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S32808 Stainless Steel vs. EN 1.7221 Steel

Both S32808 stainless steel and EN 1.7221 steel are iron alloys. They have 63% 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 S32808 stainless steel and the bottom bar is EN 1.7221 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
200 to 230
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 17
11 to 17
Fatigue Strength, MPa 350
290 to 390
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Tensile Strength: Ultimate (UTS), MPa 780
650 to 780
Tensile Strength: Yield (Proof), MPa 570
430 to 630

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
420
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
44
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 24
2.4
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.0
1.5
Embodied Energy, MJ/kg 57
20
Embodied Water, L/kg 180
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
83 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 790
490 to 1050
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
23 to 27
Strength to Weight: Bending, points 24
21 to 24
Thermal Diffusivity, mm2/s 3.8
12
Thermal Shock Resistance, points 21
19 to 23

Alloy Composition

Carbon (C), % 0 to 0.030
0.22 to 0.29
Chromium (Cr), % 27 to 27.9
0.8 to 1.2
Iron (Fe), % 58.1 to 62.8
96.8 to 98.3
Manganese (Mn), % 0 to 1.1
0.5 to 0.8
Molybdenum (Mo), % 0.8 to 1.2
0.15 to 0.3
Nickel (Ni), % 7.0 to 8.2
0
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.6
Sulfur (S), % 0 to 0.010
0 to 0.030
Tungsten (W), % 2.1 to 2.5
0