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EN 1.8550 Steel vs. S21603 Stainless Steel

Both EN 1.8550 steel and S21603 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.8550 steel and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
200
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
45
Fatigue Strength, MPa 470
360
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
79
Shear Strength, MPa 600
490
Tensile Strength: Ultimate (UTS), MPa 1000
690
Tensile Strength: Yield (Proof), MPa 760
390

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 440
990
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
17
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.7
3.6
Embodied Energy, MJ/kg 23
50
Embodied Water, L/kg 67
160

Common Calculations

PREN (Pitting Resistance) 2.3
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
270
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
380
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 36
25
Strength to Weight: Bending, points 29
22
Thermal Shock Resistance, points 29
15

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.3 to 0.37
0 to 0.030
Chromium (Cr), % 1.5 to 1.8
17.5 to 22
Iron (Fe), % 94.4 to 96.3
57.6 to 67.8
Manganese (Mn), % 0.4 to 0.7
7.5 to 9.0
Molybdenum (Mo), % 0.15 to 0.25
2.0 to 3.0
Nickel (Ni), % 0.85 to 1.2
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 0.75
Sulfur (S), % 0 to 0.035
0 to 0.030