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R58150 Titanium vs. S40945 Stainless Steel

R58150 titanium belongs to the titanium alloys classification, while S40945 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R58150 titanium and the bottom bar is S40945 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
190
Elongation at Break, % 13
25
Fatigue Strength, MPa 330
160
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 52
75
Shear Strength, MPa 470
270
Tensile Strength: Ultimate (UTS), MPa 770
430
Tensile Strength: Yield (Proof), MPa 550
230

Thermal Properties

Latent Heat of Fusion, J/g 410
270
Maximum Temperature: Mechanical, °C 320
710
Melting Completion (Liquidus), °C 1760
1450
Melting Onset (Solidus), °C 1700
1410
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 8.4
10

Otherwise Unclassified Properties

Base Metal Price, % relative 48
8.0
Density, g/cm3 5.4
7.8
Embodied Carbon, kg CO2/kg material 31
2.2
Embodied Energy, MJ/kg 480
31
Embodied Water, L/kg 150
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
89
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 40
15
Strength to Weight: Bending, points 35
16
Thermal Shock Resistance, points 48
15

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 0
10.5 to 11.7
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
85.1 to 89.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 14 to 16
0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.18 to 0.4
Nitrogen (N), % 0 to 0.050
0 to 0.030
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 83.5 to 86
0.050 to 0.2