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AISI 431 Stainless Steel vs. EN 1.4557 Stainless Steel

Both AISI 431 stainless steel and EN 1.4557 stainless steel are iron alloys. They have 72% 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 AISI 431 stainless steel and the bottom bar is EN 1.4557 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 15 to 17
40
Fatigue Strength, MPa 430 to 610
260
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
560
Tensile Strength: Yield (Proof), MPa 710 to 1040
300

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 400
420
Maximum Temperature: Mechanical, °C 850
1090
Melting Completion (Liquidus), °C 1510
1460
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 26
15
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
29
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.2
5.6
Embodied Energy, MJ/kg 31
76
Embodied Water, L/kg 120
190

Common Calculations

PREN (Pitting Resistance) 16
45
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
190
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32 to 50
19
Strength to Weight: Bending, points 27 to 36
19
Thermal Diffusivity, mm2/s 7.0
4.0
Thermal Shock Resistance, points 28 to 43
12

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.020
Chromium (Cr), % 15 to 17
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 78.2 to 83.8
49.5 to 56.3
Manganese (Mn), % 0 to 1.0
0 to 1.2
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 1.3 to 2.5
17.5 to 19.5
Nitrogen (N), % 0
0.18 to 0.24
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010