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ASTM A369 Grade FP91 vs. S34565 Stainless Steel

Both ASTM A369 grade FP91 and S34565 stainless steel are iron alloys. They have 58% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP91 and the bottom bar is S34565 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
200
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 19
39
Fatigue Strength, MPa 320
400
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
80
Shear Strength, MPa 410
610
Tensile Strength: Ultimate (UTS), MPa 670
900
Tensile Strength: Yield (Proof), MPa 460
470

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Maximum Temperature: Mechanical, °C 600
1100
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
12
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
28
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.6
5.3
Embodied Energy, MJ/kg 37
73
Embodied Water, L/kg 88
210

Common Calculations

PREN (Pitting Resistance) 13
47
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
300
Resilience: Unit (Modulus of Resilience), kJ/m3 560
540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
32
Strength to Weight: Bending, points 22
26
Thermal Diffusivity, mm2/s 6.9
3.2
Thermal Shock Resistance, points 18
22

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Carbon (C), % 0.080 to 0.12
0 to 0.030
Chromium (Cr), % 8.0 to 9.5
23 to 25
Iron (Fe), % 87.3 to 90.3
43.2 to 51.6
Manganese (Mn), % 0.3 to 0.6
5.0 to 7.0
Molybdenum (Mo), % 0.85 to 1.1
4.0 to 5.0
Nickel (Ni), % 0 to 0.4
16 to 18
Niobium (Nb), % 0.060 to 0.1
0 to 0.1
Nitrogen (N), % 0.030 to 0.070
0.4 to 0.6
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0.2 to 0.5
0 to 1.0
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