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ASTM A369 Grade FP91 vs. 50Cr-50Ni-Cb Alloy

ASTM A369 grade FP91 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 (11, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP91 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, % 19
5.6
Poisson's Ratio 0.28
0.26
Shear Modulus, GPa 75
84
Tensile Strength: Ultimate (UTS), MPa 670
620
Tensile Strength: Yield (Proof), MPa 460
390

Thermal Properties

Latent Heat of Fusion, J/g 270
350
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
60
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.6
9.2
Embodied Energy, MJ/kg 37
130
Embodied Water, L/kg 88
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
30
Resilience: Unit (Modulus of Resilience), kJ/m3 560
370
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
21
Strength to Weight: Bending, points 22
20
Thermal Shock Resistance, points 18
14

Alloy Composition

Aluminum (Al), % 0 to 0.020
0 to 0.25
Carbon (C), % 0.080 to 0.12
0 to 0.1
Chromium (Cr), % 8.0 to 9.5
47 to 52
Iron (Fe), % 87.3 to 90.3
0 to 1.0
Manganese (Mn), % 0.3 to 0.6
0 to 0.3
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
43.3 to 51.6
Niobium (Nb), % 0.060 to 0.1
1.4 to 1.7
Nitrogen (N), % 0.030 to 0.070
0 to 0.16
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0.2 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.020
Titanium (Ti), % 0 to 0.010
0 to 0.5
Vanadium (V), % 0.18 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0