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ASTM A369 Grade FP91 vs. AWS BNi-10

ASTM A369 grade FP91 belongs to the iron alloys classification, while AWS BNi-10 belongs to the nickel alloys. There are 19 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 ASTM A369 grade FP91 and the bottom bar is AWS BNi-10.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
76
Tensile Strength: Ultimate (UTS), MPa 670
600

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Melting Completion (Liquidus), °C 1460
1110
Melting Onset (Solidus), °C 1420
970
Specific Heat Capacity, J/kg-K 470
440
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
80
Density, g/cm3 7.8
9.4
Embodied Carbon, kg CO2/kg material 2.6
11
Embodied Energy, MJ/kg 37
160
Embodied Water, L/kg 88
230

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 22
17
Thermal Shock Resistance, points 18
19

Alloy Composition

Aluminum (Al), % 0 to 0.020
0 to 0.050
Boron (B), % 0
2.0 to 3.0
Carbon (C), % 0.080 to 0.12
0.4 to 0.55
Chromium (Cr), % 8.0 to 9.5
10 to 13
Cobalt (Co), % 0
0 to 0.1
Iron (Fe), % 87.3 to 90.3
2.5 to 4.5
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
57.2 to 67.1
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0.2 to 0.5
3.0 to 4.0
Sulfur (S), % 0 to 0.025
0 to 0.020
Titanium (Ti), % 0 to 0.010
0 to 0.050
Tungsten (W), % 0
15 to 17
Vanadium (V), % 0.18 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0 to 0.050
Residuals, % 0
0 to 0.5