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EN 1.4317 Stainless Steel vs. AISI 422 Stainless Steel

Both EN 1.4317 stainless steel and AISI 422 stainless steel are iron alloys. They have a very high 95% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4317 stainless steel and the bottom bar is AISI 422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
15 to 17
Fatigue Strength, MPa 380
410 to 500
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 860
910 to 1080
Tensile Strength: Yield (Proof), MPa 630
670 to 870

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 390
380
Maximum Temperature: Mechanical, °C 770
650
Melting Completion (Liquidus), °C 1440
1480
Melting Onset (Solidus), °C 1400
1470
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 26
24
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
5.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
11
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.4
3.1
Embodied Energy, MJ/kg 33
44
Embodied Water, L/kg 110
100

Common Calculations

PREN (Pitting Resistance) 14
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 1010
1140 to 1910
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31
32 to 38
Strength to Weight: Bending, points 26
26 to 30
Thermal Diffusivity, mm2/s 7.0
6.4
Thermal Shock Resistance, points 30
33 to 39

Alloy Composition

Carbon (C), % 0 to 0.060
0.2 to 0.25
Chromium (Cr), % 12 to 13.5
11 to 12.5
Iron (Fe), % 78.7 to 84.5
81.9 to 85.8
Manganese (Mn), % 0 to 1.0
0.5 to 1.0
Molybdenum (Mo), % 0 to 0.7
0.9 to 1.3
Nickel (Ni), % 3.5 to 5.0
0.5 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.025
Tungsten (W), % 0
0.9 to 1.3
Vanadium (V), % 0
0.2 to 0.3