7075 aluminum square bar is one of the strongest commercially available aluminum sections, with zinc as the primary alloying element delivering strength comparable to many steels at roughly one-third the weight. Linsy supplies 7075 square bar in T6, T651, T7351 and T7451 tempers for aircraft structures, molds, dies, fixtures and high-stress machine parts where rigidity is non-negotiable.
Formulaires disponibles : square bar
Tempéraments courants : O / T6 / T651 / T7351 / T7451
Assistance technique : CNC machining, saw cutting, anodizing, polishing
Documents relatifs à la qualité : Rapport MTC joint à chaque commande
7075 aluminum square bar is one of the strongest commercially available aluminum sections, with zinc as the primary alloying element delivering strength comparable to many steels at roughly one-third the weight. Linsy supplies 7075 square bar in T6, T651, T7351 and T7451 tempers for aircraft structures, molds, dies, fixtures and high-stress machine parts where rigidity is non-negotiable. In the T6 and T651 tempers it reaches peak tensile strength (~570 MPa); the T73/T7351 and T7451 tempers trade some strength for improved resistance to stress-corrosion cracking, which matters for thicker sections and outdoor or corrosive service.
| Side (mm) | Longueur (mm) | Tempérer |
|---|---|---|
| 5 – 200 | up to 16,000 | O, T6, T651, T7351, T7451 |
| Custom sizes available on request | — | — |
7075 square bar is supplied to ASTM B221 / AMS 4154 (T6/T651) and AMS 4078 (T7351) where applicable, with GB/T 3191 and EN 754 references available on request. EN AW designation: EN AW-7075.
| Élément | Contenu (%) |
|---|---|
| Si | 0,40 max |
| Fe | 0,50 max |
| Cu | 1.2 - 2.0 |
| Mn | 0,30 max |
| Mg | 2.1 - 2.9 |
| Cr | 0.18 - 0.28 |
| Zn | 5.1 - 6.1 |
| Ti | 0,20 max |
| Zr | 0.05 - 0.25 |
| Autres (chacun) | 0,05 max |
| Autres (total) | 0,15 max |
| Al | Équilibre |
| Tempérer | Résistance à la traction (MPa) | Limite d'élasticité (MPa) | Elong. (%) |
|---|---|---|---|
| O | 230 | 105 | 10 min |
| T6 | 570 | 505 | 11 |
| T651 | 570 | 505 | 11 |
| T7351 | 505 | 435 | 11 |
| T7451 | 525 | 455 | 10 |
T6 / T651 — maximum strength, best for machined parts and fixtures. T7351 / T7451 — improved stress-corrosion resistance for structural parts in corrosive or outdoor service. 7075 is not a marine-grade alloy; for seawater exposure consider a cladding or a different grade and confirm with our engineers.
Among the strongest aluminum sections, ideal where mass matters.
Cuts cleanly in T6/T651; use rigid tooling and flood coolant.
7075 is generally not recommended for fusion welding; use mechanical fastening.
Aircraft structures, molds and dies, high-stress machine parts, fasteners and fittings, defense and sporting goods.
We offer CNC machining, precision saw cutting, anodizing and polishing. 7075 work-hardens; use sharp tooling. For corrosion service, anodizing plus a sealant is advised.
Every order ships with an MTC (material test certificate). SGS third-party test reports are available on request. Linsy holds ISO 9001, ISO 14001 and ISO 45001.
Linsy Aluminum is a Shenzhen-based aluminum supplier with 20+ years of experience across the 1000–8000 series. We stock and custom-cut 7075 square bar, support CNC machining and surface finishing, and deliver MTC documentation with every order. Typical custom lead time is 10–60 days.
Explore these in-depth guides from our technical library:
What tempers are available for 7075 square bar?
O, T6, T651, T7351 and T7451.
Is 7075 square bar weldable?
Fusion welding is generally not recommended; use mechanical fastening.
What lead time should I expect?
Typical custom lead time is 10–60 days depending on size and temper.
Fournissez-vous des certificats d'essai en usine ?
Yes, an MTC is included with every order.
Can you cut to custom lengths?
Yes, cut-to-length and CNC machining are supported.
What standards do you supply to?
Commonly ASTM B221, AMS, GB/T and EN references on request.
Avantages pour Linsy
Linsy Aluminum est un fournisseur de premier plan de produits de transformation de l'aluminium, au service de diverses industries, notamment l'aérospatiale, l'ingénierie générale, l'automobile, la marine, la construction navale et d'autres applications industrielles spécialisées.
Nous nous engageons à respecter les normes les plus strictes en matière de qualité et de responsabilité environnementale, comme en témoignent nos certifications : ISO 9001:2008， ISO 14001:2004 et SGS.
