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EN 1.4020 Stainless Steel vs. SAE-AISI S4 Steel

Both EN 1.4020 stainless steel and SAE-AISI S4 steel are iron alloys. They have 69% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is EN 1.4020 stainless steel and the bottom bar is SAE-AISI S4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Tensile Strength: Ultimate (UTS), MPa 770 to 1130
670 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1390
1430
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.2
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.5
2.0
Embodied Energy, MJ/kg 37
29
Embodied Water, L/kg 150
48

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 41
24 to 77
Strength to Weight: Bending, points 25 to 32
22 to 48
Thermal Shock Resistance, points 16 to 23
20 to 65

Alloy Composition

Carbon (C), % 0 to 0.15
0.5 to 0.65
Chromium (Cr), % 16.5 to 19
0.1 to 0.5
Iron (Fe), % 62.8 to 71.8
95.2 to 96.9
Manganese (Mn), % 11 to 14
0.6 to 1.0
Nickel (Ni), % 0.5 to 2.5
0
Nitrogen (N), % 0.2 to 0.45
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
1.8 to 2.3
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.15 to 0.35