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S43940 Stainless Steel vs. EN 1.8831 Steel

Both S43940 stainless steel and EN 1.8831 steel are iron alloys. They have 81% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S43940 stainless steel and the bottom bar is EN 1.8831 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 21
19
Fatigue Strength, MPa 180
330
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 310
390
Tensile Strength: Ultimate (UTS), MPa 490
630
Tensile Strength: Yield (Proof), MPa 280
480

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 890
400
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
49
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.3
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.6
Embodied Energy, MJ/kg 38
21
Embodied Water, L/kg 120
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
110
Resilience: Unit (Modulus of Resilience), kJ/m3 200
620
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
22
Strength to Weight: Bending, points 18
21
Thermal Diffusivity, mm2/s 6.8
13
Thermal Shock Resistance, points 18
18

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.040
Carbon (C), % 0 to 0.030
0 to 0.16
Chromium (Cr), % 17.5 to 18.5
0
Iron (Fe), % 78.2 to 82.1
96.6 to 99.98
Manganese (Mn), % 0 to 1.0
0 to 1.7
Molybdenum (Mo), % 0
0 to 0.2
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0.3 to 0.6
0 to 0.050
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.0050
Titanium (Ti), % 0.1 to 0.6
0 to 0.050
Vanadium (V), % 0
0 to 0.1