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S21904 Stainless Steel vs. EN 1.6553 Steel

Both S21904 stainless steel and EN 1.6553 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 (4, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is EN 1.6553 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
210 to 240
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17 to 51
19 to 21
Fatigue Strength, MPa 380 to 550
330 to 460
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
710 to 800
Tensile Strength: Yield (Proof), MPa 390 to 910
470 to 670

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 980
420
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
39
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
8.6

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
130 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
600 to 1190
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 36
25 to 28
Strength to Weight: Bending, points 23 to 29
23 to 24
Thermal Diffusivity, mm2/s 3.8
10
Thermal Shock Resistance, points 15 to 21
21 to 23

Alloy Composition

Carbon (C), % 0 to 0.040
0.23 to 0.28
Chromium (Cr), % 19 to 21.5
0.4 to 0.8
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 59.5 to 67.4
95.6 to 98.2
Manganese (Mn), % 8.0 to 10
0.6 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.3
Nickel (Ni), % 5.5 to 7.5
0.4 to 0.8
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0
0 to 0.030

Comparable Variants