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Grade 2 Titanium vs. S44700 Stainless Steel

Grade 2 titanium belongs to the titanium alloys classification, while S44700 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade 2 titanium and the bottom bar is S44700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
200
Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 23
23
Fatigue Strength, MPa 250
300
Poisson's Ratio 0.32
0.27
Reduction in Area, % 37
45
Shear Modulus, GPa 38
82
Shear Strength, MPa 270
380
Tensile Strength: Ultimate (UTS), MPa 420
600
Tensile Strength: Yield (Proof), MPa 360
450

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
480
Thermal Expansion, µm/m-K 9.0
11

Otherwise Unclassified Properties

Base Metal Price, % relative 37
18
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
3.6
Embodied Energy, MJ/kg 510
49
Embodied Water, L/kg 110
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
120
Resilience: Unit (Modulus of Resilience), kJ/m3 600
480
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 26
21
Strength to Weight: Bending, points 28
20
Thermal Shock Resistance, points 32
19

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.010
Chromium (Cr), % 0
28 to 30
Copper (Cu), % 0
0 to 0.15
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
64.9 to 68.5
Manganese (Mn), % 0
0 to 0.3
Molybdenum (Mo), % 0
3.5 to 4.2
Nickel (Ni), % 0
0 to 0.15
Nitrogen (N), % 0 to 0.030
0 to 0.020
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.2
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 98.9 to 100
0
Residuals, % 0 to 0.4
0