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ASTM A27 Cast Steel vs. Grade Ti-Pd17 Titanium

ASTM A27 cast steel belongs to the iron alloys classification, while grade Ti-Pd17 titanium belongs to the titanium alloys. There are 28 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 ASTM A27 cast steel and the bottom bar is grade Ti-Pd17 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 25 to 27
22
Fatigue Strength, MPa 170 to 230
140
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 460 to 550
270
Tensile Strength: Yield (Proof), MPa 230 to 310
190

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 400
320
Melting Completion (Liquidus), °C 1460
1660
Melting Onset (Solidus), °C 1420
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 52
21
Thermal Expansion, µm/m-K 12
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0 to 7.1
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
7.1

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.4
36
Embodied Energy, MJ/kg 18
600
Embodied Water, L/kg 45 to 46
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 96 to 120
55
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 260
180
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 16 to 20
17
Strength to Weight: Bending, points 17 to 19
21
Thermal Diffusivity, mm2/s 14
8.8
Thermal Shock Resistance, points 15 to 18
21