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AISI 420F Stainless Steel vs. EN 1.8550 Steel

Both AISI 420F stainless steel and EN 1.8550 steel are iron alloys. They have 88% 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 AISI 420F stainless steel and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
300
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
11
Fatigue Strength, MPa 270
470
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 460
600
Tensile Strength: Ultimate (UTS), MPa 740
1000
Tensile Strength: Yield (Proof), MPa 430
760

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 760
440
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
40
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
3.4
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.7
Embodied Energy, MJ/kg 28
23
Embodied Water, L/kg 100
67

Common Calculations

PREN (Pitting Resistance) 14
2.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
100
Resilience: Unit (Modulus of Resilience), kJ/m3 480
1550
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
36
Strength to Weight: Bending, points 23
29
Thermal Diffusivity, mm2/s 6.8
11
Thermal Shock Resistance, points 27
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0.3 to 0.4
0.3 to 0.37
Chromium (Cr), % 12 to 14
1.5 to 1.8
Iron (Fe), % 82.4 to 87.6
94.4 to 96.3
Manganese (Mn), % 0 to 1.3
0.4 to 0.7
Molybdenum (Mo), % 0 to 0.5
0.15 to 0.25
Nickel (Ni), % 0
0.85 to 1.2
Phosphorus (P), % 0 to 0.060
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0.15 to 0.35
0 to 0.035