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EN 1.4024 Stainless Steel vs. EN 1.8821 Steel

Both EN 1.4024 stainless steel and EN 1.8821 steel are iron alloys. They have 87% of their average alloy composition in common. There are 30 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 EN 1.4024 stainless steel and the bottom bar is EN 1.8821 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 15 to 22
25
Fatigue Strength, MPa 220 to 300
280
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 370 to 460
340
Tensile Strength: Ultimate (UTS), MPa 590 to 750
530
Tensile Strength: Yield (Proof), MPa 330 to 510
390

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 760
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 30
49
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
2.3
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 1.9
1.6
Embodied Energy, MJ/kg 27
21
Embodied Water, L/kg 100
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 660
400
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 27
19
Strength to Weight: Bending, points 20 to 24
19
Thermal Diffusivity, mm2/s 8.1
13
Thermal Shock Resistance, points 21 to 26
16

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.030
Carbon (C), % 0.12 to 0.17
0 to 0.14
Chromium (Cr), % 12 to 14
0
Iron (Fe), % 83.8 to 87.9
96.8 to 99.98
Manganese (Mn), % 0 to 1.0
0 to 1.6
Molybdenum (Mo), % 0
0 to 0.2
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.1