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ACI-ASTM CH20 Steel vs. Grade Ti-Pd17 Titanium

ACI-ASTM CH20 steel belongs to the iron alloys classification, while grade Ti-Pd17 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CH20 steel and the bottom bar is grade Ti-Pd17 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 38
22
Fatigue Strength, MPa 290
140
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 78
40
Tensile Strength: Ultimate (UTS), MPa 610
270
Tensile Strength: Yield (Proof), MPa 350
190

Thermal Properties

Latent Heat of Fusion, J/g 310
420
Maximum Temperature: Mechanical, °C 1100
320
Melting Completion (Liquidus), °C 1410
1660
Melting Onset (Solidus), °C 1430
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 14
21
Thermal Expansion, µm/m-K 15
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
7.1

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.7
36
Embodied Energy, MJ/kg 53
600
Embodied Water, L/kg 180
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
55
Resilience: Unit (Modulus of Resilience), kJ/m3 300
180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 22
17
Strength to Weight: Bending, points 21
21
Thermal Diffusivity, mm2/s 3.7
8.8
Thermal Shock Resistance, points 15
21

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.1
Chromium (Cr), % 22 to 26
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 54.7 to 66
0 to 0.2
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 12 to 15
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
98.9 to 99.96
Residuals, % 0
0 to 0.4