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ASTM A369 Grade FP9 vs. Type 1 Niobium

ASTM A369 grade FP9 belongs to the iron alloys classification, while Type 1 niobium 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 FP9 and the bottom bar is Type 1 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
79
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 20
29
Poisson's Ratio 0.28
0.4
Shear Modulus, GPa 75
38
Tensile Strength: Ultimate (UTS), MPa 470
140
Tensile Strength: Yield (Proof), MPa 240
82

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Specific Heat Capacity, J/kg-K 480
270
Thermal Conductivity, W/m-K 26
52
Thermal Expansion, µm/m-K 13
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.6
Embodied Water, L/kg 87
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
35
Resilience: Unit (Modulus of Resilience), kJ/m3 140
32
Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 17
4.6
Strength to Weight: Bending, points 17
7.1
Thermal Diffusivity, mm2/s 6.9
23
Thermal Shock Resistance, points 13
13

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.010
Chromium (Cr), % 8.0 to 10
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 87.1 to 90.3
0 to 0.0050
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.1
0 to 0.010
Nickel (Ni), % 0
0 to 0.0050
Niobium (Nb), % 0
99.7 to 100
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.5 to 1.0
0 to 0.0050
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 0
0 to 0.030
Zirconium (Zr), % 0
0 to 0.020