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EN 1.4123 Stainless Steel vs. EN 1.4421 Stainless Steel

Both EN 1.4123 stainless steel and EN 1.4421 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 26 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 EN 1.4421 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 720 to 810
880 to 1100

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 840
870
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 23
16
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
12
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 4.2
2.6
Embodied Energy, MJ/kg 62
36
Embodied Water, L/kg 120
130

Common Calculations

PREN (Pitting Resistance) 24
18
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 29
31 to 39
Strength to Weight: Bending, points 23 to 25
26 to 30
Thermal Diffusivity, mm2/s 6.3
4.4
Thermal Shock Resistance, points 26 to 29
31 to 39

Alloy Composition

Carbon (C), % 0.35 to 0.5
0 to 0.060
Chromium (Cr), % 14 to 16.5
15.5 to 17.5
Iron (Fe), % 76.7 to 84.6
74.4 to 80.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 1.0 to 2.5
0 to 0.7
Nickel (Ni), % 0 to 0.5
4.0 to 5.5
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.020
Vanadium (V), % 0 to 1.5
0

Comparable Variants