进步
1. 产品概述
这 7075-T6铝圆棒 is a high-strength, “aircraft-grade” aluminum alloy engineered for applications where superior strength-to-weight ratio and structural integrity are paramount . As a member of the 7000-series (aluminum-zinc-magnesium-copper alloy system), 7075 is renowned as one of the strongest commercially available aluminum alloys, delivering tensile strength comparable to many structural steels while maintaining the lightweight characteristics inherent to aluminum .
这 T6 temper indicates that the material has undergone solution heat treatment followed by artificial aging, a process that achieves peak hardness and optimal mechanical properties . This makes the 7075-T6 aluminum round bar the preferred choice for mission-critical components across the aerospace, defense, 汽车, and high-performance industrial sectors .
2. 主要特点 & 好处
High Strength-to-Weight Ratio
7075-T6 delivers an exceptional balance of strength and lightness. 极限拉伸强度为 83 KSI (572 兆帕) 和屈服强度 73 KSI (503 兆帕), it provides the structural performance required for highly stressed applications while significantly reducing component weight .
Excellent Fatigue Resistance
The alloy withstands repeated stress cycles effectively, ensuring long service life under cyclic loading conditions commonly encountered in aerospace and high-performance mechanical systems .
Good Machinability
7075-T6 offers a machinability rating of approximately 70% (compared to 2011 合金), 实现高效车削, 铣削, 钻孔, 和线程操作. It can be machined to tight tolerances with appropriate tooling and process control .
卓越的耐腐蚀性 (with Treatment)
While the alloy’s high zinc content makes it more susceptible to corrosion than 6000-series alloys, proper surface treatments—such as anodizing, 覆层 (Alclad), or protective coatings—effectively mitigate environmental degradation .
Heat Treatable
The T6 temper is achieved through solution heat treatment and artificial aging, allowing for peak strength and hardness optimization .
3. 化学成分 (7075 铝)
| 元素 | 百分比 |
|---|---|
| 铝 (铝) | 90.0% |
| 锌 (锌) | 5.1 – 6.1% |
| 镁 (镁) | 2.1 – 2.9% |
| 铜 (铜) | 1.2 – 2.0% |
| 铬 (铬) | 0.18 – 0.28% |
| 硅 (和) | 0.40% 最大限度 |
| 铁 (铁) | 0.50% 最大限度 |
| 锰 (锰) | 0.30% 最大限度 |
| 钛 (的) | 0.20% 最大限度 |
Data sourced from industry standards ASTM B211 and AMS specifications
4. 机械性能 (Typical Values – T6 Temper)
| 财产 | 价值 (帝国) | 价值 (公制) |
|---|---|---|
| 极限拉伸强度 | 83,000 磅/平方英寸 | 572 兆帕 |
| 屈服强度 (0.2% 抵消) | 73,000 磅/平方英寸 | 503 兆帕 |
| 伸长 (in 2″) | 11% | 11% |
| 剪切强度 | 48,000 磅/平方英寸 | 331 兆帕 |
| Brinell硬度 | 150 HB | 150 HB |
| 洛氏硬度 (B级) | 87 HRB | 87 HRB |
| 疲劳强度 | ~23,000 psi | ~159 MPa |
Typical values per ASTM B211 and AMS 4122 standards
5. 物理特性
| 财产 | 价值 |
|---|---|
| 密度 | 3.00 g/cm³ (0.108 磅/立方英寸) |
| 熔点 | 890 – 1180°F (477 – 638°C) |
| 电导率 | 33% 国际化学学会 |
| Machinability Rating | 70% of 2011 合金 |
| Elastic Modulus | 71 GPa (10,300 克西) |
Physical properties of 7075 aluminum alloy
6. 规格 & 标准
Our 7075-T6 aluminum round bars are manufactured and tested in full compliance with major international standards:
- ASTM B211 – 铝及铝合金棒材标准规范, 杆, 和电线
- ASTM B221 – 铝和铝合金挤压棒材的标准规范, 棒, 型材, 和管
- 自动化管理系统 4122 - 铝合金, 7075, Bar, 杆, 和电线
- 自动化管理系统 4123 - 铝合金, 7075, Bar, 杆, 和电线 (Cold Finished)
- QQ-A-225/9 – Federal Specification for Aluminum Alloy 7075 Bar, 杆, 和电线
- 在 573 / 在 755 – European Standards for Aluminum and Aluminum Alloys
Color Marking: Ends painted Black for easy identification
7. 尺寸范围 & 定制化
| 范围 | 范围 |
|---|---|
| 直径 | 5 毫米 - 350 毫米 (0.20” – 14”) |
| 长度 | 1,000 毫米 - 6,000 毫米 (可定制长度) |
| Production Method | Extruded or Cold Finished |
| 表面处理 | 铣削加工, 阳极氧化, or coated |
| 宽容 | Per ASTM standards; 可根据要求提供更严格的公差 |
可根据要求定制尺寸和规格.
