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SAE-AISI 4047 Steel vs. 50Cr-50Ni-Cb Alloy

SAE-AISI 4047 steel belongs to the iron alloys classification, while 50Cr-50Ni-Cb alloy belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4047 steel and the bottom bar is 50Cr-50Ni-Cb alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 23
5.6
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 73
84
Tensile Strength: Ultimate (UTS), MPa 580
620
Tensile Strength: Yield (Proof), MPa 310
390

Thermal Properties

Latent Heat of Fusion, J/g 250
350
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
60
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.5
9.2
Embodied Energy, MJ/kg 19
130
Embodied Water, L/kg 47
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
30
Resilience: Unit (Modulus of Resilience), kJ/m3 260
370
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
21
Strength to Weight: Bending, points 20
20
Thermal Shock Resistance, points 18
14

Alloy Composition

Aluminum (Al), % 0
0 to 0.25
Carbon (C), % 0.45 to 0.5
0 to 0.1
Chromium (Cr), % 0
47 to 52
Iron (Fe), % 97.9 to 98.5
0 to 1.0
Manganese (Mn), % 0.7 to 0.9
0 to 0.3
Molybdenum (Mo), % 0.2 to 0.3
0
Nickel (Ni), % 0
43.3 to 51.6
Niobium (Nb), % 0
1.4 to 1.7
Nitrogen (N), % 0
0 to 0.16
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.020
Titanium (Ti), % 0
0 to 0.5