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EN 1.4423 Stainless Steel vs. S20431 Stainless Steel

Both EN 1.4423 stainless steel and S20431 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4423 stainless steel and the bottom bar is S20431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
46
Fatigue Strength, MPa 380
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 520
500
Tensile Strength: Ultimate (UTS), MPa 850
710
Tensile Strength: Yield (Proof), MPa 630
350

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 780
890
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 9.9
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 14
12
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 3.2
2.5
Embodied Energy, MJ/kg 43
36
Embodied Water, L/kg 120
140

Common Calculations

PREN (Pitting Resistance) 21
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
270
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
25
Strength to Weight: Bending, points 25
23
Thermal Diffusivity, mm2/s 4.3
4.0
Thermal Shock Resistance, points 31
15

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.12
Chromium (Cr), % 11 to 13
17 to 18
Copper (Cu), % 0.2 to 0.8
1.5 to 3.5
Iron (Fe), % 73.8 to 80.5
66.1 to 74.4
Manganese (Mn), % 0 to 2.0
5.0 to 7.0
Molybdenum (Mo), % 2.3 to 2.8
0
Nickel (Ni), % 6.0 to 7.0
2.0 to 4.0
Nitrogen (N), % 0 to 0.020
0.1 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.0030
0 to 0.030