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.
可选格式： square bar
常见脾气： O / T6 / T651 / T7351 / T7451
处理支持： CNC machining, saw cutting, anodizing, polishing
质量文件： 每笔订单均附有MTC报告
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) | 长度（毫米） | 脾气 |
|---|---|---|
| 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.
| 要素 | 内容 (%) |
|---|---|
| Si | 0.40（上限） |
| 铁 | 最大 0.50 |
| 铜 | 1.2 - 2.0 |
| 锰 | 0.30（上限） |
| 镁 | 2.1 - 2.9 |
| Cr | 0.18 - 0.28 |
| 锌 | 5.1 - 6.1 |
| Ti | 0.20（最大值） |
| Zr | 0.05 - 0.25 |
| 其他（每项） | 0.05 最大值 |
| 其他（共计） | 0.15 最大值 |
| Al | 平衡 |
| 脾气 | 抗拉强度 (MPa) | 屈服强度 (MPa) | 延伸率 (%) |
|---|---|---|---|
| O | 230 | 105 | 10 最小值 |
| 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.
你们提供工厂测试证书吗？
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.
林西优势
林西铝业是铝加工产品的领先供应商，服务于航空航天、通用工程、汽车、船舶和其他专业工业应用等多个行业。
我们致力于保持最高标准的质量和环境责任，我们的认证证明了这一点：ISO 9001:2008、ISO 14001:2004 和 SGS 认证。