8. 应用领域
The 7075-T6 aluminum round bar is the material of choice for high-stress, high-reliability environments :
航天 & Defense
- Aircraft structural components and airframes
- Fittings, 齿轮, 轴, and fuse parts
- Missile components and landing gear parts
- High-stress airframe structures and bulkheads
汽车 & Motorsports
- High-performance chassis and suspension components
- Racing vehicle structural parts
- Drive shafts and transmission components
Industrial & Mechanical Engineering
- High-stress mechanical parts and precision molds
- Robotic arms and automation equipment
- Hydraulic valve bodies and regulating valves
- Tooling, 固定装置, and jigs
Sporting Goods & Consumer
- High-performance bicycle frames and wheels
- Climbing equipment and golf club heads
Semiconductor & Medical Equipment
- Precision tooling for semiconductor manufacturing
- Medical device components requiring high strength and stability
9. Important Considerations
Machining Guidelines
7075-T6 has a machinability rating of approximately 70% of 2011 合金 . For automatic screw machine operations, 7075 in the T6 condition is rated between 75% 和 85% of 2011 . Sharp tooling and proper coolant application are recommended to achieve optimal surface finishes and dimensional accuracy.
可焊性
Arc and gas welding are not recommended 为了 7075 aluminum due to its susceptibility to cracking and stress corrosion in the heat-affected zone . Spot or flash welding may be used in limited applications . For assemblies requiring joining, mechanical fastening or adhesive bonding are preferred alternatives.
Corrosion Protection
Due to its high zinc content, 7075-T6 has lower corrosion resistance than 6000-series alloys . For exposure to corrosive or high-moisture environments, protective anodizing, 覆层 (Alclad), or organic coatings are strongly recommended . The T6 (peak aging) temper is most susceptible to stress corrosion cracking; over-aged tempers such as T7351 offer improved SCC resistance at a moderate strength reduction .
Material Certification
Full material test reports (MTRs) with lot traceability are available upon request .
10. Why Choose Our 7075-T6 Aluminum Round Bar?
- 久经考验的品质 – Manufactured to strict ASTM, 自动化管理系统, and federal specifications with full traceability
- Wide Inventory – Extensive stock of diameters and lengths ensures fast delivery
- 技术专长 – Our engineering team provides expert material selection and application support
- 定制解决方案 – Flexible customization for diameter, 长度, 宽容, and surface treatment
- 有竞争力的定价 – Direct manufacturing and efficient supply chain deliver premium quality at competitive prices
- Reliability – 7075-T6 ensures long service life, lower failure risk, and reduced maintenance costs
11. 立即获取报价
Contact our sales team to discuss your 7075-T6 aluminum round bar requirements. Whether you need standard stock sizes or custom specifications, we are ready to deliver the high-performance aluminum solutions your mission-critical applications demand.
所有数据和规格仅供参考，不用于设计用途. Mechanical properties are typical values and may vary with dimensions and processing. 具体应用需求请咨询我们的技术团队.
