Magnesium AM100A-F, Cast，UNS M10100,E FOUR

### **Product Datasheet: Magnesium AM100A-F Cast Alloy (UNS M10100)** **Introduction** Magnesium AM100A-F is a high-strength magnesium casting alloy supplied in the as-cast condition. The "A" designates aluminum as the primary alloying element, "M" represents manganese, and "100" indicates approximately 10% aluminum content. The **-F temper** signifies that the material is used in the as-fabricated state without subsequent heat treatment after casting. This alloy offers a favorable balance of strength and ductility directly from the casting process, making it suitable for applications where heat treatment is not feasible or required. **Key Characteristics** - **Good Strength-Ductility Balance**: Provides reasonable mechanical properties in the as-cast condition - **Excellent Castability**: Suitable for various casting processes including sand and permanent mold casting - **Good Impact Resistance**: Maintains reasonable toughness for structural applications - **Adequate Corrosion Resistance**: When properly surface treated --- #### **1. Chemical Composition (Weight %)** The composition conforms to standard specifications for AM100A-F alloy: | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | 9.3 - 10.7 | | **Manganese (Mn)** | 0.10 - 0.30 | | **Zinc (Zn)** | ≤ 0.30 | | **Silicon (Si)** | ≤ 0.30 | | **Copper (Cu)** | ≤ 0.10 | | **Iron (Fe)** | ≤ 0.005 | | **Nickel (Ni)** | ≤ 0.01 | | **Other Elements** | ≤ 0.30 (each) | | **Total Impurities** | ≤ 0.50 | | **Magnesium (Mg)** | Remainder | --- #### **2. Physical Properties** | Property | Value | |----------|--------| | **Density** | 1.81 g/cm³ (0.065 lb/in³) | | **Melting Range** | 460 - 595°C (860 - 1105°F) | | **Thermal Conductivity** | 55-65 W/m·K | | **Coefficient of Thermal Expansion** | 25.8-26.2 µm/m·K (20-100°C) | | **Modulus of Elasticity** | 44-46 GPa (6.4-6.7 × 10⁶ psi) | --- #### **3. Mechanical Properties (Typical for As-Cast Condition)** Properties represent typical values for cast test bars: **Room Temperature Properties:** | Property | Value | |----------|--------| | **Tensile Strength, Ultimate** | 145-165 MPa (21,000-24,000 psi) | | **Tensile Strength, Yield (0.2% Offset)** | 83-97 MPa (12,000-14,000 psi) | | **Elongation** | 2-4% (in 2 inches) | | **Compressive Yield Strength** | 83-97 MPa (12,000-14,000 psi) | | **Hardness, Brinell** | 50-55 HB | | **Impact Strength (Charpy)** | 1.4-2.0 J (1.0-1.5 ft-lb) | --- #### **4. International Standards** AM100A-F is recognized in several international standards: - **ASTM Standards:** - **ASTM B80**: Standard Specification for Magnesium-Alloy Sand Castings - **ASTM B199**: Standard Specification for Magnesium-Alloy Permanent Mold Castings - **ASTM B403**: Standard Specification for Magnesium-Alloy Investment Castings - **SAE**: **SAE J465** - Wrought and Cast Magnesium Alloys - **AMS**: **AMS 4438** - Castings, Magnesium Alloy, Sand 9.5Al-0.13Mn (AM100A) As Cast - **UNS**: **M10100** - **ISO**: **ISO 16220** - Magnesium and magnesium alloys - Magnesium alloy ingots and castings --- #### **5. Product Applications** AM100A-F finds application in various industries where the as-cast properties meet design requirements: **Aerospace Applications:** - Non-critical aircraft components - Instrument housings and brackets - Interior structural components **Industrial Applications:** - Machinery components subject to moderate loads - Casing and housing applications - General engineering components requiring light weight **Commercial Applications:** - Commercial equipment housings - Material handling components --- #### **6. Manufacturing and Processing** **Casting Characteristics:** - Excellent fluidity and castability - Low tendency for hot tearing - Suitable for sand, permanent mold, and investment casting processes **Machinability:** - Excellent machining characteristics typical of magnesium alloys - Good surface finish achievable - Low cutting forces required **Joining:** - Can be welded using standard magnesium welding techniques - Suitable for mechanical fastening **Surface Protection:** - Requires standard magnesium surface treatments - Chromate conversion coatings recommended - Painting and powder coating applicable --- **Technical Note:** The mechanical properties listed are typical for separately cast test bars. Actual properties in production castings may vary depending on section size, casting design, and foundry practice. For applications requiring higher strength and improved ductility, the heat-treated version (AM100A-T6) is recommended. **Disclaimer:** This information is provided for reference purposes only. Designers should verify specific property requirements with the casting supplier and refer to the latest edition of applicable material specifications for detailed 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 3270 gallon liquid totes Special package is available on request.