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ACI-ASTM CH20 Steel vs. Grade 1 Titanium

ACI-ASTM CH20 steel belongs to the iron alloys classification, while grade 1 titanium belongs to the titanium alloys. There are 30 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 1 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
120
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 38
28
Fatigue Strength, MPa 290
170
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 78
39
Tensile Strength: Ultimate (UTS), MPa 610
310
Tensile Strength: Yield (Proof), MPa 350
220

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
20
Thermal Expansion, µm/m-K 15
8.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 20
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.7
31
Embodied Energy, MJ/kg 53
510
Embodied Water, L/kg 180
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
79
Resilience: Unit (Modulus of Resilience), kJ/m3 300
230
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 22
19
Strength to Weight: Bending, points 21
23
Thermal Diffusivity, mm2/s 3.7
8.2
Thermal Shock Resistance, points 15
24

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.080
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
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
99.095 to 100
Residuals, % 0
0 to 0.4