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ASTM A369 Grade FP91 vs. N08926 Stainless Steel

Both ASTM A369 grade FP91 and N08926 stainless steel are iron alloys. They have 57% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP91 and the bottom bar is N08926 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19
40
Fatigue Strength, MPa 320
290
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
80
Shear Strength, MPa 410
500
Tensile Strength: Ultimate (UTS), MPa 670
740
Tensile Strength: Yield (Proof), MPa 460
330

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 600
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 26
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 10
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
33
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 2.6
6.2
Embodied Energy, MJ/kg 37
84
Embodied Water, L/kg 88
200

Common Calculations

PREN (Pitting Resistance) 13
45
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
240
Resilience: Unit (Modulus of Resilience), kJ/m3 560
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
25
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 6.9
3.2
Thermal Shock Resistance, points 18
16

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Carbon (C), % 0.080 to 0.12
0 to 0.020
Chromium (Cr), % 8.0 to 9.5
19 to 21
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 87.3 to 90.3
41.7 to 50.4
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.85 to 1.1
6.0 to 7.0
Nickel (Ni), % 0 to 0.4
24 to 26
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0.15 to 0.25
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0.2 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.010
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.18 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0