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S21800 Stainless Steel vs. EN 1.4020 Stainless Steel

Both S21800 stainless steel and EN 1.4020 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 (2, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is EN 1.4020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
190 to 340
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 40
13 to 34
Fatigue Strength, MPa 330
340 to 540
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 510
510 to 680
Tensile Strength: Ultimate (UTS), MPa 740
770 to 1130
Tensile Strength: Yield (Proof), MPa 390
430 to 950

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 900
890
Melting Completion (Liquidus), °C 1360
1390
Melting Onset (Solidus), °C 1310
1350
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 15
11
Density, g/cm3 7.5
7.6
Embodied Carbon, kg CO2/kg material 3.1
2.5
Embodied Energy, MJ/kg 45
37
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 19
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
140 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 390
460 to 2290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 27
28 to 41
Strength to Weight: Bending, points 24
25 to 32
Thermal Shock Resistance, points 17
16 to 23

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.15
Chromium (Cr), % 16 to 18
16.5 to 19
Iron (Fe), % 59.1 to 65.4
62.8 to 71.8
Manganese (Mn), % 7.0 to 9.0
11 to 14
Nickel (Ni), % 8.0 to 9.0
0.5 to 2.5
Nitrogen (N), % 0.080 to 0.18
0.2 to 0.45
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 0.030