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R30556 Alloy vs. 712.0 Aluminum

R30556 alloy belongs to the iron alloys classification, while 712.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is R30556 alloy and the bottom bar is 712.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
70
Elongation at Break, % 45
4.5 to 4.7
Fatigue Strength, MPa 320
140 to 180
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 81
27
Shear Strength, MPa 550
180
Tensile Strength: Ultimate (UTS), MPa 780
250 to 260
Tensile Strength: Yield (Proof), MPa 350
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 300
380
Maximum Temperature: Mechanical, °C 1100
190
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1330
610
Specific Heat Capacity, J/kg-K 450
870
Thermal Conductivity, W/m-K 11
160
Thermal Expansion, µm/m-K 15
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
40
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
120

Otherwise Unclassified Properties

Base Metal Price, % relative 70
9.5
Density, g/cm3 8.4
3.0
Embodied Carbon, kg CO2/kg material 8.7
8.0
Embodied Energy, MJ/kg 130
150
Embodied Water, L/kg 300
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
11
Resilience: Unit (Modulus of Resilience), kJ/m3 290
240 to 270
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
46
Strength to Weight: Axial, points 26
24 to 25
Strength to Weight: Bending, points 22
30 to 31
Thermal Diffusivity, mm2/s 2.9
62
Thermal Shock Resistance, points 18
11

Alloy Composition

Aluminum (Al), % 0.1 to 0.5
90.7 to 94
Boron (B), % 0 to 0.020
0
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 21 to 23
0.4 to 0.6
Cobalt (Co), % 16 to 21
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 20.4 to 38.2
0 to 0.5
Lanthanum (La), % 0.0050 to 0.1
0
Magnesium (Mg), % 0
0.5 to 0.65
Manganese (Mn), % 0.5 to 2.0
0 to 0.1
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
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.2 to 0.8
0 to 0.3
Sulfur (S), % 0 to 0.015
0
Tantalum (Ta), % 0.3 to 1.3
0
Titanium (Ti), % 0
0.15 to 0.25
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
5.0 to 6.5
Residuals, % 0
0 to 0.2