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S21904 Stainless Steel vs. EN 1.8893 Steel

Both S21904 stainless steel and EN 1.8893 steel are iron alloys. They have 66% 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 1.8893 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
250
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17 to 51
16
Fatigue Strength, MPa 380 to 550
470
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 510 to 620
510
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
830
Tensile Strength: Yield (Proof), MPa 390 to 910
720

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 980
410
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
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.9
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.0
1.7
Embodied Energy, MJ/kg 43
23
Embodied Water, L/kg 160
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
130
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
1370
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 36
29
Strength to Weight: Bending, points 23 to 29
25
Thermal Diffusivity, mm2/s 3.8
11
Thermal Shock Resistance, points 15 to 21
24

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.060
Carbon (C), % 0 to 0.040
0 to 0.2
Chromium (Cr), % 19 to 21.5
0 to 0.3
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 59.5 to 67.4
95.6 to 98
Manganese (Mn), % 8.0 to 10
1.4 to 1.7
Molybdenum (Mo), % 0
0.3 to 0.45
Nickel (Ni), % 5.5 to 7.5
0.3 to 0.7
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0.15 to 0.4
0 to 0.020
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.12