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EN 1.4434 Stainless Steel vs. EN 1.8831 Steel

Both EN 1.4434 stainless steel and EN 1.8831 steel are iron alloys. They have 66% 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 EN 1.4434 stainless steel and the bottom bar is EN 1.8831 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 41
19
Fatigue Strength, MPa 270
330
Impact Strength: V-Notched Charpy, J 90
110
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Shear Strength, MPa 450
390
Tensile Strength: Ultimate (UTS), MPa 660
630
Tensile Strength: Yield (Proof), MPa 310
480

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 980
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
49
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 21
2.3
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.2
1.6
Embodied Energy, MJ/kg 57
21
Embodied Water, L/kg 160
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
110
Resilience: Unit (Modulus of Resilience), kJ/m3 240
620
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 23
22
Strength to Weight: Bending, points 21
21
Thermal Diffusivity, mm2/s 4.0
13
Thermal Shock Resistance, points 15
18

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.040
Carbon (C), % 0 to 0.030
0 to 0.16
Chromium (Cr), % 16.5 to 19.5
0
Iron (Fe), % 59.2 to 69.9
96.6 to 99.98
Manganese (Mn), % 0 to 2.0
0 to 1.7
Molybdenum (Mo), % 3.0 to 4.0
0 to 0.2
Nickel (Ni), % 10.5 to 14
0 to 0.5
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0.1 to 0.2
0 to 0.020
Phosphorus (P), % 0 to 0.045
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
0 to 0.050
Vanadium (V), % 0
0 to 0.1