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50Cr-50Ni-Cb Alloy vs. ASTM A227 Spring Steel

50Cr-50Ni-Cb alloy belongs to the otherwise unclassified metals classification, while ASTM A227 spring steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is 50Cr-50Ni-Cb alloy and the bottom bar is ASTM A227 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 5.6
12
Poisson's Ratio 0.26
0.29
Shear Modulus, GPa 84
72
Tensile Strength: Ultimate (UTS), MPa 620
1720 to 2220
Tensile Strength: Yield (Proof), MPa 390
1430 to 1850

Thermal Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 60
1.8
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 9.2
1.4
Embodied Energy, MJ/kg 130
19
Embodied Water, L/kg 350
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30
200 to 260
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
61 to 79
Strength to Weight: Bending, points 20
41 to 48
Thermal Shock Resistance, points 14
55 to 71

Alloy Composition

Aluminum (Al), % 0 to 0.25
0
Carbon (C), % 0 to 0.1
0.45 to 0.85
Chromium (Cr), % 47 to 52
0
Iron (Fe), % 0 to 1.0
97.4 to 99.1
Manganese (Mn), % 0 to 0.3
0.3 to 1.3
Nickel (Ni), % 43.3 to 51.6
0
Niobium (Nb), % 1.4 to 1.7
0
Nitrogen (N), % 0 to 0.16
0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.5
0.15 to 0.35
Sulfur (S), % 0 to 0.020
0 to 0.050
Titanium (Ti), % 0 to 0.5
0