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R58150 Titanium vs. SAE-AISI 8115 Steel

R58150 titanium belongs to the titanium alloys classification, while SAE-AISI 8115 steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R58150 titanium and the bottom bar is SAE-AISI 8115 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
190
Elongation at Break, % 13
15
Fatigue Strength, MPa 330
320
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 52
73
Shear Strength, MPa 470
370
Tensile Strength: Ultimate (UTS), MPa 770
610
Tensile Strength: Yield (Proof), MPa 550
500

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 320
410
Melting Completion (Liquidus), °C 1760
1460
Melting Onset (Solidus), °C 1700
1420
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 8.4
12

Otherwise Unclassified Properties

Base Metal Price, % relative 48
2.3
Density, g/cm3 5.4
7.8
Embodied Carbon, kg CO2/kg material 31
1.5
Embodied Energy, MJ/kg 480
19
Embodied Water, L/kg 150
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
86
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
660
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 32
24
Strength to Weight: Axial, points 40
21
Strength to Weight: Bending, points 35
20
Thermal Shock Resistance, points 48
19

Alloy Composition

Carbon (C), % 0 to 0.1
0.13 to 0.18
Chromium (Cr), % 0
0.3 to 0.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
97.4 to 98.4
Manganese (Mn), % 0
0.7 to 0.9
Molybdenum (Mo), % 14 to 16
0.080 to 0.15
Nickel (Ni), % 0
0.2 to 0.4
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 83.5 to 86
0