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EN 1.8151 Steel vs. EN 1.4021 Stainless Steel

Both EN 1.8151 steel and EN 1.4021 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.8151 steel and the bottom bar is EN 1.4021 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Tensile Strength: Ultimate (UTS), MPa 670 to 1940
630 to 880

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Maximum Temperature: Mechanical, °C 410
760
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 50
30
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
7.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 1.8
1.9
Embodied Energy, MJ/kg 25
27
Embodied Water, L/kg 49
100

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 70
23 to 31
Strength to Weight: Bending, points 22 to 45
21 to 26
Thermal Diffusivity, mm2/s 14
8.1
Thermal Shock Resistance, points 20 to 58
22 to 31

Alloy Composition

Carbon (C), % 0.4 to 0.5
0.16 to 0.25
Chromium (Cr), % 0.4 to 0.8
12 to 14
Iron (Fe), % 95.9 to 97.2
83.2 to 87.8
Manganese (Mn), % 0.6 to 0.9
0 to 1.5
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 1.3 to 1.7
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.015
Vanadium (V), % 0.1 to 0.2
0

Comparable Variants