1235-H19 Aluminum alloy,Aluminum 1235-H19 alloy,E FORU

### **1235-H19 Aluminum Alloy Product Introduction** **1. Overview** 1235-H19 is an extra-hard strain-hardened temper of a high-purity aluminum alloy from the 1xxx series, representing the ultimate strength condition achievable through cold working processes. The "H19" temper designation indicates that the material has been strain-hardened beyond the conventional full-hard condition (H18) to achieve exceptional mechanical strength while maintaining the essential characteristics of pure aluminum. This specialized temper is particularly suitable for applications demanding extreme rigidity, dimensional stability, and superior strength-to-weight ratio in foil and thin sheet applications. **2. Chemical Composition (Typical, % by Weight)** The composition maintains high-purity standards with controlled impurities. | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | ≥99.35 | | **Iron (Fe)** | ≤0.40 | | **Silicon (Si)** | ≤0.25 | | **Copper (Cu)** | ≤0.05 | | **Manganese (Mn)** | ≤0.05 | | **Zinc (Zn)** | ≤0.06 | | **Other Elements (Each)** | ≤0.03 | | **Other Elements (Total)** | ≤0.10 | *Note: The high purity base composition enables optimal performance in specialized applications requiring both material purity and extreme mechanical strength.* **3. Physical Properties** | Property | Value | |----------|-------| | **Density** | 2.71 g/cm³ | | **Melting Point** | 646-657°C | | **Electrical Conductivity** | 61% IACS | | **Thermal Conductivity** | 230 W/(m·K) | | **Coefficient of Thermal Expansion** | 23.4 × 10⁻⁶/K (20-100°C) | | **Modulus of Elasticity** | 69 GPa | **4. Mechanical Properties (Typical for H19 Temper)** The H19 temper provides the ultimate strength characteristics for 1235 aluminum. | Property | Value | |----------|-------| | **Tensile Strength** | 165-195 MPa | | **Yield Strength (0.2% Offset)** | 155-185 MPa | | **Elongation (% in 50mm)** | 1.5-4% | | **Hardness (Brinell)** | 46-52 HB | *Key Characteristics of H19 Temper:* * **Ultimate Strength**: Highest mechanical strength achievable in the 1235 series * **Exceptional Rigidity**: Maximum resistance to deformation under load * **Minimal Formability**: Suitable only for very limited forming operations * **Superior Flatness**: Excellent dimensional stability for precision applications **5. Product Applications** 1235-H19 is primarily supplied as ultra-thin foil and specialty thin sheet for demanding applications. * **Advanced Packaging**: High-strength foil for rigid packaging and laminates * **Electronics**: Precision components, advanced heat sinks, and shielding applications * **Electrical Industry**: Extra-stiff conductive elements and specialized components * **Industrial Components**: Precision shims, spacers, and high-tolerance parts * **Printing Industry**: High-durability printing plates and graphic arts applications * **Consumer Electronics**: Durable casings and structural components in thin gauges * **Specialty Products**: High-strength foil products requiring maximum stiffness **6. International Standards** 1235-H19 is recognized under major international standardization systems. | Standard System | Designation | |-----------------|-------------| | **ISO** | Al99.35 H19 | | **EN (Europe)** | EN AW-1235 H19 | | **ASTM (USA)** | ASTM B479 1235 H19 | | **UNS (USA)** | UNS A91235 H19 | | **JIS (Japan)** | A1235 H19 | | **GB (China)** | 1235 H19 | --- **Summary** **1235-H19 Aluminum Alloy** represents the **extra-hard temper** in the 1235 aluminum series, providing the **ultimate strength achievable through advanced strain hardening processes** in foil and thin sheet applications. This specialized temper delivers mechanical properties that significantly exceed conventional full-hard conditions, making it ideal for applications where maximum rigidity, dimensional stability, and resistance to deformation are critical requirements in thin materials. While its formability is extremely limited, the H19 condition offers unparalleled strength characteristics while maintaining the inherent benefits of the high-purity 1235 base alloy, including good corrosion resistance and surface quality. The combination of these properties makes 1235-H19 particularly valuable for advanced packaging solutions, precision electronic components, high-stability electrical applications, and other demanding fields where conventional aluminum tempers cannot meet the rigorous strength and stability requirements in thin gauges. This temper serves specialized applications that demand the absolute maximum performance from high-purity aluminum in ultra-thin applications.

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 1471 gallon liquid totes Special package is available on request.