supply O, T5, T6, and T651 across sheet, tube, bar, and wire. Tell us the fabrication route and we will advise a temper.
Yes. Anodizing improves corrosion and wear resistance; note that the coating color on 7xxx alloys can vary, so confirm appearance expectations with us.
Yes, every order includes an MTC, and SGS third-party reports are available on request.
Custom aluminum orders typically ship in 10–60 days depending on alloy, temper, size, and quantity. Stock or standard sizes may be faster — ask our team.
Yes. Every order includes an MTC. SGS third-party test reports are available on request.
Yes. We provide CNC machining, laser cutting, welding, anodizing, polishing, and powder coating so parts can be delivered closer to finished form.
Send your alloy, temper, dimensions, quantity, and required standard. Our team will confirm availability, lead time, and pricing.
Linsy Advantages
Linsy Aluminum is a leading supplier of aluminum processing products, serving diverse industries including aerospace, general engineering, automotive, marine, shipbuilding and other specialized industrial applications.
We are committed to maintaining the highest standards of quality and environmental responsibility, as demonstrated by our certifications: ISO 9001:2008， ISO 14001:2004 and SGS.
