7075 aluminum round bar is a top-tier aerospace alloy offering exceptional strength and hardness comparable to many steels. Supplied mainly in T6 and T651 tempers, it is the go-to choice for shafts, gears, and other critical high-stress components. Linsy supplies 7075 round bar in O, T6, T651, T73, and T7351 tempers with custom cutting, CNC machining, and anodizing support. Every order ships with an MTC report so you can verify composition and properties before production.
可选格式： round bar / plate / sheet
常见脾气： O / T6 / T651 / T73 / T7351
处理支持： CNC machining / cutting / anodizing / polishing
质量文件： 每笔订单均附有MTC报告
7075 aluminum round bar is a top-tier aerospace alloy offering exceptional strength and hardness comparable to many steels. Supplied mainly in T6 and T651 tempers, it is the go-to choice for shafts, gears, and other critical high-stress components.
Linsy supplies 7075 round bar across the common tempers. The size ranges below are typical; custom dimensions and tight tolerances can be quoted on request.
| Dimension | 典型范围 |
| 直径 | 6 – 400 mm |
| 长度 | 1,000 – 6,000 mm (custom cut) |
| 情绪 | O / T6 / T651 / T73 / T7351 |
| 体系 | 名称 |
| AA（美国） | 7075 |
| EN AW | EN AW-7075 |
| UNS | A97075 |
| 国际标准化组织 | AlZn5.5MgCu |
| 常见状态 | O / T6 / T651 / T73 / T7351 |
| 要素 | 内容 (%) |
| 硅 (Si) | 0.40（上限） |
| 铁（Fe） | 最大 0.50 |
| 铜 (Cu) | 1.2 - 2.0 |
| 锰 (Mn) | 0.30（上限） |
| 镁（Mg） | 2.1 - 2.9 |
| 铬 (Cr) | 0.18 - 0.28 |
| 锌 (Zn) | 5.1 - 6.1 |
| 钛 (Ti) | 0.20（最大值） |
| 锆 (Zr) | 最大 0.25 |
| 其他（每项） | 0.05 最大值 |
| 其他（共计） | 0.15 最大值 |
| 铝 (Al) | 剩余 |
Values below are typical AA reference figures for 7075 and should be confirmed against Linsy mill test data before specification.
| 脾气 | 拉伸强度（兆帕） | 屈服强度（兆帕） | 伸长率 (%) | 剪切强度（兆帕） |
| O | 230 | 105 | 10 | — |
| T6 | 570 | 505 | 11 | 330 |
| T651 | 570 | 505 | 11 | 330 |
| T73 | 525 | 470 | 11 | — |
| T7351 | 525 | 455 | 11 | — |
| 脾气 | 使用时机 |
| O | Annealed, softest condition for forming; lowest strength. |
| T6 / T651 | Peak strength tempers for general high-stress parts; T651 adds stress relief for improved dimensional stability. |
| T73 / T7351 | Overaged tempers with improved corrosion resistance and reduced quench sensitivity; preferred for thick sections and corrosive environments. |
7075 is one of the strongest commercial aluminum alloys, with T6/T651 yield strength around 505 MPa.
Bare 7075 has moderate general corrosion resistance. The T73/T7351 tempers improve resistance to stress-corrosion cracking, especially in thicker sections.
Machinability is excellent in the T6 condition. Weldability is poor — fusion welding is generally not recommended; mechanical fastening or adhesive bonding is preferred.
7075 round bar can be CNC-machined, cut, and profiled to drawing. Anodizing is possible but offers limited corrosion benefit compared with 6xxx alloys; for corrosive service consider the T73 temper or a protective coating. Fusion welding is not advised — design for mechanical joining.
Every 7075 aluminum order ships with a Mill Test Certificate (EN 10204 3.1 MTC) confirming chemical composition and mechanical properties against the specified temper. In-process inspections cover dimensional tolerance, surface condition, and flatness or straightness as applicable. Third-party inspection and SGS test reports can be arranged on request for project-specific requirements.
For maximum strength use T6 or T651. For better corrosion resistance in thick or corrosive sections, choose T73/T7351.
Fusion welding of 7075 is generally not recommended due to cracking risk and strength loss. Mechanical fastening or bonding is preferred.
Yes. We cut to length and can machine to drawing. Provide required dimensions and tolerances in your RFQ.
标准库存规格通常可在10至60天内发货，具体取决于回火状态、数量及任何定制加工要求。询价时请与我们的销售团队确认确切时间表。.
可以。我们提供定尺切割、锯切及按图纸进行CNC加工，并可根据要求采购特定回火状态的产品。请在询价单中注明所需尺寸及公差。.
每份订单均附带一份工厂测试证书（MTC）。必要时可安排SGS或其他第三方检验报告。.
常见选项包括原始表面、阳极氧化和抛光。具体表面处理应在报价阶段达成一致。.
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。
