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S21800 Stainless Steel vs. EN 1.4404 Stainless Steel

Both S21800 stainless steel and EN 1.4404 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is EN 1.4404 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
190 to 270
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 40
14 to 43
Fatigue Strength, MPa 330
220 to 320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
78
Shear Strength, MPa 510
420 to 550
Tensile Strength: Ultimate (UTS), MPa 740
600 to 900
Tensile Strength: Yield (Proof), MPa 390
240 to 570

Thermal Properties

Latent Heat of Fusion, J/g 340
290
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 900
950
Melting Completion (Liquidus), °C 1360
1440
Melting Onset (Solidus), °C 1310
1400
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 15
19
Density, g/cm3 7.5
7.9
Embodied Carbon, kg CO2/kg material 3.1
3.8
Embodied Energy, MJ/kg 45
52
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 19
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
110 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 390
140 to 800
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 27
21 to 32
Strength to Weight: Bending, points 24
20 to 26
Thermal Shock Resistance, points 17
13 to 20

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 16 to 18
16.5 to 18.5
Iron (Fe), % 59.1 to 65.4
62.8 to 71.5
Manganese (Mn), % 7.0 to 9.0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 8.0 to 9.0
10 to 13
Nitrogen (N), % 0.080 to 0.18
0 to 0.1
Phosphorus (P), % 0 to 0.060
0 to 0.045
Silicon (Si), % 3.5 to 4.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015