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EN 1.4418 Stainless Steel vs. AISI 420F Stainless Steel

Both EN 1.4418 stainless steel and AISI 420F stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4418 stainless steel and the bottom bar is AISI 420F stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 16 to 20
18
Fatigue Strength, MPa 350 to 480
270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 530 to 620
460
Tensile Strength: Ultimate (UTS), MPa 860 to 1000
740
Tensile Strength: Yield (Proof), MPa 540 to 790
430

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 870
760
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.8
2.0
Embodied Energy, MJ/kg 39
28
Embodied Water, L/kg 130
100

Common Calculations

PREN (Pitting Resistance) 20
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
120
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1590
480
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 36
27
Strength to Weight: Bending, points 26 to 28
23
Thermal Diffusivity, mm2/s 4.0
6.8
Thermal Shock Resistance, points 31 to 36
27

Alloy Composition

Carbon (C), % 0 to 0.060
0.3 to 0.4
Chromium (Cr), % 15 to 17
12 to 14
Iron (Fe), % 73.2 to 80.2
82.4 to 87.6
Manganese (Mn), % 0 to 1.5
0 to 1.3
Molybdenum (Mo), % 0.8 to 1.5
0 to 0.5
Nickel (Ni), % 4.0 to 6.0
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.015
0.15 to 0.35