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AISI 431 Stainless Steel vs. EN 1.4378 Stainless Steel

Both AISI 431 stainless steel and EN 1.4378 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 1.4378 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
190 to 340
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 15 to 17
14 to 34
Fatigue Strength, MPa 430 to 610
340 to 550
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 550 to 840
510 to 680
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
760 to 1130
Tensile Strength: Yield (Proof), MPa 710 to 1040
430 to 970

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 400
410
Maximum Temperature: Mechanical, °C 850
910
Melting Completion (Liquidus), °C 1510
1390
Melting Onset (Solidus), °C 1450
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
12
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 2.2
2.7
Embodied Energy, MJ/kg 31
39
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 16
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
150 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
470 to 2370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 50
28 to 41
Strength to Weight: Bending, points 27 to 36
24 to 31
Thermal Shock Resistance, points 28 to 43
16 to 23

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.080
Chromium (Cr), % 15 to 17
17 to 19
Iron (Fe), % 78.2 to 83.8
61.2 to 69
Manganese (Mn), % 0 to 1.0
11.5 to 14.5
Nickel (Ni), % 1.3 to 2.5
2.3 to 3.7
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030