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EN 1.7243 Steel vs. AISI 420F Stainless Steel

Both EN 1.7243 steel and AISI 420F stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.7243 steel and the bottom bar is AISI 420F stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 170
230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 480 to 1390
740

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
760
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 44
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.5
2.0
Embodied Energy, MJ/kg 20
28
Embodied Water, L/kg 51
100

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17 to 49
27
Strength to Weight: Bending, points 17 to 35
23
Thermal Diffusivity, mm2/s 12
6.8
Thermal Shock Resistance, points 14 to 41
27

Alloy Composition

Carbon (C), % 0.15 to 0.21
0.3 to 0.4
Chromium (Cr), % 0.9 to 1.2
12 to 14
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 96.8 to 98.2
82.4 to 87.6
Manganese (Mn), % 0.6 to 0.9
0 to 1.3
Molybdenum (Mo), % 0.15 to 0.25
0 to 0.5
Phosphorus (P), % 0 to 0.035
0 to 0.060
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0.15 to 0.35