Short answer: Titanium (4.5 g/cm³) is denser but far stronger and naturally corrosion-proof; magnesium (1.7 g/cm³) is the lightest structural metal but needs protection and is lower in strength. Choose titanium for harsh, high-load service and magnesium where mass saving dominates.
At a Glance
Density & Strength
Magnesium is ~2.6× lighter than titanium, but titanium Gr5 reaches ~900 MPa versus ~300 MPa for high-strength Mg. Background on titanium is in Titanium Grades Guide e Titanium Supplier; magnesium stock is in Magnesium Supplier.
Corrosion & Cost
Titanium shrugs off seawater and chemicals with no coating — see Metal Corrosion Resistance Guide — while magnesium must be coated (Metal Surface Treatment Guide). Titanium costs more but lasts; magnesium wins on mass and price.
Which to Choose
Medical, marine, aero and chemical duty → titanium. Mass-critical auto/3C brackets → magnesium. The Titanium Vs Steel piece frames titanium against heavier metals; fatigue matters in Metal Fatigue Endurance Limit.
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Perguntas frequentes
Magnesium is much lighter — about 1.74 g/cm³ versus titanium’s 4.51 g/cm³, roughly 2.6× less mass.
Yes, considerably. Titanium Gr5 reaches ~900 MPa tensile versus ~300 MPa for high-strength magnesium alloys.
Titanium corrodes far less and needs no coating in most environments; magnesium is reactive and must be protected or used as a sacrificial anode.
Yes. HXSCO supplies titanium (Gr2/Gr5 and more) and magnesium (AZ31B, AZ91D, WE43) with certificates.
Compare Titanium & Magnesium with HXSCO
HXSCO supplies titanium and magnesium grades for weight-critical and corrosion-service parts. Send your spec for a quote and material recommendation.