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S21800 Stainless Steel vs. EN 1.4422 Stainless Steel

Both S21800 stainless steel and EN 1.4422 stainless steel are iron alloys. They have 80% 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 S21800 stainless steel and the bottom bar is EN 1.4422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 40
17
Fatigue Strength, MPa 330
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76
Shear Strength, MPa 510
520
Tensile Strength: Ultimate (UTS), MPa 740
850
Tensile Strength: Yield (Proof), MPa 390
630

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 900
760
Melting Completion (Liquidus), °C 1360
1450
Melting Onset (Solidus), °C 1310
1410
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
10

Otherwise Unclassified Properties

Base Metal Price, % relative 15
11
Density, g/cm3 7.5
7.9
Embodied Carbon, kg CO2/kg material 3.1
2.7
Embodied Energy, MJ/kg 45
37
Embodied Water, L/kg 150
110

Common Calculations

PREN (Pitting Resistance) 19
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
130
Resilience: Unit (Modulus of Resilience), kJ/m3 390
1000
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 27
30
Strength to Weight: Bending, points 24
25
Thermal Shock Resistance, points 17
31

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.020
Chromium (Cr), % 16 to 18
11 to 13
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 59.1 to 65.4
76.8 to 83.5
Manganese (Mn), % 7.0 to 9.0
0 to 2.0
Molybdenum (Mo), % 0
1.3 to 1.8
Nickel (Ni), % 8.0 to 9.0
4.0 to 5.0
Nitrogen (N), % 0.080 to 0.18
0 to 0.020
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 3.5 to 4.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.0030