Molybdenum foil’s mechanical properties include high strength, moderate ductility, hardness, and creep resistance, making it suitable for diverse applications. 1) Tensile Strength: 500-1000 MPa at room temperature, with cold-rolled foil (800-1000 MPa) surpassing hot-rolled (500-700 MPa), supporting semiconductor substrates and aerospace parts. 2) Hardness: 150-200 HV, offering strong wear resistance for molds and furnace components. 3) Ductility: Elongation of 10-20% (higher in hot-rolled, lower in cold-rolled), enabling forming but with poor low-temperature toughness, prone to brittle fracture. 4) Elastic Modulus: 320 GPa, providing high rigidity and deformation resistance, ideal for precision components. 5) Poisson’s Ratio: 0.31, reflecting elastic behavior. 6) Fatigue Strength: 250-350 MPa, enduring cyclic loads, suitable for dynamic environments. 7) Creep Resistance: Maintains 100-200 MPa strength at 1000-2000°C, outperforming aluminum and copper, ideal for furnaces. Purity (≥99.95%) and processing affect properties, with high-purity cold-rolled foil offering higher strength and hot-rolled better toughness. Oxidation above 600°C requires vacuum protection to prevent performance degradation. Mechanical testing includes tensile, hardness, and fatigue tests, with microscopic analysis checking grain structure. Molybdenum foil’s mechanical properties ensure reliability in electronics, aerospace, and high-temperature applications, requiring optimized processing to balance strength and toughness.
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