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Grade Ti-Pd18 Titanium vs. ASTM Grade HP Steel

Grade Ti-Pd18 titanium belongs to the titanium alloys classification, while ASTM grade HP steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is grade Ti-Pd18 titanium and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 320
140
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 17
5.1
Fatigue Strength, MPa 350
130
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
78
Tensile Strength: Ultimate (UTS), MPa 710
490
Tensile Strength: Yield (Proof), MPa 540
260

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Maximum Temperature: Mechanical, °C 330
1100
Melting Completion (Liquidus), °C 1640
1370
Melting Onset (Solidus), °C 1590
1330
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 8.2
12
Thermal Expansion, µm/m-K 9.1
16

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 41
5.8
Embodied Energy, MJ/kg 670
82
Embodied Water, L/kg 270
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
21
Resilience: Unit (Modulus of Resilience), kJ/m3 1380
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 44
17
Strength to Weight: Bending, points 39
17
Thermal Diffusivity, mm2/s 3.3
3.2
Thermal Shock Resistance, points 52
11

Alloy Composition

Aluminum (Al), % 2.5 to 3.5
0
Carbon (C), % 0 to 0.1
0.35 to 0.75
Chromium (Cr), % 0
24 to 28
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.25
29.2 to 42.7
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.050
33 to 37
Oxygen (O), % 0 to 0.15
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 2.5
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 92.5 to 95.5
0
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0