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ASTM A369 Grade FP91 vs. AWS ERNiCrFe-5

ASTM A369 grade FP91 belongs to the iron alloys classification, while AWS ERNiCrFe-5 belongs to the nickel alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 ERNiCrFe-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
34
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 75
74
Tensile Strength: Ultimate (UTS), MPa 670
630

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1460
1390
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 26
14
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 10
1.7

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
65
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 2.6
11
Embodied Energy, MJ/kg 37
150
Embodied Water, L/kg 88
250

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 24
20
Strength to Weight: Bending, points 22
19
Thermal Diffusivity, mm2/s 6.9
3.6
Thermal Shock Resistance, points 18
19

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Carbon (C), % 0.080 to 0.12
0 to 0.080
Chromium (Cr), % 8.0 to 9.5
14 to 17
Cobalt (Co), % 0
0 to 0.12
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 87.3 to 90.3
6.0 to 10
Manganese (Mn), % 0.3 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
70 to 78.5
Niobium (Nb), % 0.060 to 0.1
1.5 to 3.0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0.2 to 0.5
0 to 0.35
Sulfur (S), % 0 to 0.025
0 to 0.015
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.18 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0
Residuals, % 0
0 to 0.5