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S21904 Stainless Steel vs. EN 1.5508 Steel

Both S21904 stainless steel and EN 1.5508 steel are iron alloys. They have 65% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is EN 1.5508 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
130 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17 to 51
11 to 20
Fatigue Strength, MPa 380 to 550
210 to 320
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 510 to 620
300 to 360
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
420 to 1460
Tensile Strength: Yield (Proof), MPa 390 to 910
310 to 490

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 980
400
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
51
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 15
1.9
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.0
1.4
Embodied Energy, MJ/kg 43
19
Embodied Water, L/kg 160
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
44 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
260 to 640
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 36
15 to 52
Strength to Weight: Bending, points 23 to 29
16 to 36
Thermal Diffusivity, mm2/s 3.8
14
Thermal Shock Resistance, points 15 to 21
12 to 43

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0 to 0.040
0.2 to 0.25
Chromium (Cr), % 19 to 21.5
0 to 0.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 59.5 to 67.4
97.9 to 99.199
Manganese (Mn), % 8.0 to 10
0.6 to 0.9
Nickel (Ni), % 5.5 to 7.5
0
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