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R58150 Titanium vs. SAE-AISI 4340 Steel

R58150 titanium belongs to the titanium alloys classification, while SAE-AISI 4340 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 4340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
190
Elongation at Break, % 13
12 to 22
Fatigue Strength, MPa 330
330 to 740
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 52
73
Shear Strength, MPa 470
430 to 770
Tensile Strength: Ultimate (UTS), MPa 770
690 to 1280
Tensile Strength: Yield (Proof), MPa 550
470 to 1150

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 320
430
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
13

Otherwise Unclassified Properties

Base Metal Price, % relative 48
3.5
Density, g/cm3 5.4
7.8
Embodied Carbon, kg CO2/kg material 31
1.7
Embodied Energy, MJ/kg 480
22
Embodied Water, L/kg 150
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
79 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
590 to 3490
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 32
24
Strength to Weight: Axial, points 40
24 to 45
Strength to Weight: Bending, points 35
22 to 33
Thermal Shock Resistance, points 48
20 to 38

Alloy Composition

Carbon (C), % 0 to 0.1
0.38 to 0.43
Chromium (Cr), % 0
0.7 to 0.9
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
95.1 to 96.3
Manganese (Mn), % 0
0.6 to 0.8
Molybdenum (Mo), % 14 to 16
0.2 to 0.3
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 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 83.5 to 86
0