进步
产品概述
铝圆棒 2024 is a high-strength aluminum-copper-magnesium (Al-Cu-Mg) alloy rod, one of the most important aerospace structural alloys. It offers very high strength, excellent fatigue resistance, and good machinability, making it the standard choice for aircraft structures, defense components, and high-performance mechanical parts. 我们的 2024 aluminum round bars are available in T4, T3511 and T851 tempers, produced per ASTM B211, QQ-A-225/6, 国标/T 3191 and EN 755 标准, with diameters from 3 毫米至 400 mm and custom lengths.
化学成分 (%), ASTM B211 / 国标/T 3190
铝 (铝): 90.7 – 94.7 (balance)
铜 (铜): 3.8 – 4.9 (principal alloying element)
镁 (镁): 1.2 – 1.8
锰 (锰): 0.3 – 0.9
和 (硅): 0.50 最大限度
铁 (铁): 0.50 最大限度
锌 (锌): 0.25 最大限度
铬 (铬): 0.10 最大限度
的 (钛): 0.15 最大限度
其他各: 0.05 最大限度, 其他总计: 0.15 最大限度
机械性能 (典型值, Bar)
Temper T4 (Solution Heat Treated & Naturally Aged): 抗拉强度 425-485 兆帕, 屈服强度 275-345 兆帕, 伸长 10-14%
Temper T3511 (T4 + Stress Relieved, Extruded): 抗拉强度 425-485 兆帕, 屈服强度 290-360 兆帕, 伸长 10-12%
Temper T851 (T6 + Stress Relieved, 高力量): 抗拉强度 455-510 兆帕, 屈服强度 370-420 兆帕, 伸长 4-6%
脾气O (退火): 抗拉强度 185-220 兆帕, 屈服强度 75-125 兆帕, 伸长 18-22%
硬度: 120 HB (T4)
疲劳强度: 138 兆帕 (T4, at 5×10⁸ cycles)
剪切强度: 280 兆帕 (T4)
物理特性
密度: 2.78 g/cm³ (0.100 磅/立方英寸)
熔点: 502-638℃ (935-1180°F)
导热系数: 121 带/(m·K) 25°C 时 (T4)
电导率: 30% 国际化学学会 (T4)
电阻率: 5.7 × 10⁻⁸ Ω·m
热膨胀系数: 22.9 × 10⁻⁶/K (20-100℃)
弹性模量: 73.1 GPa (10,600 克西)
Poisson Ratio: 0.33
规格
标准: ASTM B211, QQ-A-225/6, 国标/T 3191, 在 755-2 / 755-3, 自动化管理系统 4120, JIS H4040
直径: 3 毫米 – 400 毫米 (0.12″ – 15.7″)
长度: 1 米 – 12 米 (可定制切割)
脾气: 氧, T4, T3511, T851
类型: Extruded bar, rolled bar, drawn bar, precision ground bar
表面处理: 铣削加工, 明亮的, Drawn, Precision ground (h7-h9)
宽容: 直径: ±0.1毫米 (drawn) to ±1.0mm (extruded), Straightness: ≤1mm/m
Special: Aerospace certification documentation (AMS/QQ-A) available on request
主要特点 & 优点
- Very high strength – one of the strongest aluminum alloys, up to 485 MPa tensile
- Excellent fatigue resistance – proven performance in aircraft cyclic loading
- 高强度重量比 – the aerospace structural benchmark
- 良好的机械加工性 – suitable for complex precision-machined parts
- Heat treatable – T4 and T851 tempers for different strength levels
- Good toughness at moderate temperatures
- Consistent properties – solution heat treated and stress relieved
- Proven in service – decades of aerospace and defense applications
- Available in precision ground condition for exacting tolerances
- Full material certification and traceability
应用领域
- 航天 – aircraft structural parts, fuselage frames, wing components, ribs
- 紧固件 – aircraft bolts, 螺丝, 铆钉, 螺柱
- Defense – 导弹部件, ordnance parts, military hardware
- Mold tooling – mold bases, insert components, 刀架
- Precision machinery – 齿轮, 轴, valve stems, high-stress fasteners
- Automotive racing – suspension parts, drive components, chassis fittings
- Marine high-performance – propeller shafts, 配件 (with protection)
- 运动器材 – high-performance bicycle and climbing components
- 电子产品 – high-strength connectors, structural elements
- General engineering – high-strength shafts, 针脚, couplings, custom parts
质量控制 & 测试
我们的每一批 2024 aluminum round bars undergoes strict quality control:
化学分析: Spectrometer verification of Cu, 镁, Mn content
机械测试: 拉伸试验, 屈服强度测试, 伸长率测试, 硬度测试 (每脾气)
Heat Treatment Verification: Hardness and conductivity testing to verify T4/T851 treatment
Ultrasonic Testing: UT inspection per AMS 2630 for aerospace applications (on request)
Dimensional Inspection: 直径, roundness, straightness, and length checks
表面检测: 目视检查是否有划痕, laps, 坑, and seams
文档: 工厂测试证书 (MTC), heat treatment records, 物料追溯, 合格证书
包装 & 船运
包装: 标准出口包装 – bars bundled with steel straps, protective paper or film wrapping, wooden pallets or crates for heavy bundles; individual protective tubes for precision ground and aerospace-grade bars
标记: 合金, 脾气, 尺寸, 热数, 标准, 制造商标志
贸易条款: 离岸价格, 到岸价格, 病死率, 出厂前, 顺铂
支付: 电汇 (30% 订金, 70% 发货前), 即期信用证, 西联汇款, 贝宝 (样品订单)
交货时间: 标准尺寸有库存 – 3-7 天; 定制尺寸 – 15-30 天
起订量: 200 标准尺寸公斤; 定制订单可协商
装货港: 青岛, 上海, 天津, 宁波, 或按要求
为什么选择我们
随着超过 15 多年铝制造和出口经验, 我们是值得信赖的供应商 2024 aluminum round bars to aerospace, defense, and precision engineering companies in more than 50 国家. Our factory is equipped with modern extrusion, 绘画, heat treatment, and precision grinding lines, ensuring aerospace-grade quality and consistency. 我们拥有大量标准尺寸和脾气的库存，以便立即交货, and our experienced team can provide technical consultation, material certification support, and customized solutions for your specific applications. 立即联系我们获取有竞争力的报价!
