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EN 1.6553 Steel vs. S21900 Stainless Steel

Both EN 1.6553 steel and S21900 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.6553 steel and the bottom bar is S21900 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 240
220
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19 to 21
50
Fatigue Strength, MPa 330 to 460
380
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 710 to 800
710
Tensile Strength: Yield (Proof), MPa 470 to 670
390

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 420
980
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
14
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.7
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.6
3.0
Embodied Energy, MJ/kg 21
43
Embodied Water, L/kg 51
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 150
300
Resilience: Unit (Modulus of Resilience), kJ/m3 600 to 1190
380
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25 to 28
26
Strength to Weight: Bending, points 23 to 24
23
Thermal Diffusivity, mm2/s 10
3.8
Thermal Shock Resistance, points 21 to 23
15

Alloy Composition

Carbon (C), % 0.23 to 0.28
0 to 0.080
Chromium (Cr), % 0.4 to 0.8
19 to 21.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 95.6 to 98.2
59.4 to 67.4
Manganese (Mn), % 0.6 to 1.0
8.0 to 10
Molybdenum (Mo), % 0.15 to 0.3
0
Nickel (Ni), % 0.4 to 0.8
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030
Vanadium (V), % 0 to 0.030
0