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SAE-AISI 50B50 Steel vs. R58150 Titanium

SAE-AISI 50B50 steel belongs to the iron alloys classification, while R58150 titanium belongs to the titanium 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 SAE-AISI 50B50 steel and the bottom bar is R58150 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
140
Elongation at Break, % 22
13
Fatigue Strength, MPa 260
330
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
52
Shear Strength, MPa 370
470
Tensile Strength: Ultimate (UTS), MPa 590
770
Tensile Strength: Yield (Proof), MPa 370
550

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Maximum Temperature: Mechanical, °C 410
320
Melting Completion (Liquidus), °C 1460
1760
Melting Onset (Solidus), °C 1410
1700
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
48
Density, g/cm3 7.8
5.4
Embodied Carbon, kg CO2/kg material 1.4
31
Embodied Energy, MJ/kg 19
480
Embodied Water, L/kg 48
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
94
Resilience: Unit (Modulus of Resilience), kJ/m3 370
1110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
32
Strength to Weight: Axial, points 21
40
Strength to Weight: Bending, points 20
35
Thermal Shock Resistance, points 17
48

Alloy Composition

Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.48 to 0.53
0 to 0.1
Chromium (Cr), % 0.4 to 0.6
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 97.4 to 98.2
0 to 0.1
Manganese (Mn), % 0.75 to 1.0
0
Molybdenum (Mo), % 0
14 to 16
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
83.5 to 86