4015-H18 Aluminum alloy,Aluminum 4015-H18 alloy,E FORU

### **Product Introduction: Aluminum 4015-H18 Alloy** **Overview** Aluminum 4015-H18 Alloy is a strain-hardened aluminum-silicon alloy in the H18 temper condition, representing a full-hard state achieved through extensive cold working. This temper provides maximum strength and hardness while maintaining minimal ductility. The H18 condition is specifically designed for applications requiring high stiffness, excellent wear resistance, and superior mechanical properties where formability is not a primary requirement. --- ### **1. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 0.6 - 1.2 | | **Iron (Fe)** | 0.4 - 0.8 | | **Copper (Cu)** | ≤ 0.10 | | **Manganese (Mn)** | 0.05 - 0.20 | | **Magnesium (Mg)** | ≤ 0.10 | | **Zinc (Zn)** | ≤ 0.10 | | **Chromium (Cr)** | ≤ 0.05 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | --- ### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.71 g/cm³ | | **Melting Range** | 640 - 655 °C | | **Electrical Conductivity** | 42-47% IACS | | **Thermal Conductivity** | 150-170 W/m·K | | **Coefficient of Thermal Expansion** | 23.3 × 10⁻⁶/°C | | **Modulus of Elasticity** | 70 GPa | | **Specific Heat Capacity** | 0.90 J/g·°C | --- ### **3. Mechanical Properties (H18 Temper Condition)** | Property | Value Range | |----------|-------------| | **Tensile Strength** | 180-220 MPa | | **Yield Strength (0.2% Offset)** | 160-200 MPa | | **Elongation (in 50mm)** | 2-5% | | **Hardness (Brinell)** | 50-60 HB | | **Shear Strength** | 115-135 MPa | | **Fatigue Strength** | 90-105 MPa | | **Bend Radius (90°)** | 2-3t | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4015-H18 | | **European Standard (EN)** | EN AW-4015-H18 | | **ISO** | AlSi1 H18 (ISO 209) | | **UNS** | A94015 | | **ASTM** | B209 | | **GB/T** | 4015 H18 | --- ### **5. Product Applications** **High-Strength Structural Components:** - Structural supports and braces - Reinforcing members - Load-bearing panels - Chassis components - Frame elements **Electrical and Electronic Applications:** - High-strength busbars - Electrical enclosures and housings - Switchgear components - Transformer shields - Power distribution parts **Transportation and Automotive:** - Vehicle structural reinforcements - Truck body panels - Trailer components - Railway structural parts - Aircraft interior components **Industrial and Machinery:** - Machine guard panels - Equipment covers and shields - Industrial flooring - Conveyor components - Platform walkways --- ### **6. Key Characteristics & Advantages** - **Maximum Strength**: Full-hard condition with highest achievable strength - **Excellent Stiffness**: Superior resistance to bending and deformation - **High Wear Resistance**: Excellent surface hardness for abrasive environments - **Good Fatigue Performance**: Suitable for high-cycle fatigue applications - **Superior Spring Properties**: Excellent for spring and clip applications - **Dimensional Stability**: Outstanding flatness and shape retention - **Weight Optimization**: Maximum strength-to-weight ratio in strain-hardened condition --- ### **7. H18 Temper Specific Features** **Mechanical Performance:** - Full-hard condition with maximum strength - Very limited formability, suitable only for simple bends - Excellent spring characteristics and resistance to permanent set - High surface hardness providing good abrasion resistance - Consistent mechanical properties throughout the material **Manufacturing Advantages:** - Predictable and consistent springback - Excellent blanking and shearing characteristics - Good machinability with proper tooling and techniques - Minimal distortion during fabrication processes - Superior surface quality for finishing operations --- ### **8. Processing Guidelines** - **Forming**: Limited to very simple bends with minimum radius of 2t - **Annealing**: Requires full annealing at 345°C if additional forming is necessary - **Joining**: Can be welded using TIG and MIG methods with proper procedure control - **Machining**: Use sharp, positive rake tools with adequate cooling and lubrication - **Finishing**: Excellent base for anodizing, painting, and other surface treatments - **Handling**: Excellent resistance to denting and mechanical damage during processing **Disclaimer:** The information provided is for reference purposes only. The H18 temper offers maximum strength with very limited formability, making it suitable for applications where stiffness and strength are paramount. Properties may vary depending on manufacturing processes, product form, and thickness. For critical applications, consult technical data sheets from material suppliers and conduct appropriate testing. The material can be annealed to softer tempers if additional formability is required for fabrication processes.

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 1739 gallon liquid totes Special package is available on request.