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ASTM A225 Steel vs. Grade 24 Titanium

ASTM A225 steel belongs to the iron alloys classification, while grade 24 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A225 steel and the bottom bar is grade 24 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 21 to 23
11
Fatigue Strength, MPa 330 to 390
550
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
40
Shear Strength, MPa 390 to 520
610
Tensile Strength: Ultimate (UTS), MPa 620 to 830
1010
Tensile Strength: Yield (Proof), MPa 460 to 550
940

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Maximum Temperature: Mechanical, °C 400
340
Melting Completion (Liquidus), °C 1460
1610
Melting Onset (Solidus), °C 1420
1560
Specific Heat Capacity, J/kg-K 470
560
Thermal Conductivity, W/m-K 52
7.1
Thermal Expansion, µm/m-K 13
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.0

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.8
43
Embodied Energy, MJ/kg 24 to 25
710
Embodied Water, L/kg 48
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 170
110
Resilience: Unit (Modulus of Resilience), kJ/m3 580 to 820
4160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 22 to 29
63
Strength to Weight: Bending, points 21 to 25
50
Thermal Diffusivity, mm2/s 14
2.9
Thermal Shock Resistance, points 18 to 24
72