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ASTM A372 Grade K Steel vs. Grade Ti-Pd8A Titanium

ASTM A372 grade K steel belongs to the iron alloys classification, while grade Ti-Pd8A titanium belongs to the titanium alloys. There are 29 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 A372 grade K steel and the bottom bar is grade Ti-Pd8A titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
200
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 23
13
Fatigue Strength, MPa 440
260
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 780
500
Tensile Strength: Yield (Proof), MPa 620
430

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 440
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 48
21
Thermal Expansion, µm/m-K 13
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
3.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
6.9

Otherwise Unclassified Properties

Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 1.8
49
Embodied Energy, MJ/kg 24
840
Embodied Water, L/kg 57
520

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
65
Resilience: Unit (Modulus of Resilience), kJ/m3 1010
880
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 27
31
Strength to Weight: Bending, points 24
31
Thermal Diffusivity, mm2/s 13
8.6
Thermal Shock Resistance, points 23
39

Alloy Composition

Carbon (C), % 0 to 0.18
0 to 0.1
Chromium (Cr), % 1.0 to 1.8
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 93.4 to 96.6
0 to 0.25
Manganese (Mn), % 0.1 to 0.4
0
Molybdenum (Mo), % 0.2 to 0.6
0
Nickel (Ni), % 2.0 to 3.3
0 to 0.050
Oxygen (O), % 0
0 to 0.4
Palladium (Pd), % 0
0.12 to 0.3
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
98.8 to 99.9
Residuals, % 0
0 to 0.4