Stainless steel vs Titanium

Table of Contents

Titaniun Has Lower Density Then Stainless Steel Which Makes It 45% Lighter

Property	Titanium	Stainless Steel
Density	4.43 g/cm³	7.87 g/cm³
Density Comparison	45%	45%

Property	Martensitic Stainless Steels	Titanium Alloys
Hardness	High	Moderate
Work Hardening	Significant	Low
Tool Wear	High	Moderate
Cutting Speed	Low	Low
Machining Cost	Higher	Higher
Surface Finish	Good	Excellent
Heat Generation	High	Moderate
Coolant Requirement	High	Low

Property	Stainless Steel	Titanium
Strength	520 to 1,000 MPa	900 to 1,400 MPa , 20-40% higher strength

Environment	Titanium Corrosion Rate	Stainless Steel Corrosion Rate
Corrosion Resistance	Extremely resistant at room temp	Moderate resistance
Chloride Solution	0.0001 to 0.001	0.01 to 0.1
Seawater, Saltwater	0.0001 to 0.0005	0.005 to 0.1
Concentrated Nitric Acid	0.0001 to 0.0005	0.1 to 0.5
Sulfuric Acid 80% conc	0.0001 to 0.001	0.1 to 1
Pitting Resistance in Chlorides	Excellent Pitting Resistance	Good but less than Titanium
High Temp Oxidizing Environments	0.0001 to 0.001	0.001 to 0.01
Crevice Corrosion in Chlorides	Excellent Crevice Corrosion	Moderate Corrosion

SS Metal vs Titanium Hardness

SS Metal vs Titanium Hardness

Heat Resistance	Stainless Steel	Titanium
High-Temperature Alloys	Above 1,000°C to 1,832°F	Limited in Harsh Conditions
Air (Oxidizing Environments)	Up to 870°C – (1,598°F)	Up to ~600°C – (1,112°F)

Melting Point of SS Material Vs Ti Alloy

Material	Melting Point
Stainless Steel	1,400°C to 1,510°C (2,552°F to 2,752°F)
Titanium	1,668°C (3,034°F)

Titanium Alloy vs Alloy Steel Advantages

Titanium vs Stainless Steel Thermal Propertiesrt

Property	Titanium	Stainless Steel
Thermal Conductivity	16 W/m·K (low)	16-30 W/m·K (higher, varies by alloy)
Thermal Expansion	8.6 µm/m·°C (high)	15-17 µm/m·°C (moderate)

Common Applications of Stainless Steel and Titanium