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Grade 2 Titanium vs. S40930 Stainless Steel

Grade 2 titanium belongs to the titanium alloys classification, while S40930 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade 2 titanium and the bottom bar is S40930 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
160
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 23
23
Fatigue Strength, MPa 250
130
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 38
75
Shear Strength, MPa 270
270
Tensile Strength: Ultimate (UTS), MPa 420
430
Tensile Strength: Yield (Proof), MPa 360
190

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Maximum Temperature: Mechanical, °C 320
710
Melting Completion (Liquidus), °C 1660
1450
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 22
25
Thermal Expansion, µm/m-K 9.0
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 37
8.5
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
2.3
Embodied Energy, MJ/kg 510
32
Embodied Water, L/kg 110
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
80
Resilience: Unit (Modulus of Resilience), kJ/m3 600
94
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 26
16
Strength to Weight: Bending, points 28
16
Thermal Diffusivity, mm2/s 8.9
6.7
Thermal Shock Resistance, points 32
16

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0
10.5 to 11.7
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
84.7 to 89.4
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.080 to 0.75
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 98.9 to 100
0.050 to 0.2
Residuals, % 0 to 0.4
0