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EN 1.4317 Stainless Steel vs. AISI 420F Stainless Steel

Both EN 1.4317 stainless steel and AISI 420F stainless steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 31 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 EN 1.4317 stainless steel and the bottom bar is AISI 420F stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
18
Fatigue Strength, MPa 380
270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 860
740
Tensile Strength: Yield (Proof), MPa 630
430

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 390
390
Maximum Temperature: Mechanical, °C 770
760
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 26
25
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.4
2.0
Embodied Energy, MJ/kg 33
28
Embodied Water, L/kg 110
100

Common Calculations

PREN (Pitting Resistance) 14
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1010
480
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31
27
Strength to Weight: Bending, points 26
23
Thermal Diffusivity, mm2/s 7.0
6.8
Thermal Shock Resistance, points 30
27

Alloy Composition

Carbon (C), % 0 to 0.060
0.3 to 0.4
Chromium (Cr), % 12 to 13.5
12 to 14
Iron (Fe), % 78.7 to 84.5
82.4 to 87.6
Manganese (Mn), % 0 to 1.0
0 to 1.3
Molybdenum (Mo), % 0 to 0.7
0 to 0.5
Nickel (Ni), % 3.5 to 5.0
0
Phosphorus (P), % 0 to 0.035
0 to 0.060
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.025
0.15 to 0.35