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EN 1.4123 Stainless Steel vs. S21900 Stainless Steel

Both EN 1.4123 stainless steel and S21900 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 27 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 EN 1.4123 stainless steel and the bottom bar is S21900 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 250
220
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 720 to 810
710

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 840
980
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1410
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 23
14
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 10
15
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 4.2
3.0
Embodied Energy, MJ/kg 62
43
Embodied Water, L/kg 120
160

Common Calculations

PREN (Pitting Resistance) 24
25
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 29
26
Strength to Weight: Bending, points 23 to 25
23
Thermal Diffusivity, mm2/s 6.3
3.8
Thermal Shock Resistance, points 26 to 29
15

Alloy Composition

Carbon (C), % 0.35 to 0.5
0 to 0.080
Chromium (Cr), % 14 to 16.5
19 to 21.5
Iron (Fe), % 76.7 to 84.6
59.4 to 67.4
Manganese (Mn), % 0 to 1.0
8.0 to 10
Molybdenum (Mo), % 1.0 to 2.5
0
Nickel (Ni), % 0 to 0.5
5.5 to 7.5
Nitrogen (N), % 0.1 to 0.3
0.15 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0 to 1.5
0