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ASTM A369 Grade FP91 vs. AISI 316L Stainless Steel

Both ASTM A369 grade FP91 and AISI 316L stainless steel are iron alloys. They have 78% 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 AISI 316L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
170 to 350
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19
9.0 to 50
Fatigue Strength, MPa 320
170 to 450
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
78
Shear Strength, MPa 410
370 to 690
Tensile Strength: Ultimate (UTS), MPa 670
530 to 1160
Tensile Strength: Yield (Proof), MPa 460
190 to 870

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Mechanical, °C 600
870
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
19
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.6
3.9
Embodied Energy, MJ/kg 37
53
Embodied Water, L/kg 88
150

Common Calculations

PREN (Pitting Resistance) 13
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
77 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 560
93 to 1880
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
19 to 41
Strength to Weight: Bending, points 22
18 to 31
Thermal Diffusivity, mm2/s 6.9
4.1
Thermal Shock Resistance, points 18
12 to 25

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
16 to 18
Iron (Fe), % 87.3 to 90.3
62 to 72
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.85 to 1.1
2.0 to 3.0
Nickel (Ni), % 0 to 0.4
10 to 14
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0 to 0.1
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0.2 to 0.5
0 to 0.75
Sulfur (S), % 0 to 0.025
0 to 0.030
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.18 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0