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ACI-ASTM CC50 Steel vs. R05255 Alloy

ACI-ASTM CC50 steel belongs to the iron alloys classification, while R05255 alloy belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (15, 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 ACI-ASTM CC50 steel and the bottom bar is R05255 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.27
0.34
Shear Modulus, GPa 80
70
Tensile Strength: Ultimate (UTS), MPa 430
540

Thermal Properties

Latent Heat of Fusion, J/g 300
140
Specific Heat Capacity, J/kg-K 490
140
Thermal Conductivity, W/m-K 17
59
Thermal Expansion, µm/m-K 11
6.6

Otherwise Unclassified Properties

Density, g/cm3 7.6
17
Embodied Water, L/kg 170
630

Common Calculations

Stiffness to Weight: Axial, points 15
6.3
Stiffness to Weight: Bending, points 26
11
Strength to Weight: Axial, points 16
9.1
Strength to Weight: Bending, points 17
8.9
Thermal Diffusivity, mm2/s 4.5
25
Thermal Shock Resistance, points 14
31

Alloy Composition

Carbon (C), % 0 to 0.5
0 to 0.010
Chromium (Cr), % 26 to 30
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 62.9 to 74
0 to 0.010
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0 to 4.0
0 to 0.010
Niobium (Nb), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.0050
Sulfur (S), % 0 to 0.040
0
Tantalum (Ta), % 0
95.9 to 98
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
2.0 to 3.5