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ASTM A148 Cast Steel vs. Grade 4 Titanium

ASTM A148 cast steel belongs to the iron alloys classification, while grade 4 titanium belongs to the titanium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A148 cast steel and the bottom bar is grade 4 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 390
200
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 5.7 to 25
17
Fatigue Strength, MPa 280 to 670
340
Poisson's Ratio 0.29
0.32
Reduction in Area, % 13 to 45
28
Shear Modulus, GPa 73
41
Tensile Strength: Ultimate (UTS), MPa 630 to 1300
640
Tensile Strength: Yield (Proof), MPa 390 to 1160
530

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 400 to 430
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 37 to 47
19
Thermal Expansion, µm/m-K 13
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3 to 7.5
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3 to 8.6
6.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3 to 3.3
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.5 to 1.7
31
Embodied Energy, MJ/kg 20 to 22
500
Embodied Water, L/kg 48 to 53
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 150
100
Resilience: Unit (Modulus of Resilience), kJ/m3 400 to 3570
1330
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 22 to 46
40
Strength to Weight: Bending, points 21 to 34
37
Thermal Diffusivity, mm2/s 9.9 to 13
7.6
Thermal Shock Resistance, points 18 to 38
46