AZ31B Magnesium Alloy Sheet & Rod: Lightweight Solutions for Multifunctional Engineering

As a non-heat-treatable alloy, AZ31B gains its stable performance through rolling, forging, and annealing processes. Its core composition—2.5–3.5% aluminum, 0.7–1.3% zinc, 0.20–1.0% manganese, and magnesium as the remainder—ensures good strength and ductility. With a density of only 1.78g/cm³ (2/3 of aluminum, 1/4 of steel), both sheet and rod deliver exceptional specific strength, reducing equipment weight by 20–30% while maintaining sufficient load-bearing capacity.

AZ31B magnesium sheet and rod share core advantages but differ in form and application scenarios. The sheet features a flat, smooth surface and good formability, suitable for warm stamping, rolling, and cutting. It has a tensile strength of 225–260MPa (depending on temper) and elongation of 5–15%, ideal for manufacturing large-area, thin-walled components that require lightweight and structural stability.

In contrast, AZ31B magnesium rod boasts excellent machinability and toughness, easy to process into precision shafts, fasteners, and custom mechanical parts. It maintains the same density and corrosion resistance as the sheet, with tensile strength up to 260MPa in extruded state, offering reliable performance in load-bearing and transmission components.

Both products excel in damping, electromagnetic shielding, and environmental friendliness. Their superior damping property absorbs vibration and reduces noise, making them perfect for quiet-operation components. The natural oxide film on their surface provides basic corrosion resistance, which can be further enhanced by anodizing, micro-arc oxidation, or coating for harsh environments.