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R05240 Alloy vs. ACI-ASTM CN7M Steel

R05240 alloy belongs to the otherwise unclassified metals classification, while ACI-ASTM CN7M steel belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is R05240 alloy and the bottom bar is ACI-ASTM CN7M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
200
Elongation at Break, % 25
44
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 57
77
Tensile Strength: Ultimate (UTS), MPa 270
480
Tensile Strength: Yield (Proof), MPa 170
200

Thermal Properties

Latent Heat of Fusion, J/g 210
310
Specific Heat Capacity, J/kg-K 190
470
Thermal Expansion, µm/m-K 6.8
15

Otherwise Unclassified Properties

Density, g/cm3 14
8.1
Embodied Water, L/kg 460
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
170
Resilience: Unit (Modulus of Resilience), kJ/m3 90
110
Stiffness to Weight: Axial, points 6.3
14
Stiffness to Weight: Bending, points 13
24
Strength to Weight: Axial, points 5.4
17
Strength to Weight: Bending, points 6.8
17
Thermal Shock Resistance, points 18
12

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.070
Chromium (Cr), % 0
19 to 22
Copper (Cu), % 0
3.0 to 4.0
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
37.4 to 48.5
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0 to 0.020
2.0 to 3.0
Nickel (Ni), % 0 to 0.010
27.5 to 30.5
Niobium (Nb), % 35 to 42
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.020
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.0050
0 to 1.5
Sulfur (S), % 0
0 to 0.040
Tantalum (Ta), % 57.9 to 65
0
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0 to 0.050
0