Magnesium Alloy-AZ91
                        
                        Magnesium Alloy
                        
                            
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                            Key Features:
                            1. Ultra-lightweight (about 30% lighter than aluminum alloys)
2. Good castability (excellent fluidity)
3. Moderate strength (tensile strength ≥ 230 MPa)
4. Poor corrosion resistance (protective surface coatings required)