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S21800 Stainless Steel vs. EN 1.6771 Steel

Both S21800 stainless steel and EN 1.6771 steel are iron alloys. They have 68% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is EN 1.6771 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
280 to 350
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 40
8.0 to 8.7
Fatigue Strength, MPa 330
440 to 680
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 740
930 to 1180
Tensile Strength: Yield (Proof), MPa 390
740 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 900
440
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1310
1420
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 15
5.0
Density, g/cm3 7.5
7.9
Embodied Carbon, kg CO2/kg material 3.1
1.9
Embodied Energy, MJ/kg 45
25
Embodied Water, L/kg 150
58

Common Calculations

PREN (Pitting Resistance) 19
2.5
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
75 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 390
1460 to 3450
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 27
33 to 41
Strength to Weight: Bending, points 24
27 to 31
Thermal Shock Resistance, points 17
27 to 35

Alloy Composition

Carbon (C), % 0 to 0.1
0.27 to 0.33
Chromium (Cr), % 16 to 18
0.8 to 1.2
Iron (Fe), % 59.1 to 65.4
92.2 to 95
Manganese (Mn), % 7.0 to 9.0
0.6 to 1.0
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 8.0 to 9.0
3.0 to 4.0
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.060
0 to 0.030
Silicon (Si), % 3.5 to 4.5
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.020