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R58150 Titanium vs. ACI-ASTM CH20 Steel

R58150 titanium belongs to the titanium alloys classification, while ACI-ASTM CH20 steel belongs to the iron alloys. There are 25 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 ACI-ASTM CH20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
200
Elongation at Break, % 13
38
Fatigue Strength, MPa 330
290
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 52
78
Tensile Strength: Ultimate (UTS), MPa 770
610
Tensile Strength: Yield (Proof), MPa 550
350

Thermal Properties

Latent Heat of Fusion, J/g 410
310
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1760
1410
Melting Onset (Solidus), °C 1700
1430
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 8.4
15

Otherwise Unclassified Properties

Base Metal Price, % relative 48
20
Density, g/cm3 5.4
7.8
Embodied Carbon, kg CO2/kg material 31
3.7
Embodied Energy, MJ/kg 480
53
Embodied Water, L/kg 150
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
200
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 32
25
Strength to Weight: Axial, points 40
22
Strength to Weight: Bending, points 35
21
Thermal Shock Resistance, points 48
15

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.2
Chromium (Cr), % 0
22 to 26
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.1
54.7 to 66
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 14 to 16
0 to 0.5
Nickel (Ni), % 0
12 to 15
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 83.5 to 86
0