MakeItFrom.com
Menu (ESC)

AISI 422 Stainless Steel vs. ASTM A369 Grade FP91

Both AISI 422 stainless steel and ASTM A369 grade FP91 are iron alloys. They have a moderately high 95% 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 AISI 422 stainless steel and the bottom bar is ASTM A369 grade FP91.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260 to 330
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 15 to 17
19
Fatigue Strength, MPa 410 to 500
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Shear Strength, MPa 560 to 660
410
Tensile Strength: Ultimate (UTS), MPa 910 to 1080
670
Tensile Strength: Yield (Proof), MPa 670 to 870
460

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Mechanical, °C 650
600
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1470
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 24
26
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.7
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 5.3
10

Otherwise Unclassified Properties

Base Metal Price, % relative 11
7.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.1
2.6
Embodied Energy, MJ/kg 44
37
Embodied Water, L/kg 100
88

Common Calculations

PREN (Pitting Resistance) 17
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1140 to 1910
560
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 38
24
Strength to Weight: Bending, points 26 to 30
22
Thermal Diffusivity, mm2/s 6.4
6.9
Thermal Shock Resistance, points 33 to 39
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Carbon (C), % 0.2 to 0.25
0.080 to 0.12
Chromium (Cr), % 11 to 12.5
8.0 to 9.5
Iron (Fe), % 81.9 to 85.8
87.3 to 90.3
Manganese (Mn), % 0.5 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 0.9 to 1.3
0.85 to 1.1
Nickel (Ni), % 0.5 to 1.0
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.5
0.2 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.025
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0.9 to 1.3
0
Vanadium (V), % 0.2 to 0.3
0.18 to 0.25
Zirconium (Zr), % 0
0 to 0.010