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EN 1.6579 Steel vs. AISI 420F Stainless Steel

Both EN 1.6579 steel and AISI 420F stainless steel are iron alloys. They have 88% 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 1.6579 steel and the bottom bar is AISI 420F stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260 to 290
230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 14
18
Fatigue Strength, MPa 380 to 570
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 850 to 980
740
Tensile Strength: Yield (Proof), MPa 600 to 910
430

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 440
760
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.7
2.0
Embodied Energy, MJ/kg 22
28
Embodied Water, L/kg 56
100

Common Calculations

PREN (Pitting Resistance) 2.4
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 120
120
Resilience: Unit (Modulus of Resilience), kJ/m3 950 to 2210
480
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 30 to 35
27
Strength to Weight: Bending, points 25 to 28
23
Thermal Diffusivity, mm2/s 11
6.8
Thermal Shock Resistance, points 25 to 29
27

Alloy Composition

Carbon (C), % 0.32 to 0.38
0.3 to 0.4
Chromium (Cr), % 1.4 to 1.7
12 to 14
Iron (Fe), % 94.2 to 96.1
82.4 to 87.6
Manganese (Mn), % 0.6 to 1.0
0 to 1.3
Molybdenum (Mo), % 0.15 to 0.35
0 to 0.5
Nickel (Ni), % 1.4 to 1.7
0
Phosphorus (P), % 0 to 0.025
0 to 0.060
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0.15 to 0.35