7075 铝合金

7075 aluminum is the best-known high-strength 7xxx series alloy, with zinc as the principal hardener and copper and magnesium as major additions. In the T6 and T651 tempers it reaches strength comparable to many steels while staying light, which is why it has been the aerospace and performance-engineering standard for decades. Its corrosion resistance is lower than 6xxx grades, so exterior use usually calls for cladding or coating. Linsy supplies 7075 across the full form range — sheet, plate, tube, bar, wire, and profile — with mill test certificates on every order.

可选格式: 板材/片材、管材、棒材/圆棒、线材
常见脾气: F, H112, O, T6, T651, T7451
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

What Is 7075 Aluminum?

7075 aluminum is the best-known high-strength 7xxx series alloy, with zinc as the principal hardener and copper and magnesium as major additions. In the T6 and T651 tempers it reaches strength comparable to many steels while staying light, which is why it has been the aerospace and performance-engineering standard for decades. Its corrosion resistance is lower than 6xxx grades, so exterior use usually calls for cladding or coating. Linsy supplies 7075 across the full form range — sheet, plate, tube, bar, wire, and profile — with mill test certificates on every order.

现有的7075铝合金产品

板材/片材

可提供的状态: F、O、T6、T651、T7451、H112

脾气 厚度(毫米) 宽度(毫米) 长度(毫米)
F、O、T6、T651、T7451、H112 0.5 – 200 500 – 2600 500 – 16000(可按需定尺切割)

管材

可提供的状态: F、O、T6、T651、T7451、H112

脾气 外径(毫米) 壁厚(毫米) 长度(毫米)
F、O、T6、T651、T7451、H112 6 – 300 0.5 – 40 500 – 12000

棒材/圆棒

可提供的状态: F、O、T6、T651、T7451、H112

脾气 直径(毫米) 长度(毫米)
F、O、T6、T651、T7451、H112 3 – 300 500 – 12000

线材

可提供的状态: T6, T651

直径(毫米) 卷材重量 宽容
0.8 – 30 至少 50 公斤 ± 0.02 毫米

规格与等效牌号

7075 aluminum (EN AW-7075, AlZn5.5MgCu) 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), ASTM B247 (forging stock), and ASTM B313 (welded tube). Always confirm the exact specification and temper with our team for your order.

化学成分

要素 百分比 (%)
Si 0.40(上限)
最大 0.50
1.2 - 2.0
0.30(上限)
2.1 - 2.9
Cr 0.18 - 0.28
5.1 - 6.1
Ti 0.20(最大值)
Zr 最大 0.25
其他(每项) 0.05
其他(共计) 0.15
Al 平衡

不同回火状态下的力学性能

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 – 290 95 – 145 10 – 13 150
T6 540 – 570 480 – 505 8 – 11 330
T651 540 – 570 480 – 505 8 – 11 330
T73 / T7451 470 – 500 390 – 420 8 – 11 285

Values are typical AA 7075 figures by temper; the soft O condition and peak T6 / overaged T73 differ widely. Confirm exact numbers with the mill certificate.

硬度选择指南

  • O — Annealed, softest condition for forming.
  • T6 — Peak-aged; maximum strength for the alloy.
  • T651 — Stress-relieved T6; preferred for machining and plate.
  • T73 / T7451 — Overaged for much better stress-corrosion resistance; used where corrosion matters.
  • H112 — As-fabricated plate, no special heat treatment.

主要特点

Benchmark high strength

Decades of use as the reference strong aluminum alloy.

Excellent strength-to-weight

Steel-like strength at a fraction of the mass.

Lower corrosion resistance

Clad sheet or coatings recommended for exterior service.

Poor weldability

Generally supplied machined or bonded, not welded.

应用

  • Aircraft wing and fuselage structures
  • Performance automotive and motorcycle parts
  • Bicycle frames and components
  • Tooling, molds, and fixtures
  • Defense and ordnance components

加工与表面处理说明

Linsy machines 7075 on CNC centers and laser-cuts plate and sheet. Anodizing or painting improves corrosion resistance; clad sheet is available for exterior use. Welding is not recommended — for joints, consider 6061 or a welding-grade 7xxx with our team.

质量文件与检验

Linsy 是一家总部位于深圳的铝材供应商,拥有超过 20 年的经验。我们的质量体系已通过 ISO 9001、ISO 14001 和 ISO 45001 认证。每笔订单均附带工厂测试证书 (MTC)。可根据要求提供 SGS 第三方测试报告。典型的定制交货期为 10-60 天,具体取决于状态、尺寸和数量。.

Why Choose Linsy for 7075 Aluminum

  • 深圳工厂,拥有 20 多年服务航空航天、汽车和通用工程采购商的经验
  • 产品形态范围广泛:板材、片材、卷材、管材、棒材、线材、型材和锻件原料
  • 在同一工厂内提供 CNC 加工、激光切割、TIG/MIG 焊接以及阳极氧化/抛光/粉末喷涂服务
  • 每笔订单均附带工厂测试证书;可根据要求提供 SGS 报告
  • 通过 ISO 9001 / ISO 14001 / ISO 45001 认证的运营

相关资源

Explore these in-depth guides from our technical library:

7075 Aluminum FAQ

What is 7075 best for?

Applications where maximum strength-to-weight matters: aircraft structures, performance automotive, bike frames, and tooling.

T6 or T651 — which should I choose?

T651 is stress-relieved and the usual choice for plate and bar where machining stability matters; T6 is the peak-aged baseline.

Is 7075 corrosion resistant?

Less so than 6xxx alloys. Use T73/T7451 tempers or cladding/coating for corrosive environments.

Can 7075 be welded?

It welds poorly and loses strength in the heat-affected zone. For welded builds, ask us about 6061 or a qualified welding-grade alternative.

订单附带哪些文件?

每笔订单均附带 MTC,可根据要求提供 SGS 第三方测试报告。.

常见订购问题解答

通常的交货周期是多久?

定制铝材订单通常在 10-60 天内发货,具体取决于合金、状态、尺寸和数量。库存或标准尺寸可能更快——请咨询我们的团队。.

我能获得工厂测试证书吗?

可以。每笔订单均包含 MTC。可根据要求提供 SGS 第三方测试报告。.

你们提供机加工和表面处理服务吗?

是的。我们提供 CNC 加工、激光切割、焊接、阳极氧化、抛光和粉末喷涂服务,以便零件可以以更接近成品的形式交付。.

如何申请报价?

请发送您的合金、状态、尺寸、数量和所需标准。我们的团队将确认供货情况、交货期和价格。.

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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。

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