Magnesium PE, Photoengraving Grade,E FOUR

### **Product Datasheet: Magnesium PE (Photoengraving Grade)** **High-Purity Magnesium for Precision Photoengraving Applications** --- #### **1. Overview** Magnesium PE (Photoengraving Grade) is a specially refined high-purity magnesium alloy optimized for photochemical machining and engraving applications. This grade features exceptionally uniform microstructure and controlled chemical composition that enables precise etching characteristics with superior edge quality and resolution. The material's light weight, excellent etchability, and environmental advantages make it the preferred choice for high-precision engraving applications in printing and decorative industries. --- #### **2. Key Features & Advantages** - **Superior Etching Quality:** Produces sharp, clean edges with minimal undercut - **High Purity:** Controlled composition ensures consistent etching performance - **Lightweight:** Easy handling and processing compared to traditional materials - **Rapid Etching Speed:** Higher etching rates than copper or zinc - **Environmental Safety:** Non-toxic etching byproducts - **Excellent Flatness:** Superior dimensional stability for precision work - **Cost-Effective:** Lower material and processing costs compared to alternatives --- #### **3. Chemical Composition (Weight %)** | Element | Mg (Balance) | Mn (max) | Fe (max) | Cu (max) | Ni (max) | Si (max) | Other (max) | |---------------|--------------|------------|------------|------------|------------|------------|-------------| | **Content (%)** | >99.8 | 0.01 | 0.002 | 0.001 | 0.001 | 0.01 | 0.05 total | *Note: The ultra-low impurity content, particularly iron, copper, and nickel, is critical for achieving uniform etching characteristics and preventing localized corrosion.* --- #### **4. Typical Physical & Mechanical Properties** | Property | Value | Condition / Remarks | |---------------------------|------------------------------|---------------------| | **Density** | 1.74 g/cm³ (0.063 lb/in³) | | | **Melting Point** | 650°C (1202°F) | | | **Thermal Conductivity** | 156 W/m·K | At 25°C | | **Coefficient of Thermal Expansion** | 25.2 × 10⁻⁶/°C | 20-100°C | | **Tensile Strength (UTS)**| 160-200 MPa (23-29 ksi) | | | **Yield Strength (TYS)** | 90-120 MPa (13-17 ksi) | 0.2% offset | | **Elongation** | 10-20% | In 2 inches | | **Surface Roughness** | 0.1-0.3 μm Ra | As supplied | | **Hardness** | 35-45 HB | | --- #### **5. International Standards & Specifications** Magnesium PE Grade typically conforms to: - **ASTM B92/B92M:** Standard Specification for Unalloyed Magnesium - **ASTM B107/B107M:** Specification for Magnesium-Alloy Extruded Products - **DIN 9719:** Magnesium sheets and plates for photoengraving - **ISO 3116:** Wrought magnesium and magnesium alloys - **Customer-Specific Specifications:** Often tailored to individual etching requirements --- #### **6. Applications** - **Printing Industry:** - Printing plates for flexographic and letterpress printing - Embossing dies and cylinders - Anilox rolls - **Decorative Applications:** - Nameplates and control panels - Decorative trim and signage - Architectural elements - **Electronic Components:** - RF/EMI shields - Lead frames - Precision mechanical parts - **Security Features:** - Holographic origination masters - Security printing plates - Currency engraving --- #### **7. Processing & Fabrication Guidelines** - **Surface Preparation:** Requires degreasing and cleaning before photoresist application - **Photoresist Application:** Compatible with both liquid and dry film photoresists - **Etching Chemistry:** Typically uses nitric acid-based solutions or ferric nitrate - **Etching Conditions:** Room temperature to 40°C with agitation - **Etching Rate:** 20-50 μm/min depending on etchant concentration and temperature - **Resolution Capability:** Capable of producing features down to 25 μm - **Post-Processing:** May require neutralization and protective coating --- #### **8. Quality Assurance** - **Surface Quality:** Free from scratches, pits, and inclusions - **Dimensional Tolerance:** ±0.05 mm for thickness - **Flatness:** Typically <0.1 mm per 100 mm - **Microstructural Requirements:** Uniform grain structure (ASTM 6-8) - **Certification:** Mill certification with chemical analysis and mechanical properties --- **Disclaimer** This technical data is provided for informational purposes only. Optimal etching parameters may vary depending on specific equipment, chemistry, and application requirements. Users should conduct preliminary trials to determine ideal processing conditions for their particular application. Proper safety precautions must be followed when handling chemicals and processing magnesium materials.

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 3349 gallon liquid totes Special package is available on request.