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AISI 431 Stainless Steel vs. EN 1.4421 Stainless Steel

Both AISI 431 stainless steel and EN 1.4421 stainless steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 431 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
Elongation at Break, % 15 to 17
11 to 17
Fatigue Strength, MPa 430 to 610
380 to 520
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
880 to 1100
Tensile Strength: Yield (Proof), MPa 710 to 1040
620 to 950

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 400
410
Maximum Temperature: Mechanical, °C 850
870
Melting Completion (Liquidus), °C 1510
1440
Melting Onset (Solidus), °C 1450
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 26
16
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
12
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
2.6
Embodied Energy, MJ/kg 31
36
Embodied Water, L/kg 120
130

Common Calculations

PREN (Pitting Resistance) 16
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
120 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
960 to 2270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 50
31 to 39
Strength to Weight: Bending, points 27 to 36
26 to 30
Thermal Diffusivity, mm2/s 7.0
4.4
Thermal Shock Resistance, points 28 to 43
31 to 39

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.060
Chromium (Cr), % 15 to 17
15.5 to 17.5
Iron (Fe), % 78.2 to 83.8
74.4 to 80.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.7
Nickel (Ni), % 1.3 to 2.5
4.0 to 5.5
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

Comparable Variants