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S21900 Stainless Steel vs. EN 1.5805 Steel

Both S21900 stainless steel and EN 1.5805 steel are iron alloys. They have 67% of their average alloy composition in common. There are 25 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 S21900 stainless steel and the bottom bar is EN 1.5805 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
140 to 170
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 710
460 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 980
430
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
40
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
3.1
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.0
1.6
Embodied Energy, MJ/kg 43
21
Embodied Water, L/kg 160
53

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26
16 to 42
Strength to Weight: Bending, points 23
17 to 32
Thermal Diffusivity, mm2/s 3.8
11
Thermal Shock Resistance, points 15
13 to 35

Alloy Composition

Carbon (C), % 0 to 0.080
0.070 to 0.12
Chromium (Cr), % 19 to 21.5
0.9 to 1.2
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 59.4 to 67.4
95.7 to 97.2
Manganese (Mn), % 8.0 to 10
0.6 to 0.9
Nickel (Ni), % 5.5 to 7.5
1.2 to 1.5
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.3
Sulfur (S), % 0 to 0.030
0 to 0.025