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R30556 Alloy vs. Grade 9 Titanium

R30556 alloy belongs to the iron alloys classification, while grade 9 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 R30556 alloy and the bottom bar is grade 9 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 45
11 to 17
Fatigue Strength, MPa 320
330 to 480
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 81
40
Shear Strength, MPa 550
430 to 580
Tensile Strength: Ultimate (UTS), MPa 780
700 to 960
Tensile Strength: Yield (Proof), MPa 350
540 to 830

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1100
330
Melting Completion (Liquidus), °C 1420
1640
Melting Onset (Solidus), °C 1330
1590
Specific Heat Capacity, J/kg-K 450
550
Thermal Conductivity, W/m-K 11
8.1
Thermal Expansion, µm/m-K 15
9.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 70
37
Density, g/cm3 8.4
4.5
Embodied Carbon, kg CO2/kg material 8.7
36
Embodied Energy, MJ/kg 130
580
Embodied Water, L/kg 300
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 290
1380 to 3220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 26
43 to 60
Strength to Weight: Bending, points 22
39 to 48
Thermal Diffusivity, mm2/s 2.9
3.3
Thermal Shock Resistance, points 18
52 to 71

Alloy Composition

Aluminum (Al), % 0.1 to 0.5
2.5 to 3.5
Boron (B), % 0 to 0.020
0
Carbon (C), % 0.050 to 0.15
0 to 0.080
Chromium (Cr), % 21 to 23
0
Cobalt (Co), % 16 to 21
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 20.4 to 38.2
0 to 0.25
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
0
Molybdenum (Mo), % 2.5 to 4.0
0
Nickel (Ni), % 19 to 22.5
0
Niobium (Nb), % 0 to 0.3
0
Nitrogen (N), % 0.1 to 0.3
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.2 to 0.8
0
Sulfur (S), % 0 to 0.015
0
Tantalum (Ta), % 0.3 to 1.3
0
Titanium (Ti), % 0
92.6 to 95.5
Tungsten (W), % 2.0 to 3.5
0
Vanadium (V), % 0
2.0 to 3.0
Zinc (Zn), % 0.0010 to 0.1
0
Residuals, % 0
0 to 0.4