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R58150 Titanium vs. SAE-AISI 4340M Steel

R58150 titanium belongs to the titanium alloys classification, while SAE-AISI 4340M steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R58150 titanium and the bottom bar is SAE-AISI 4340M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
190
Elongation at Break, % 13
6.0
Fatigue Strength, MPa 330
690
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 52
72
Shear Strength, MPa 470
1360
Tensile Strength: Ultimate (UTS), MPa 770
2340
Tensile Strength: Yield (Proof), MPa 550
1240

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 320
430
Melting Completion (Liquidus), °C 1760
1440
Melting Onset (Solidus), °C 1700
1400
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 8.4
13

Otherwise Unclassified Properties

Base Metal Price, % relative 48
3.9
Density, g/cm3 5.4
7.8
Embodied Carbon, kg CO2/kg material 31
1.9
Embodied Energy, MJ/kg 480
26
Embodied Water, L/kg 150
55

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
4120
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 40
84
Strength to Weight: Bending, points 35
51
Thermal Shock Resistance, points 48
70

Alloy Composition

Carbon (C), % 0 to 0.1
0.38 to 0.43
Chromium (Cr), % 0
0.7 to 1.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
93.3 to 94.8
Manganese (Mn), % 0
0.65 to 0.9
Molybdenum (Mo), % 14 to 16
0.35 to 0.45
Nickel (Ni), % 0
1.7 to 2.0
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.012
Silicon (Si), % 0
1.5 to 1.8
Sulfur (S), % 0
0 to 0.012
Titanium (Ti), % 83.5 to 86
0
Vanadium (V), % 0
0.050 to 0.1