6013-T8 Aluminum alloy,Aluminum 6013-T8 alloy,E FORU

### **Product Introduction: 6013-T8 Aluminum Alloy** **6013-T8 Aluminum Alloy** is a high-strength, heat-treatable aluminum-magnesium-silicon-copper (Al-Mg-Si-Cu) alloy that has undergone solution heat treatment followed by cold working and artificial aging to achieve enhanced mechanical properties. The T8 temper provides superior strength and improved stress corrosion resistance compared to other tempers, making it suitable for highly stressed structural applications in aerospace and defense industries. --- ### **1. International Standards** 6013-T8 Aluminum Alloy is recognized under the following international standards: - **AA (Aluminum Association, USA):** AA 6013, Temper T8 - **UNS (Unified Numbering System):** UNS A96013 - **AMS (Aerospace Material Specification):** AMS 4334 - **ASTM:** ASTM B209 (Plate), ASTM B210 (Drawn Tube) - **ISO (International Organization for Standardization):** AlMg0.8SiCu - T8 --- ### **2. Chemical Composition** The chemical composition limits (in weight percentage) are identical to other 6013 tempers: | Element | Content (%) | |:---------|:------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 0.60 - 1.0 | | **Magnesium (Mg)** | 0.80 - 1.2 | | **Manganese (Mn)** | 0.20 - 0.8 | | **Copper (Cu)** | 0.60 - 1.1 | | **Iron (Fe)** | ≤ 0.50 | | **Chromium (Cr)** | 0.10 - 0.30 | | **Zinc (Zn)** | ≤ 0.25 | | **Titanium (Ti)** | ≤ 0.10 | | **Others (each)** | ≤ 0.05 | | **Others (total)** | ≤ 0.15 | **Key Takeaway:** The carefully balanced composition with copper (0.60-1.1%) and magnesium (0.80-1.2%) enables effective precipitation hardening, while chromium enhances stress corrosion resistance. The T8 processing optimizes the strengthening mechanism through controlled cold work. --- ### **3. Physical Properties** The typical physical properties of 6013-T8 aluminum alloy are: | Property | Metric Value | Imperial Value | |:----------|:-------------|:---------------| | **Density** | 2.71 g/cm³ | 0.0979 lb/in³ | | **Melting Range** | 555 - 650 °C | 1031 - 1202 °F | | **Coefficient of Thermal Expansion** | 23.0 × 10⁻⁶/°C (20-100°C) | 12.8 × 10⁻⁶/°F (68-212°F) | | **Thermal Conductivity** | 140 - 160 W/m·K | 810 - 925 BTU·in/(hr·ft²·°F) | | **Electrical Conductivity** | 34-38% IACS | 34-38% IACS | | **Modulus of Elasticity** | 70.5 GPa | 10,220 ksi | | **Shear Modulus** | 26.5 GPa | 3,840 ksi | | **Poisson's Ratio** | 0.33 | 0.33 | --- ### **4. Mechanical Properties (T8 Temper)** The T8 temper provides enhanced strength through cold working after solution heat treatment: **Typical Mechanical Properties:** - **Tensile Strength:** 415 - 455 MPa (60 - 66 ksi) - **Yield Strength (0.2% Offset):** 380 - 420 MPa (55 - 61 ksi) - **Elongation (% in 50mm):** 6-9% - **Compressive Yield Strength:** 370 MPa (54 ksi) - **Shear Strength:** 255 MPa (37 ksi) - **Bearing Strength:** 690 MPa (100 ksi) [e/D=2.0] - **Fatigue Strength:** 130 MPa (19 ksi) [Rotating Beam, 5×10⁸ cycles] - **Hardness (Brinell):** 125 - 135 HB - **Fracture Toughness (KIC):** 26-30 MPa√m --- ### **5. Product Applications** 6013-T8 is used in applications requiring the highest strength and reliability: - **Aerospace Structures:** - Aircraft wing skins and stringers - Fuselage frames and longerons - Spacecraft structural components - Missile airframes and components - **Defense Applications:** - Armor plate components - Military vehicle structural members - Weapon system mounts - Ballistic protection systems - **High-Performance Transportation:** - Racing vehicle chassis components - High-speed train structural members - Marine craft hull components - **Special Applications:** - Pressure vessels - High-stress mechanical components - Optical mounting systems requiring stability --- ### **6. Key Characteristics & Advantages** - **Enhanced Strength Properties:** The T8 temper provides the highest strength levels achievable with 6013 alloy through combined cold working and aging. - **Improved Stress Corrosion Resistance:** Superior resistance to stress corrosion cracking compared to T6 temper, particularly in short transverse direction. - **Excellent Fatigue Performance:** Enhanced fatigue strength due to cold working-induced compressive surface stresses. - **Good Damage Tolerance:** Maintains good fracture toughness despite higher strength levels. - **Dimensional Stability:** Cold working provides improved stability for precision applications. - **Superior Strength-to-Weight Ratio:** One of the highest among aluminum alloys with good corrosion resistance. - **Enhanced Wear Resistance:** Cold worked structure provides improved surface hardness and wear characteristics. --- ### **7. Processing Characteristics** **Heat Treatment Cycle (T8):** - Solution Heat Treatment: 510-530°C (950-985°F) for 30-60 minutes - Quenching: Rapid water quench to room temperature - Cold Working: 3-8% permanent deformation (rolling, stretching, or drawing) - Artificial Aging: 120-160°C (250-320°F) for 12-24 hours **Machining Performance:** - **Machinability Rating:** 65-75 (compared to 2011-T3 as 100) - Requires more power for machining than T6 temper - Produces good surface finish with proper tooling - Tool life slightly reduced compared to softer tempers **Forming Characteristics:** - Limited formability in T8 temper - Severe forming should be done in annealed (O) condition - Springback significant due to high yield strength - Not recommended for complex forming operations --- ### **8. Corrosion Performance** - **General Corrosion:** Good resistance to atmospheric exposure - **Stress Corrosion Cracking:** Excellent resistance, superior to T6 temper - **Exfoliation Corrosion:** Good resistance in properly processed material - **Intergranular Corrosion:** Resistant when properly aged after cold working **Protection Methods:** - Anodizing per MIL-A-8625 - Chemical conversion coatings per MIL-DTL-5541 - Primer and paint systems - Suitable for various coating applications --- ### **9. Quality and Certification** - **Aerospace Compliance:** Meets AMS 4334 requirements for T8 temper - **Military Standards:** Compliant with relevant MIL specifications - **Quality Assurance:** Full traceability and certification available - **Testing:** Comprehensive mechanical testing and NDT capabilities --- ### **10. Comparative Advantages** **vs. 6013-T6:** - Higher strength and hardness - Better stress corrosion cracking resistance - Improved fatigue performance - Enhanced dimensional stability **vs. 2024-T8:** - Superior corrosion resistance - Better stress corrosion cracking resistance - Comparable strength levels - Improved weldability **vs. 7075-T6:** - Better corrosion resistance - Superior stress corrosion cracking resistance - Good compromise for applications requiring both strength and corrosion resistance In summary, **6013-T8 Aluminum Alloy** represents the peak strength condition for the 6013 alloy system, offering an exceptional balance of high mechanical properties and good corrosion resistance. The T8 temper process, incorporating controlled cold working after solution heat treatment, produces a material ideally suited for highly stressed aerospace and defense applications where maximum strength, fatigue resistance, and reliability are paramount requirements.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1959 gallon liquid totes Special package is available on request.