7003 aluminum is a medium-strength 7000-series (Al-Zn-Mg) alloy that is easier to weld than the high-strength 7075 and 7050 grades. It offers a strong, lightweight option for extruded frames, tubes, and plates in transport and sporting goods. Linsy supplies 7003 in sheet, coil, tube, and bar with tempers T5, T6, and T651.
可选格式： sheet / coil, tube, bar / rod
常见脾气： T6, T651, T5
处理支持： CNC 加工、激光切割、TIG/MIG 焊接、阳极氧化、抛光、粉末喷涂
质量文件： 每笔订单均附有MTC报告
7003 gains strength from zinc and magnesium with a small zirconium addition for grain control. Its weldability is one of its key selling points: welded joints keep much more strength than those in 7075, so it is favored where large assemblies are welded rather than machined. Strength sits between 6061 and 7075.
| 参数 | 厚度范围 |
|---|---|
| 厚度 | 0.3 – 150毫米 |
| 宽度 | 500 – 2600毫米 |
| 长度 | 500 – 16000毫米 |
| 情绪 | T5, T6, T651 |
| 参数 | 厚度范围 |
|---|---|
| 外径 | 6 – 300毫米 |
| 壁厚 | 0.5 – 40毫米 |
| 长度 | 最长12000毫米 |
| 情绪 | T5, T6, T651 |
| 参数 | 厚度范围 |
|---|---|
| 直径 | 3 – 300毫米 |
| 长度 | 最长12000毫米 |
| 情绪 | T5, T6, T651 |
| 名称 | 参考标准 |
|---|---|
| AA / UNS | A97003 |
| EN AW | EN AW-7003 / AlZn6Mg0.8Zr |
| 常用标准 | ASTM B221, EN 755, GB/T 3191 |
| 系列 | 7000 (Al-Zn-Mg) |
| 要素 | 含量（重量百分比） |
|---|---|
| 硅 (Si) | 0.12 最大值 |
| 铁（Fe） | 0.15 最大值 |
| 铜 (Cu) | 0.20（最大值） |
| 锰 (Mn) | 最大 0.10 |
| 镁（Mg） | 2.20 – 2.70 |
| 铬 (Cr) | 0.05 – 0.20 |
| 锌 (Zn) | 5.70 – 6.70 |
| 锆 (Zr) | 0.05 – 0.25 |
| 钛 (Ti) | 0.20（最大值） |
| 其他，各 | 0.05 最大值 |
| 其他，合计 | 0.15 最大值 |
| 铝 (Al) | 平衡 |
| 脾气 | 抗拉强度 (MPa) | 屈服强度 (MPa) | 伸长率 (%) | 剪切强度（MPa） |
|---|---|---|---|---|
| T6 | 340 – 400 | 300 – 340 | 8 – 12 | 280 – 380 |
| T651 | 340 – 400 | 300 – 340 | 8 – 12 | 280 – 380 |
| T5 | 300 – 350 | 250 – 300 | 10 – 14 | 200 – 240 |
Peak strength for welded frames and structural members where maximum load capacity is needed.
Cooled from extrusion and artificially aged; good strength with lower cost than full T6 solution treatment.
Better weld retention than 7075/7050, ideal for welded assemblies.
Stronger than 6061 at similar weight.
Good for 7000-series; acceptable in many transport environments.
Readily extruded into complex profiles.
7003 welds well with TIG/MIG using 5356 or 5183 filler. Note that the heat-affected zone loses some strength, so design welds accordingly. It machines and anodizes acceptably, though 7xxx anodizing can show slight color variation. Post-weld artificial aging can recover part of the strength loss.
每笔订单均附带记录化学成分和力学性能的工厂质保书（MTC）。我们的质量体系已通过ISO 9001、ISO 14001和ISO 45001认证。可根据要求安排第三方SGS检测报告。检验涵盖尺寸、表面状态以及按状态进行的力学性能验证。.
Linsy Aluminum is a Shenzhen-based aluminum manufacturer with more than 20 years of experience supplying the 1000 to 8000 series in plate, bar, tube, wire, coil, profile, and block forms. For 7003 aluminum, we support both off-the-shelf ranges and made-to-order dimensions.
See the blog articles linked below for deeper background, and contact our team for a tailored quote on 7003 aluminum.
Both are weldable medium-strength 7xxx alloys. 7005 carries a bit more manganese and is common in marine and rail welded structures; 7003 is widely used for extrusions in transport and sporting goods. Strength overlaps.
Yes for strength: 7003 is stronger than 6061 after welding while remaining weldable. Choose 6061 when maximum corrosion resistance or simpler welding is the priority.
The heat-affected zone softens, as with most heat-treatable alloys. Design for the welded-zone strength, or apply post-weld aging where the spec allows.
定制尺寸和热处理状态通常可在10至60天内发货。具体时间窗口请在询价时确认，因其取决于合金、热处理状态、尺寸及订单数量。.
最小起订量灵活，逐案评估。小批量及样品订单通常可以满足；大批量或标准规格订单更具经济性。请提供所需尺寸和数量以获取正式报价。.
每笔订单均附带工厂材质证明书（MTC）。我们的管理体系已通过ISO 9001、ISO 14001及ISO 45001认证。可根据要求安排SGS第三方检测报告。.
可以。我们提供CNC机加工、激光切割、TIG/MIG焊接以及表面处理服务，包括阳极氧化、抛光、粉末喷涂及PVC膜保护。.
请提供您的合金/热处理状态、所需形态、尺寸、数量及任何加工或认证要求。我们的团队将回复包含交货周期和运输条款的报价。.
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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。
