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ASTM A217 Cast Steel vs. Grade 33 Titanium

ASTM A217 cast steel belongs to the iron alloys classification, while grade 33 titanium belongs to the titanium alloys. There are 30 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 A217 cast steel and the bottom bar is grade 33 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 21 to 27
23
Fatigue Strength, MPa 200 to 320
250
Poisson's Ratio 0.28 to 0.29
0.32
Reduction in Area, % 39 to 50
34
Shear Modulus, GPa 73 to 75
41
Tensile Strength: Ultimate (UTS), MPa 540 to 710
390
Tensile Strength: Yield (Proof), MPa 270 to 460
350

Thermal Properties

Latent Heat of Fusion, J/g 250 to 270
420
Maximum Temperature: Mechanical, °C 410 to 600
320
Melting Completion (Liquidus), °C 1450 to 1460
1660
Melting Onset (Solidus), °C 1410 to 1420
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 26 to 50
21
Thermal Expansion, µm/m-K 13
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3 to 9.2
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4 to 11
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4 to 7.0
55
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.5 to 2.1
33
Embodied Energy, MJ/kg 20 to 28
530
Embodied Water, L/kg 47 to 87
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
86
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 570
590
Stiffness to Weight: Axial, points 13 to 14
13
Stiffness to Weight: Bending, points 24 to 25
35
Strength to Weight: Axial, points 19 to 25
24
Strength to Weight: Bending, points 19 to 23
26
Thermal Diffusivity, mm2/s 6.9 to 14
8.7
Thermal Shock Resistance, points 16 to 20
30