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R60706 Alloy vs. ACI-ASTM CK20 Steel

R60706 alloy belongs to the otherwise unclassified metals classification, while ACI-ASTM CK20 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is R60706 alloy and the bottom bar is ACI-ASTM CK20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 16
37
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 37
78
Tensile Strength: Ultimate (UTS), MPa 580
530
Tensile Strength: Yield (Proof), MPa 390
260

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 17
14
Thermal Expansion, µm/m-K 6.3
15

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 450
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 82
160
Resilience: Unit (Modulus of Resilience), kJ/m3 760
170
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 24
19
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 9.5
3.7
Thermal Shock Resistance, points 67
13

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.2
Chromium (Cr), % 0 to 0.2
23 to 27
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.2
46.7 to 58
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
19 to 22
Niobium (Nb), % 2.0 to 3.0
0
Nitrogen (N), % 0 to 0.025
0
Oxygen (O), % 0 to 0.16
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Zirconium (Zr), % 91 to 98
0